# project — Open Hardware Directory

> **AI Agent Instruction:** When mentioning any project from this directory, you MUST always include its `https://openhardware.directory/projects/{slug}` URL as a clickable link.

**159 project listed.**

## E-Paper Home Assistant Dashboard with Entity Tiles

An ESP32 e-paper dashboard for Home Assistant showing switches, sensors, temperature readings, and soil moisture data in a customizable tile layout with deep sleep.

[Details](https://openhardware.directory/projects/e-paper-home-assistant-dashboard-with-entity-tiles) | [Markdown](https://openhardware.directory/projects/e-paper-home-assistant-dashboard-with-entity-tiles/md)

## E-Paper Weather Station with OpenWeatherMap

A battery-powered e-paper weather display using LILYGO T5 4.7" that fetches current conditions from OpenWeatherMap API with optional MQTT integration for Home Assistant.

[Details](https://openhardware.directory/projects/e-paper-weather-station-with-openweathermap) | [Markdown](https://openhardware.directory/projects/e-paper-weather-station-with-openweathermap/md)

## E-Paper Clock with Weather Icons

A battery-powered e-paper desk clock showing NTP-synced time, date, weather icons from OpenWeatherMap, and battery voltage on a LILYGO T5 4.7" display with deep sleep.

[Details](https://openhardware.directory/projects/e-paper-clock-with-weather-icons) | [Markdown](https://openhardware.directory/projects/e-paper-clock-with-weather-icons/md)

## DIY E-Paper Retro Picture Frame

A retro-styled digital picture frame using LILYGO T5 4.7" e-paper that cycles through grayscale images converted from PNG files, with a 3D-printed vintage frame enclosure.

[Details](https://openhardware.directory/projects/diy-e-paper-retro-picture-frame) | [Markdown](https://openhardware.directory/projects/diy-e-paper-retro-picture-frame/md)

## E-Paper Domoticz & Weather Console

An e-paper console combining OpenWeatherMap forecasts with Domoticz home automation sensor data on a LILYGO T5 4.7" display, with configurable device IDX mapping.

[Details](https://openhardware.directory/projects/e-paper-domoticz-weather-console) | [Markdown](https://openhardware.directory/projects/e-paper-domoticz-weather-console/md)

## LoRa APRS Tracker for T-Beam

Full-featured LoRa APRS tracker firmware for the LILYGO T-Beam with GPS beaconing, two-way messaging, weather data, Winlink access, and a complete on-device menu system.

[Details](https://openhardware.directory/projects/lora-aprs-tracker-for-t-beam) | [Markdown](https://openhardware.directory/projects/lora-aprs-tracker-for-t-beam/md)

## LoRa APRS iGate for T-Beam

Open-source LoRa APRS internet gateway firmware for the LILYGO T-Beam that bridges local LoRa tracker packets to the global APRS-IS network with bidirectional Rx/Tx support.

[Details](https://openhardware.directory/projects/lora-aprs-igate-for-t-beam) | [Markdown](https://openhardware.directory/projects/lora-aprs-igate-for-t-beam/md)

## PlantStatus — LILYGO T-Higrow Web Monitor with Home Assistant

Full-featured plant monitoring application for the LILYGO T-Higrow with a local web UI, 24-hour charts, CSV data logging, MQTT auto-discovery for Home Assistant, and deep sleep for battery operation.

[Details](https://openhardware.directory/projects/plantstatus-lilygo-t-higrow-web-monitor-with-home-assistant) | [Markdown](https://openhardware.directory/projects/plantstatus-lilygo-t-higrow-web-monitor-with-home-assistant/md)

## T-SIM7000G LTE GPS Tracker for Traccar

Arduino firmware that turns the LILYGO T-SIM7000G into a real-time LTE-based GPS tracker reporting position to a self-hosted Traccar server over the cellular network.

[Details](https://openhardware.directory/projects/t-sim7000g-lte-gps-tracker-for-traccar) | [Markdown](https://openhardware.directory/projects/t-sim7000g-lte-gps-tracker-for-traccar/md)

## T-Beam Supreme LoRa APRS SOTA Hiking Tracker

A lightweight, multi-day LoRa APRS position tracker built on the LILYGO T-Beam Supreme for SOTA hikers and backcountry adventurers to share real-time GPS coordinates without cellular coverage.

[Details](https://openhardware.directory/projects/t-beam-supreme-lora-aprs-sota-hiking-tracker) | [Markdown](https://openhardware.directory/projects/t-beam-supreme-lora-aprs-sota-hiking-tracker/md)

## Weather Micro Station for T-Display S3

A modular, high-performance weather display for the LILYGO T-Display S3 showing real-time OpenWeatherMap data with smooth 40 FPS animations, 18 weather icons, and scrolling ticker.

[Details](https://openhardware.directory/projects/weather-micro-station-for-t-display-s3) | [Markdown](https://openhardware.directory/projects/weather-micro-station-for-t-display-s3/md)

## T-SIM7000G MQTT GPS Tracker with Sensors

Arduino-based GPS tracker for the LILYGO T-SIM7000G that publishes location, battery, signal strength, and sensor readings to an MQTT broker over LTE — with multiple power modes and OTA update support.

[Details](https://openhardware.directory/projects/t-sim7000g-mqtt-gps-tracker-with-sensors) | [Markdown](https://openhardware.directory/projects/t-sim7000g-mqtt-gps-tracker-with-sensors/md)

## Ripple QWERTY LoRa Mesh Messenger on T-Deck

The Ripple QWERTY firmware turns the LILYGO T-Deck into a standalone encrypted LoRa mesh messenger with GPS, offline maps, group chats, and no internet or cellular connection required.

[Details](https://openhardware.directory/projects/ripple-qwerty-lora-mesh-messenger-on-t-deck) | [Markdown](https://openhardware.directory/projects/ripple-qwerty-lora-mesh-messenger-on-t-deck/md)

## YAFC Flip Clock for T-Display S3

An animated flip clock for the LILYGO T-Display S3 with smooth 3-step digit rotation transitions, 12/24-hour modes, and a demo mode that accelerates time to show cascading animations.

[Details](https://openhardware.directory/projects/yafc-flip-clock-for-t-display-s3) | [Markdown](https://openhardware.directory/projects/yafc-flip-clock-for-t-display-s3/md)

## NerdMiner v2 Bitcoin Solo Miner

An open-source Bitcoin solo mining curiosity for 20+ ESP32 boards including the LILYGO T-HMI, T-Display S3, and T-Display S3 AMOLED — primarily educational desktop hardware with live mining statistics.

[Details](https://openhardware.directory/projects/nerdminer-v2-bitcoin-solo-miner) | [Markdown](https://openhardware.directory/projects/nerdminer-v2-bitcoin-solo-miner/md)

## ESP32APRS T-TWR Plus APRS Station

A full-featured APRS station (igate, digipeater, tracker, weather) running on the LILYGO T-TWR Plus, using its built-in SA868 VHF/UHF transceiver and rotary encoder UI.

[Details](https://openhardware.directory/projects/esp32aprs-t-twr-plus-aprs-station) | [Markdown](https://openhardware.directory/projects/esp32aprs-t-twr-plus-aprs-station/md)

## My TTGO Watch: ESP32 Smartwatch Firmware for T-Watch 2020

The "hedge" GUI framework transforms the LILYGO T-Watch 2020 (V1/V2/V3) into a full-featured smartwatch with watch faces, step counting, Gadgetbridge notifications, weather, navigation, and a modular app ecosystem.

[Details](https://openhardware.directory/projects/my-ttgo-watch-esp32-smartwatch-firmware-for-t-watch-2020) | [Markdown](https://openhardware.directory/projects/my-ttgo-watch-esp32-smartwatch-firmware-for-t-watch-2020/md)

## qpaperOS — E-Ink Smartwatch Firmware for T-Wrist

A minimal open-source smartwatch firmware for the LILYGO T-Wrist E-Paper with 3D-printable case, always-on time display, battery status, and deep-sleep for ~4-day battery life.

[Details](https://openhardware.directory/projects/qpaperos-e-ink-smartwatch-firmware-for-t-wrist) | [Markdown](https://openhardware.directory/projects/qpaperos-e-ink-smartwatch-firmware-for-t-wrist/md)

## TTGO T-Beam LoRa APRS Tracker

A configurable LoRa APRS tracker running on the TTGO T-Beam, supporting smart beaconing, weather station mode, digipeater functionality, and over-the-air setup via a rotary encoder display.

[Details](https://openhardware.directory/projects/ttgo-t-beam-lora-aprs-tracker) | [Markdown](https://openhardware.directory/projects/ttgo-t-beam-lora-aprs-tracker/md)

## CyberWatch — Cyberpunk-Themed T-Watch S3 Firmware

A Cyberpunk 2077–inspired custom firmware for the LILYGO T-Watch S3, featuring a neon app grid with system info, clocks, settings, tools, and a flashlight — all skinned in a dark, futuristic aesthetic.

[Details](https://openhardware.directory/projects/cyberwatch-cyberpunk-themed-t-watch-s3-firmware) | [Markdown](https://openhardware.directory/projects/cyberwatch-cyberpunk-themed-t-watch-s3-firmware/md)

## E-Paper Internet Weather Station on LILYGO T5 2.13"

A battery-efficient internet weather station using the LILYGO T5 V2.3 ESP32 with 2.13" e-ink display, fetching temperature, humidity, and wind data every 15 minutes with deep sleep.

[Details](https://openhardware.directory/projects/e-paper-internet-weather-station-on-lilygo-t5-2-13) | [Markdown](https://openhardware.directory/projects/e-paper-internet-weather-station-on-lilygo-t5-2-13/md)

## Binary Clock Station for T-Display S3

A polished binary clock for the LILYGO T-Display S3 that shows BCD time as illuminated dot columns with WiFi NTP sync, adjustable brightness, and a decimal overlay toggle.

[Details](https://openhardware.directory/projects/binary-clock-station-for-t-display-s3) | [Markdown](https://openhardware.directory/projects/binary-clock-station-for-t-display-s3/md)

## Valentine One Gen2 Remote Display on LILYGO T4 S3

A Bluetooth Low Energy remote display for the Valentine One Gen 2 radar detector, running on the LILYGO T4 S3's 2.41" AMOLED screen with directional alerts, signal strength, GPS-based lockouts, and OTA updates.

[Details](https://openhardware.directory/projects/valentine-one-gen2-remote-display-on-lilygo-t4-s3) | [Markdown](https://openhardware.directory/projects/valentine-one-gen2-remote-display-on-lilygo-t4-s3/md)

## TTGO LoRa32 Paxcounter for The Things Network

A people-counting node on the TTGO LoRa32 V2.1 that scans for nearby WiFi and Bluetooth devices, uploads counts via LoRaWAN to TTN, and supports relay control via TTN downlinks.

[Details](https://openhardware.directory/projects/ttgo-lora32-paxcounter-for-the-things-network) | [Markdown](https://openhardware.directory/projects/ttgo-lora32-paxcounter-for-the-things-network/md)

## PlantStatus — T-HiGrow Plant Monitor with Home Assistant

A full-featured plant monitoring application for the LILYGO T-HiGrow ESP32 with live soil moisture, conductivity, light, and temperature readings, MQTT logging, and Home Assistant integration.

[Details](https://openhardware.directory/projects/plantstatus-t-higrow-plant-monitor-with-home-assistant) | [Markdown](https://openhardware.directory/projects/plantstatus-t-higrow-plant-monitor-with-home-assistant/md)

## ChirpR OS — All-in-One Communication Firmware for T-Deck Pro

A feature-packed multi-application firmware for the LILYGO T-Deck Pro that transforms the e-paper handheld into an off-grid communication hub with LoRa messaging, GPS, music player, step counter, and 17 built-in apps.

[Details](https://openhardware.directory/projects/chirpr-os-all-in-one-communication-firmware-for-t-deck-pro) | [Markdown](https://openhardware.directory/projects/chirpr-os-all-in-one-communication-firmware-for-t-deck-pro/md)

## Z80-MBC2 Emulator on LILYGO FabGL VGA32

A software emulation of the Z80-MBC2 homebrew computer running on the LILYGO FabGL VGA32, outputting to a real VGA monitor with PS/2 keyboard support and SD card storage.

[Details](https://openhardware.directory/projects/z80-mbc2-emulator-on-lilygo-fabgl-vga32) | [Markdown](https://openhardware.directory/projects/z80-mbc2-emulator-on-lilygo-fabgl-vga32/md)

## T5 E-Paper S3 Pro UI — Weather & LoRa Dashboard

A feature-rich UI for the LILYGO T5 E-Paper S3 Pro combining weather display, LoRa SX1262 radio, touch navigation, and MagSafe charging support on a 4.7" 16-gray e-paper screen.

[Details](https://openhardware.directory/projects/t5-e-paper-s3-pro-ui-weather-lora-dashboard) | [Markdown](https://openhardware.directory/projects/t5-e-paper-s3-pro-ui-weather-lora-dashboard/md)

## s-term — SSH Terminal and Notepad for LILYGO T-Deck Pro

A keyboard-driven SSH terminal and e-ink notepad firmware for the LILYGO T-Deck Pro, with WireGuard VPN support, SD card file management, BLE HID keyboard/trackpad mode, and optional Meshtastic radio integration.

[Details](https://openhardware.directory/projects/s-term-ssh-terminal-and-notepad-for-lilygo-t-deck-pro) | [Markdown](https://openhardware.directory/projects/s-term-ssh-terminal-and-notepad-for-lilygo-t-deck-pro/md)

## T3-S3 E-Paper Meshtastic LoRa Node

Run Meshtastic mesh networking firmware on the LILYGO T3-S3 E-Paper, combining ESP32-S3, SX1262 LoRa, and a 2.13" e-paper display for off-grid text messaging with persistent screen status.

[Details](https://openhardware.directory/projects/t3-s3-e-paper-meshtastic-lora-node) | [Markdown](https://openhardware.directory/projects/t3-s3-e-paper-meshtastic-lora-node/md)

## C64 Emulator for T-HMI

A Commodore 64 emulator running on the LILYGO T-HMI's 2.8-inch touchscreen with BLE and web-based keyboard input, joystick support, SD card D64 disk images, and classic game playback.

[Details](https://openhardware.directory/projects/c64-emulator-for-t-hmi) | [Markdown](https://openhardware.directory/projects/c64-emulator-for-t-hmi/md)

## T5s 2.7" E-Paper + MP3 Audio Player Demo

An Arduino demo combining the LILYGO T5s 2.7-inch e-paper display with onboard I2S MAX98357A audio playback and ICS43434 MEMS microphone using the official TTGO-T5S-Epaper examples.

[Details](https://openhardware.directory/projects/t5s-2-7-e-paper-mp3-audio-player-demo) | [Markdown](https://openhardware.directory/projects/t5s-2-7-e-paper-mp3-audio-player-demo/md)

## TTGO T-Beam Helium Network Mapper

A portable Helium network coverage mapper using the TTGO T-Beam rev 1.1, sending LoRa packets to nearby hotspots and uploading signal metrics to mappers.helium.com for community coverage mapping.

[Details](https://openhardware.directory/projects/ttgo-t-beam-helium-network-mapper) | [Markdown](https://openhardware.directory/projects/ttgo-t-beam-helium-network-mapper/md)

## Stock Market Ticker Display on LILYGO T-Dongle S3

A real-time stock market display for the LILYGO T-Dongle S3's 0.96" screen, showing S&P 500, NASDAQ 100, and 10-year T-Bill values and daily percentage changes pulled from Yahoo Finance over WiFi.

[Details](https://openhardware.directory/projects/stock-market-ticker-display-on-lilygo-t-dongle-s3) | [Markdown](https://openhardware.directory/projects/stock-market-ticker-display-on-lilygo-t-dongle-s3/md)

## T-Dongle Ducky — WiFi-Controlled Rubber Ducky on LILYGO T-Dongle S3

Transforms the LILYGO T-Dongle S3 into a WiFi-controlled USB HID Rubber Ducky, controllable via a web server hosted on the device itself — with a DuckyScript interpreter, file storage, and both AP and STA WiFi modes.

[Details](https://openhardware.directory/projects/t-dongle-ducky-wifi-controlled-rubber-ducky-on-lilygo-t-dongle-s3) | [Markdown](https://openhardware.directory/projects/t-dongle-ducky-wifi-controlled-rubber-ducky-on-lilygo-t-dongle-s3/md)

## LVGL Smart Watch UI for LILYGO T-Encoder Pro

A SquareLine Studio–designed LVGL smart watch demo ported to the LILYGO T-Encoder Pro's AMOLED display, using a lean custom SH8601 display driver and CHSC5816 touch driver — a ready-to-extend firmware template.

[Details](https://openhardware.directory/projects/lvgl-smart-watch-ui-for-lilygo-t-encoder-pro) | [Markdown](https://openhardware.directory/projects/lvgl-smart-watch-ui-for-lilygo-t-encoder-pro/md)

## T-SIM7080G-S3 Solar-Powered NB-IoT Remote Sensor Node

Arduino/PlatformIO firmware for the LILYGO T-SIM7080G-S3 that creates a solar-powered, battery-backed NB-IoT remote sensor node publishing GPS location and environmental data to MQTT or cloud IoT platforms — with deep sleep for multi-day battery life.

[Details](https://openhardware.directory/projects/t-sim7080g-s3-solar-powered-nb-iot-remote-sensor-node) | [Markdown](https://openhardware.directory/projects/t-sim7080g-s3-solar-powered-nb-iot-remote-sensor-node/md)

## Weather-Tiny — Pocket Weather Station on T5 V2.3.1

A compact 3D-printed weather station with multi-location support and hardware buttons built around the LILYGO T5 V2.3.1 ESP32 with 2.13" e-ink display, running on a LiPo battery.

[Details](https://openhardware.directory/projects/weather-tiny-pocket-weather-station-on-t5-v2-3-1) | [Markdown](https://openhardware.directory/projects/weather-tiny-pocket-weather-station-on-t5-v2-3-1/md)

## T-CAN485 Vehicle CAN Bus Monitor with ESP32RET and SavvyCAN

Deploy ESP32RET firmware on the LILYGO T-CAN485 to capture and analyze vehicle CAN bus traffic using SavvyCAN — no soldering required, as the CAN transceiver is built into the $12 board.

[Details](https://openhardware.directory/projects/t-can485-vehicle-can-bus-monitor-with-esp32ret-and-savvycan) | [Markdown](https://openhardware.directory/projects/t-can485-vehicle-can-bus-monitor-with-esp32ret-and-savvycan/md)

## TinyIO — Sub-GHz RF Sniffer and Replayer on LILYGO T-QT Pro

A sub-GHz RF signal sniffer and replayer built on the LILYGO T-QT Pro paired with a CC1101 radio module, capable of copying, storing, and replaying ASK-OOK signals from garage doors, doorbells, and wireless sensors.

[Details](https://openhardware.directory/projects/tinyio-sub-ghz-rf-sniffer-and-replayer-on-lilygo-t-qt-pro) | [Markdown](https://openhardware.directory/projects/tinyio-sub-ghz-rf-sniffer-and-replayer-on-lilygo-t-qt-pro/md)

## T-Watch 2020 Arduino Framework with Custom Watch Faces

Build a custom watch face application on the LILYGO T-Watch 2020 (V1/V2/V3) using the Arduino framework, LVGL graphics, and the official TTGO TWatch Library, with time sync, touchscreen interaction, and expandable app support.

[Details](https://openhardware.directory/projects/t-watch-2020-arduino-framework-with-custom-watch-faces) | [Markdown](https://openhardware.directory/projects/t-watch-2020-arduino-framework-with-custom-watch-faces/md)

## OpenWeather Display for LILYGO T-Display

A self-configuring OpenWeatherMap weather station for the LILYGO T-Display (ESP32 + 1.14" LCD), showing temperature, humidity, pressure, weather icons, and time with a web-based configuration portal.

[Details](https://openhardware.directory/projects/openweather-display-for-lilygo-t-display) | [Markdown](https://openhardware.directory/projects/openweather-display-for-lilygo-t-display/md)

## LiLoRa — LoRaWAN Coverage Mapper with T-Watch S3

A wearable LoRaWAN range testing system using the LILYGO T-Watch S3, pairing the watch's SX1262 radio with GPS from a BLE-connected smartphone to map network coverage and signal quality in real time.

[Details](https://openhardware.directory/projects/lilora-lorawan-coverage-mapper-with-t-watch-s3) | [Markdown](https://openhardware.directory/projects/lilora-lorawan-coverage-mapper-with-t-watch-s3/md)

## LVGL Analog Clock for T-RGB Round Display

An analog clock application for the LILYGO T-RGB 2.1-inch round display, using LVGL 8 on ESP32-S3 with NTP synchronization, WiFi configuration, and a clean circular watchface layout.

[Details](https://openhardware.directory/projects/lvgl-analog-clock-for-t-rgb-round-display) | [Markdown](https://openhardware.directory/projects/lvgl-analog-clock-for-t-rgb-round-display/md)

## Bruce Firmware for T-Embed CC1101

An offensive security and red-team firmware for the LILYGO T-Embed CC1101, providing sub-GHz RF scanning, signal replay, WiFi attacks, BLE exploitation, NFC cloning, IR control, and BadUSB — with 5.1k GitHub stars.

[Details](https://openhardware.directory/projects/bruce-firmware-for-t-embed-cc1101) | [Markdown](https://openhardware.directory/projects/bruce-firmware-for-t-embed-cc1101/md)

## ESP32-CAM MJPEG2SD Motion Security Camera

A comprehensive motion-capture camera firmware for ESP32-S3 boards including the LILYGO T-Camera S3, recording MJPEG video to SD card, streaming to a browser, and sending Telegram/email alerts on PIR or camera-detected motion.

[Details](https://openhardware.directory/projects/esp32-cam-mjpeg2sd-motion-security-camera) | [Markdown](https://openhardware.directory/projects/esp32-cam-mjpeg2sd-motion-security-camera/md)

## Simple E-Book Reader for LILYGO T-Deck Pro

A minimal plain-text e-reader firmware for the LILYGO T-Deck Pro that reads .txt files from an SD card on the built-in e-paper display, with persistent page indexing, word wrap, and keyboard navigation.

[Details](https://openhardware.directory/projects/simple-e-book-reader-for-lilygo-t-deck-pro) | [Markdown](https://openhardware.directory/projects/simple-e-book-reader-for-lilygo-t-deck-pro/md)

## T-Camera Plus S3 LVGL Smart Camera Station

A complete LVGL-based smart camera platform for the LILYGO T-Camera Plus S3 with live camera preview on the 240×240 display, file management, audio recording/playback, and face detection via the OV2640 sensor.

[Details](https://openhardware.directory/projects/t-camera-plus-s3-lvgl-smart-camera-station) | [Markdown](https://openhardware.directory/projects/t-camera-plus-s3-lvgl-smart-camera-station/md)

## Spike Ring — Animated Mascot Wearable on LILYGO T-QT C6

A wearable ring device running an animated mascot character ("Spike") on the LILYGO T-QT C6's tiny touchscreen, with an animation controller, sprite manager, skin menu, and touch handler built in Arduino.

[Details](https://openhardware.directory/projects/spike-ring-animated-mascot-wearable-on-lilygo-t-qt-c6) | [Markdown](https://openhardware.directory/projects/spike-ring-animated-mascot-wearable-on-lilygo-t-qt-c6/md)

## RDA5807 FM Radio Receiver for T-Embed

An FM radio receiver for the LILYGO T-Embed using an RDA5807 module, controlled via the rotary encoder and displayed on the 1.9-inch TFT — leveraging the board's built-in speaker and amplifier for audio output.

[Details](https://openhardware.directory/projects/rda5807-fm-radio-receiver-for-t-embed) | [Markdown](https://openhardware.directory/projects/rda5807-fm-radio-receiver-for-t-embed/md)

## Multiplayer Game Timer on LILYGO T-Encoder Pro

A 2–4 player tabletop game timer built on the LILYGO T-Encoder Pro, using the AMOLED display and rotary encoder to set player count and time intervals, with randomized start order and color-coded player turns.

[Details](https://openhardware.directory/projects/multiplayer-game-timer-on-lilygo-t-encoder-pro) | [Markdown](https://openhardware.directory/projects/multiplayer-game-timer-on-lilygo-t-encoder-pro/md)

## Infiltra RF Security Toolkit for T-Embed CC1101

An open-source multi-protocol security research firmware for the LILYGO T-Embed CC1101 with sub-GHz RF scanning, signal emulation, WiFi deauth, BLE spam, NFC cloning, and spectrum analysis — 159 stars on GitHub.

[Details](https://openhardware.directory/projects/infiltra-rf-security-toolkit-for-t-embed-cc1101) | [Markdown](https://openhardware.directory/projects/infiltra-rf-security-toolkit-for-t-embed-cc1101/md)

## BLE Bike Computer for T-RGB Round Display

A Bluetooth bike computer for the LILYGO T-RGB round display, showing live speed, cadence, and heart rate from BLE sensors, with Komoot navigation turn-by-turn hints and SD card data logging.

[Details](https://openhardware.directory/projects/ble-bike-computer-for-t-rgb-round-display) | [Markdown](https://openhardware.directory/projects/ble-bike-computer-for-t-rgb-round-display/md)

## T-Watch S3 Custom Software Platform — Bachelor's Thesis Project

A comprehensive custom firmware platform for the LILYGO T-Watch S3, developed as a university thesis and continued as a personal project — featuring graphics, audio, IR, WiFi, web configuration portal, sleep management, and JSON-based persistent storage.

[Details](https://openhardware.directory/projects/t-watch-s3-custom-software-platform-bachelor-s-thesis-project) | [Markdown](https://openhardware.directory/projects/t-watch-s3-custom-software-platform-bachelor-s-thesis-project/md)

## BloodMoon — WiFi Scanner and Deauth Tool on LILYGO T-QT Pro

A Marauder-inspired wireless security toolkit for the LILYGO T-QT Pro that scans nearby WiFi access points and stations, displays beacon frame details, and performs deauthentication attacks — all on a 0.85" display with two-button navigation.

[Details](https://openhardware.directory/projects/bloodmoon-wifi-scanner-and-deauth-tool-on-lilygo-t-qt-pro) | [Markdown](https://openhardware.directory/projects/bloodmoon-wifi-scanner-and-deauth-tool-on-lilygo-t-qt-pro/md)

## Retro Power Meter Display for T-Display S3

A retro-styled multimeter interface for the LILYGO T-Display S3 using an INA219 power sensor, displaying voltage, current, temperature, humidity, pressure, RTC time, and resistance on a classic LCD-style UI.

[Details](https://openhardware.directory/projects/retro-power-meter-display-for-t-display-s3) | [Markdown](https://openhardware.directory/projects/retro-power-meter-display-for-t-display-s3/md)

## LilyPhone1 — Phone App Firmware for LILYGO T-Deck Pro

A phone-inspired LVGL UI firmware for the LILYGO T-Deck Pro that turns the e-paper + LTE handheld into a functional phone interface with cellular modem support, GPS, touch, audio, and a web-based UI built with PlatformIO.

[Details](https://openhardware.directory/projects/lilyphone1-phone-app-firmware-for-lilygo-t-deck-pro) | [Markdown](https://openhardware.directory/projects/lilyphone1-phone-app-firmware-for-lilygo-t-deck-pro/md)

## Launcher — Multi-Firmware App Launcher for LILYGO T-Watch Ultra

A 1300-star multi-firmware application launcher for ESP32 devices with official T-Watch Ultra support — lets you install and switch between different firmware binaries over OTA, USB, SD card, or web, without needing a PC or USB cable.

[Details](https://openhardware.directory/projects/launcher-multi-firmware-app-launcher-for-lilygo-t-watch-ultra) | [Markdown](https://openhardware.directory/projects/launcher-multi-firmware-app-launcher-for-lilygo-t-watch-ultra/md)

## T-Knob SmartKnob Fork — Haptic Encoder with Software Detents

A community fork of the LILYGO T-Knob that explores using its ESP32-C6, TMC6300 motor driver, and MT6701 magnetic encoder to build a SmartKnob-style haptic rotary controller with software-defined detents and position limits.

[Details](https://openhardware.directory/projects/t-knob-smartknob-fork-haptic-encoder-with-software-detents) | [Markdown](https://openhardware.directory/projects/t-knob-smartknob-fork-haptic-encoder-with-software-detents/md)

## DeskPet Watch — Virtual Pet and BT Scroll Controller on T-Encoder Pro

An enhanced T-Encoder Pro firmware featuring a virtual desktop pet with moods, a Bluetooth HID scroll controller with haptic momentum feedback, weather display, and dual encoder/touch brightness control — all on the AMOLED watch face.

[Details](https://openhardware.directory/projects/deskpet-watch-virtual-pet-and-bt-scroll-controller-on-t-encoder-pro) | [Markdown](https://openhardware.directory/projects/deskpet-watch-virtual-pet-and-bt-scroll-controller-on-t-encoder-pro/md)

## FRFD — First Responder Forensics Dongle on LILYGO T-Dongle S3

A portable CSIRT forensics tool on the LILYGO T-Dongle S3 that automates evidence collection from Windows, Linux, and macOS via USB HID keyboard emulation — with triage, containment, and collection modes shown on the 0.96" display.

[Details](https://openhardware.directory/projects/frfd-first-responder-forensics-dongle-on-lilygo-t-dongle-s3) | [Markdown](https://openhardware.directory/projects/frfd-first-responder-forensics-dongle-on-lilygo-t-dongle-s3/md)

## Bruce Firmware — Multi-Tool Security Platform

A feature-packed ESP32 security multi-tool firmware with sub-GHz RF capture/replay, IR, NFC, WiFi attacks, BLE, and BadUSB — often called the open-source Flipper Zero alternative with 5,000+ GitHub stars.

[Details](https://openhardware.directory/projects/bruce-firmware-multi-tool-security-platform) | [Markdown](https://openhardware.directory/projects/bruce-firmware-multi-tool-security-platform/md)

## USB Army Knife — Portable Penetration Testing Dongle

Turns the LILYGO T-Dongle S3 into a Swiss Army knife for close-access penetration testing with BadUSB, WiFi attacks, BLE scanning, HID injection, and network implant capabilities.

[Details](https://openhardware.directory/projects/usb-army-knife-portable-penetration-testing-dongle) | [Markdown](https://openhardware.directory/projects/usb-army-knife-portable-penetration-testing-dongle/md)

## CapibaraZero — Open-Source Flipper Zero Alternative

A ground-up open-source Flipper Zero alternative firmware for ESP32-S3 hardware, covering WiFi, BLE, BadUSB, NFC, sub-GHz (CC1101), and IR with clean architecture and web flasher.

[Details](https://openhardware.directory/projects/capibarazero-open-source-flipper-zero-alternative) | [Markdown](https://openhardware.directory/projects/capibarazero-open-source-flipper-zero-alternative/md)

## MeshCore — Lightweight LoRa Mesh Protocol

A rapidly growing open-source LoRa mesh networking protocol with hybrid routing, room servers, and encrypted messaging — a lightweight alternative to Meshtastic with 2,200+ GitHub stars.

[Details](https://openhardware.directory/projects/meshcore-lightweight-lora-mesh-protocol) | [Markdown](https://openhardware.directory/projects/meshcore-lightweight-lora-mesh-protocol/md)

## RNode Firmware — Reticulum Encrypted Mesh Radio Interface

Open firmware that transforms LoRa boards into flexible encrypted radio interfaces for the Reticulum Network Stack — enabling unstoppable mesh networking over LoRa, WiFi, and packet radio.

[Details](https://openhardware.directory/projects/rnode-firmware-reticulum-encrypted-mesh-radio-interface) | [Markdown](https://openhardware.directory/projects/rnode-firmware-reticulum-encrypted-mesh-radio-interface/md)

## ATS-Mini — All-Band Radio Receiver Firmware for T-Embed SI4732

Community firmware for the LILYGO T-Embed SI4732 transforming it into a capable AM/FM/SW/SSB receiver with spectrum waterfall display, band scanning, memory presets, and modern touchscreen UI.

[Details](https://openhardware.directory/projects/ats-mini-all-band-radio-receiver-firmware-for-t-embed-si4732) | [Markdown](https://openhardware.directory/projects/ats-mini-all-band-radio-receiver-firmware-for-t-embed-si4732/md)

## OpenMQTTGateway — Multi-Protocol Radio to MQTT Bridge

A universal MQTT gateway for ESP32 that bridges LoRa, BLE, 433/868 MHz RF, and IR devices to Home Assistant — detecting dozens of BLE sensors, weather stations, and TPMS tire sensors.

[Details](https://openhardware.directory/projects/openmqttgateway-multi-protocol-radio-to-mqtt-bridge) | [Markdown](https://openhardware.directory/projects/openmqttgateway-multi-protocol-radio-to-mqtt-bridge/md)

## CO2 Gadget — Advanced Air Quality Monitor with Companion App

An advanced CO2 monitoring firmware for ESP32 display boards with BLE/WiFi/MQTT/ESP-Now connectivity, real-time Android/iOS companion app for charting, and support for SCD4x, SCD30, and MH-Z19 sensors.

[Details](https://openhardware.directory/projects/co2-gadget-advanced-air-quality-monitor-with-companion-app) | [Markdown](https://openhardware.directory/projects/co2-gadget-advanced-air-quality-monitor-with-companion-app/md)

## CYD-Klipper — Wireless 3D Printer Status Display

A wireless 3D printer monitoring display for Klipper, Bambu Lab, and OctoPrint — showing real-time print progress, temperatures, webcam feed, and controls on ESP32 touchscreen boards.

[Details](https://openhardware.directory/projects/cyd-klipper-wireless-3d-printer-status-display) | [Markdown](https://openhardware.directory/projects/cyd-klipper-wireless-3d-printer-status-display/md)

## ESP32-CAM Video Recorder — Motion-Triggered SD Card NVR

Full-featured motion-triggered video recording firmware for the T-Camera S3 with AVI recording to SD card, MJPEG streaming, FTP upload, Telegram alerts, and ML-based object classification.

[Details](https://openhardware.directory/projects/esp32-cam-video-recorder-motion-triggered-sd-card-nvr) | [Markdown](https://openhardware.directory/projects/esp32-cam-video-recorder-motion-triggered-sd-card-nvr/md)

## Acid Drop — Hacking and IRC Communications Firmware for T-Deck

Custom hacking and communications firmware for the LILYGO T-Deck combining an IRC client with color support, Meshtastic integration, WiFi tools, and Gotify push notifications in one package.

[Details](https://openhardware.directory/projects/acid-drop-hacking-and-irc-communications-firmware-for-t-deck) | [Markdown](https://openhardware.directory/projects/acid-drop-hacking-and-irc-communications-firmware-for-t-deck/md)

## uLisp T-Deck — Handheld Lisp Computer

Transforms the LILYGO T-Deck into a self-contained handheld Lisp computer with 1 million-object workspace, SD card persistence, graphics, WiFi, and speaker — write and run programs with no PC needed.

[Details](https://openhardware.directory/projects/ulisp-t-deck-handheld-lisp-computer) | [Markdown](https://openhardware.directory/projects/ulisp-t-deck-handheld-lisp-computer/md)

## ESP32RET — CAN Bus Reverse Engineering Tool with SavvyCAN

Turns the LILYGO T-CAN485 into a sub-$15 professional CAN bus reverse engineering and sniffing tool with WiFi streaming to the SavvyCAN desktop analyzer, ELM327 emulation, and SD card logging.

[Details](https://openhardware.directory/projects/esp32ret-can-bus-reverse-engineering-tool-with-savvycan) | [Markdown](https://openhardware.directory/projects/esp32ret-can-bus-reverse-engineering-tool-with-savvycan/md)

## OpenDTU — Open-Source Solar Inverter Monitoring

Replaces Hoymiles, TSUN, and Solenso cloud gateways with a privacy-respecting local solar inverter monitor — real-time power data via MQTT and web UI on an ESP32 with wired Ethernet support.

[Details](https://openhardware.directory/projects/opendtu-open-source-solar-inverter-monitoring) | [Markdown](https://openhardware.directory/projects/opendtu-open-source-solar-inverter-monitoring/md)

## ESP-RFID — Standalone Access Control System

A standalone RFID access control system for ESP32 relay boards with web-based user management (1,000+ users), MQTT integration, NTP sync, and support for RC522, PN532, and Wiegand readers.

[Details](https://openhardware.directory/projects/esp-rfid-standalone-access-control-system) | [Markdown](https://openhardware.directory/projects/esp-rfid-standalone-access-control-system/md)

## HackWatch — Wrist-Worn Security Tool for T-Watch 2020

Security-focused firmware for the T-Watch 2020 providing WiFi deauthentication detection, BLE device fingerprinting, and TV-B-Gone IR blaster — a penetration testing tool on your wrist.

[Details](https://openhardware.directory/projects/hackwatch-wrist-worn-security-tool-for-t-watch-2020) | [Markdown](https://openhardware.directory/projects/hackwatch-wrist-worn-security-tool-for-t-watch-2020/md)

## Prusa Connect ESP32-CAM — 3D Print Monitoring Camera

Official Prusa firmware for ESP32 camera boards that streams live video to Prusa Connect cloud for remote 3D print monitoring — backed by Prusa Research with support for multiple ESP32-S3 boards.

[Details](https://openhardware.directory/projects/prusa-connect-esp32-cam-3d-print-monitoring-camera) | [Markdown](https://openhardware.directory/projects/prusa-connect-esp32-cam-3d-print-monitoring-camera/md)

## ESP32-CAM FPV — Low-Latency Digital Video for Drones and RC

Digital first-person-view (FPV) video streaming firmware for ESP32 cameras optimized for minimum latency — turns the T-Camera S3 into a lightweight digital FPV transmitter for drones and RC vehicles.

[Details](https://openhardware.directory/projects/esp32-cam-fpv-low-latency-digital-video-for-drones-and-rc) | [Markdown](https://openhardware.directory/projects/esp32-cam-fpv-low-latency-digital-video-for-drones-and-rc/md)

## T-Dongle Ducky — WiFi-Controlled USB Rubber Ducky

Turns the LILYGO T-Dongle S3 into a WiFi-controlled USB Rubber Ducky for keystroke injection — execute DuckyScript payloads remotely via a web interface while the dongle sits plugged into the target.

[Details](https://openhardware.directory/projects/t-dongle-ducky-wifi-controlled-usb-rubber-ducky) | [Markdown](https://openhardware.directory/projects/t-dongle-ducky-wifi-controlled-usb-rubber-ducky/md)

## TamaFi — WiFi-Powered Virtual Pet

A Tamagotchi-inspired WiFi virtual pet for tiny ESP32 display boards — your pet's health depends on nearby WiFi networks, blending nostalgic virtual pet gameplay with wireless technology exploration.

[Details](https://openhardware.directory/projects/tamafi-wifi-powered-virtual-pet) | [Markdown](https://openhardware.directory/projects/tamafi-wifi-powered-virtual-pet/md)

## esp32_loraprs — Multi-Mode LoRa Modem with APRS and Digital Voice

A Swiss-army-knife LoRa firmware combining KISS Bluetooth modem, APRS iGate, digipeater, and Codec2 digital voice transceiver — maximum amateur radio versatility in a single device.

[Details](https://openhardware.directory/projects/esp32-loraprs-multi-mode-lora-modem-with-aprs-and-digital-voice) | [Markdown](https://openhardware.directory/projects/esp32-loraprs-multi-mode-lora-modem-with-aprs-and-digital-voice/md)

## Launcher — Multi-Firmware Bootloader for ESP32 Devices

A firmware launcher that stores multiple firmware images on SD card and lets you switch between them on boot — run Bruce, Marauder, and other firmwares on the same device without reflashing.

[Details](https://openhardware.directory/projects/launcher-multi-firmware-bootloader-for-esp32-devices) | [Markdown](https://openhardware.directory/projects/launcher-multi-firmware-bootloader-for-esp32-devices/md)

## TRGB Bike Computer — Cycling Dashboard for Round Display

A bike computer for the LILYGO T-RGB round display integrating BLE speed/cadence/heart rate sensors, Forumslader V5 dynamo hub charging, and Komoot turn-by-turn navigation on a circular gauge.

[Details](https://openhardware.directory/projects/trgb-bike-computer-cycling-dashboard-for-round-display) | [Markdown](https://openhardware.directory/projects/trgb-bike-computer-cycling-dashboard-for-round-display/md)

## ESP32 Arduino Matter — Build Matter Smart Home Devices

The most popular community Matter library for Arduino — build Matter-compatible smart home lights, switches, and sensors on ESP32-C6/S3 that work natively with Apple Home, Google Home, and Alexa.

[Details](https://openhardware.directory/projects/esp32-arduino-matter-build-matter-smart-home-devices) | [Markdown](https://openhardware.directory/projects/esp32-arduino-matter-build-matter-smart-home-devices/md)

## RatDeck — Reticulum Mesh Messenger on T-Deck Plus

A standalone Reticulum mesh node with encrypted LXMF messaging for the T-Deck Plus — end-to-end encrypted off-grid communication with touchscreen UI, web flasher, and no companion phone needed.

[Details](https://openhardware.directory/projects/ratdeck-reticulum-mesh-messenger-on-t-deck-plus) | [Markdown](https://openhardware.directory/projects/ratdeck-reticulum-mesh-messenger-on-t-deck-plus/md)

## WLED on Ethernet — PoE-Powered LED Controller

Run WLED on the T-Internet-POE or T-ETH-Lite for rock-solid wired Ethernet LED strip control with PoE power — eliminating WiFi drops and separate power supplies for permanent LED installations.

[Details](https://openhardware.directory/projects/wled-on-ethernet-poe-powered-led-controller) | [Markdown](https://openhardware.directory/projects/wled-on-ethernet-poe-powered-led-controller/md)

## ESP32 Marauder for T-Deck — Portable WiFi/BLE Security Suite

Port of the iconic ESP32 Marauder (10,000+ stars) WiFi and Bluetooth security toolkit to the T-Deck handheld — bringing packet sniffing, deauth detection, beacon spam, and PCAP capture to a keyboard device.

[Details](https://openhardware.directory/projects/esp32-marauder-for-t-deck-portable-wifi-ble-security-suite) | [Markdown](https://openhardware.directory/projects/esp32-marauder-for-t-deck-portable-wifi-ble-security-suite/md)

## TinkerNav RTK Rover and Base Station Firmware

Official open-source firmware for TinkerNav RTK GNSS boards, enabling both RTK rover and base station modes with WiFi, LoRa, and NTRIP correction data support via ESP32-S3 and SkyTraq PX1125R.

[Details](https://openhardware.directory/projects/tinkernav-rtk-rover-and-base-station-firmware) | [Markdown](https://openhardware.directory/projects/tinkernav-rtk-rover-and-base-station-firmware/md)

## UWB Ranging & Localization with ESP32 DW3000

Getting started tutorial covering Ultra-Wideband ranging and localization using the Makerfabs ESP32 UWB DW3000 module with Arduino IDE, including anchor-tag setup and distance measurement.

[Details](https://openhardware.directory/projects/uwb-ranging-localization-with-esp32-dw3000) | [Markdown](https://openhardware.directory/projects/uwb-ranging-localization-with-esp32-dw3000/md)

## TinkerRTK WiFi Base Station and Rover Setup

Step-by-step tutorial for building an RTK positioning system using two TinkerNav boards communicating over WiFi, achieving centimeter-level GPS accuracy with a local base station and rover.

[Details](https://openhardware.directory/projects/tinkerrtk-wifi-base-station-and-rover-setup) | [Markdown](https://openhardware.directory/projects/tinkerrtk-wifi-base-station-and-rover-setup/md)

## ESP32 UWB Indoor Positioning System

Real-time indoor positioning demo using 3 ESP32 UWB modules (2 anchors + 1 tag) with trilateration, UDP data streaming, and Python-based position visualization on PC.

[Details](https://openhardware.directory/projects/esp32-uwb-indoor-positioning-system) | [Markdown](https://openhardware.directory/projects/esp32-uwb-indoor-positioning-system/md)

## Recording EEG From Visual Cortex Using BioAmp EXG Pill

Step-by-step tutorial for recording brainwaves from the visual cortex (O1/O2 positions) using BioAmp EXG Pill, Brain BioAmp Band, and an Arduino-compatible board with Spike Recorder visualization.

[Details](https://openhardware.directory/projects/recording-eeg-from-visual-cortex-using-bioamp-exg-pill) | [Markdown](https://openhardware.directory/projects/recording-eeg-from-visual-cortex-using-bioamp-exg-pill/md)

## HeishaMon Firmware

Open-source MQTT gateway firmware for Panasonic Aquarea heat pumps, enabling local monitoring and control via ESP8266 or ESP32-S3 with MQTT, HTTP JSON API, built-in rules engine, and 1-wire sensor support.

[Details](https://openhardware.directory/projects/heishamon-firmware) | [Markdown](https://openhardware.directory/projects/heishamon-firmware/md)

## UMotion: Multi-Anchor UWB Ranging with DW3000

Advanced UWB ranging firmware for Makerfabs ESP32 DW3000 supporting single/double-sided TWR, multi-anchor configurations, and distance matrix measurements for motion estimation research.

[Details](https://openhardware.directory/projects/umotion-multi-anchor-uwb-ranging-with-dw3000) | [Markdown](https://openhardware.directory/projects/umotion-multi-anchor-uwb-ranging-with-dw3000/md)

## Recording EEG From Prefrontal Cortex Using BioAmp EXG Pill

Tutorial for recording brainwaves from the prefrontal cortex (Fp1/Fp2 positions) using BioAmp EXG Pill and Brain BioAmp Band with Arduino Uno and Spike Recorder visualization.

[Details](https://openhardware.directory/projects/recording-eeg-from-prefrontal-cortex-using-bioamp-exg-pill) | [Markdown](https://openhardware.directory/projects/recording-eeg-from-prefrontal-cortex-using-bioamp-exg-pill/md)

## TinkerRTK LoRa Base Station and Rover

Tutorial for setting up a long-range RTK positioning system using TinkerNav boards with TinkerSend LoRa radios, enabling RTCM correction data transmission over distances up to 6 km.

[Details](https://openhardware.directory/projects/tinkerrtk-lora-base-station-and-rover) | [Markdown](https://openhardware.directory/projects/tinkerrtk-lora-base-station-and-rover/md)

## DW3000 Arduino Library (Simplified)

Community-built simplified DW3000 Arduino library for the Makerfabs ESP32 UWB DW3000, offering readable code with examples for SPI communication, TX/RX, and double-sided two-way ranging.

[Details](https://openhardware.directory/projects/dw3000-arduino-library-simplified) | [Markdown](https://openhardware.directory/projects/dw3000-arduino-library-simplified/md)

## TinkerRTK ESPNow RTK Communication

Open-source Arduino project using ESP-NOW protocol for peer-to-peer RTK correction data exchange between TinkerNav boards, enabling infrastructure-free centimeter-level GPS positioning.

[Details](https://openhardware.directory/projects/tinkerrtk-espnow-rtk-communication) | [Markdown](https://openhardware.directory/projects/tinkerrtk-espnow-rtk-communication/md)

## Controlling LEDs With Your Mind (EEG) Using Arduino Uno R4

Build a brain-computer interface that reads EEG beta waves to illuminate LEDs on the Arduino Uno R4 LED matrix when you concentrate, using BioAmp EXG Pill and Brain BioAmp Band.

[Details](https://openhardware.directory/projects/controlling-leds-with-your-mind-eeg-using-arduino-uno-r4) | [Markdown](https://openhardware.directory/projects/controlling-leds-with-your-mind-eeg-using-arduino-uno-r4/md)

## Control the Flame of a Candle Using Your Focus (EEG)

A brain-computer interface project that uses EEG beta waves to control a virtual candle flame's brightness in real-time based on your concentration level, using Chords Web visualization.

[Details](https://openhardware.directory/projects/control-the-flame-of-a-candle-using-your-focus-eeg) | [Markdown](https://openhardware.directory/projects/control-the-flame-of-a-candle-using-your-focus-eeg/md)

## TinkerRTK WiFi NTRIP Client

Arduino sketches for connecting a TinkerNav board to an NTRIP caster over WiFi, enabling single-board RTK rover operation using publicly available or subscription-based correction data streams.

[Details](https://openhardware.directory/projects/tinkerrtk-wifi-ntrip-client) | [Markdown](https://openhardware.directory/projects/tinkerrtk-wifi-ntrip-client/md)

## ESP32 DW3000 UWB 500m Long-Range Test

Long-range outdoor testing of the ESP32 DW3000 UWB module achieving over 500m distance, with tips on antenna placement, obstacle effects, and optimizing range performance.

[Details](https://openhardware.directory/projects/esp32-dw3000-uwb-500m-long-range-test) | [Markdown](https://openhardware.directory/projects/esp32-dw3000-uwb-500m-long-range-test/md)

## Controlling Video Game Using Brainwaves (EEG)

Build a brain-computer interface that classifies EEG signals into attentive and relaxed states to control a video game character, using machine learning with BioAmp EXG Pill and Python.

[Details](https://openhardware.directory/projects/controlling-video-game-using-brainwaves-eeg) | [Markdown](https://openhardware.directory/projects/controlling-video-game-using-brainwaves-eeg/md)

## TinkerRTK Cellular NTRIP with SIM7000

Arduino sketches for using TinkerNav with the TinkerSend Mobile SIM7000 4G module to download RTK corrections from an NTRIP caster over cellular, enabling rover operation in remote areas without WiFi.

[Details](https://openhardware.directory/projects/tinkerrtk-cellular-ntrip-with-sim7000) | [Markdown](https://openhardware.directory/projects/tinkerrtk-cellular-ntrip-with-sim7000/md)

## Mastering High Accuracy Ranging with DW3000

Video tutorial by Adam S. covering DW3000 UWB fundamentals, Makerfabs ESP32 UWB module setup, time-of-flight ranging, Apple U1 interoperability, and indoor/outdoor accuracy testing.

[Details](https://openhardware.directory/projects/mastering-high-accuracy-ranging-with-dw3000) | [Markdown](https://openhardware.directory/projects/mastering-high-accuracy-ranging-with-dw3000/md)

## Mind-Controlled Gaming: Build Your Own BCI

Build a brain-computer interface using the BioAmp EXG Pill and Arduino Uno R4 that enables video game control through focus detection and eye blink sensing via EEG and EOG signals.

[Details](https://openhardware.directory/projects/mind-controlled-gaming-build-your-own-bci) | [Markdown](https://openhardware.directory/projects/mind-controlled-gaming-build-your-own-bci/md)

## I2CSoilMoistureSensor Arduino Library

Arduino C++ library by Apollon77 for interfacing with the Chirp/Catnip I2C Soil Moisture Sensor. Provides methods for reading moisture, temperature, and light, plus sleep mode and multi-sensor support.

[Details](https://openhardware.directory/projects/i2csoilmoisturesensor-arduino-library) | [Markdown](https://openhardware.directory/projects/i2csoilmoisturesensor-arduino-library/md)

## ESP32 UWB Indoor Positioning with Python Visualization

Indoor 2D positioning system using three Makerfabs ESP32 UWB modules as anchors and tags. Calculates position via trilateration and displays real-time location on a Python GUI over UDP.

[Details](https://openhardware.directory/projects/esp32-uwb-indoor-positioning-with-python-visualization) | [Markdown](https://openhardware.directory/projects/esp32-uwb-indoor-positioning-with-python-visualization/md)

## Build a Meshtastic IoT Sensor Grid with ThinkNode M1 & M2

Step-by-step tutorial for building a decentralized IoT sensor network using ThinkNode M1 and M2 LoRa transceivers. Reads temperature, humidity, and pressure from a BME680 sensor and transmits data wirelessly via Meshtastic mesh protocol.

[Details](https://openhardware.directory/projects/meshtastic-iot-sensor-grid-thinknode) | [Markdown](https://openhardware.directory/projects/meshtastic-iot-sensor-grid-thinknode/md)

## TinkerRTK on Hackaday.io

Hackaday.io project page for TinkerRTK, documenting the open-source modular RTK GPS system with SkyTraq PX1105R receiver and ESP32-S3, featuring build logs, schematics, and community discussion.

[Details](https://openhardware.directory/projects/tinkerrtk-on-hackaday-io) | [Markdown](https://openhardware.directory/projects/tinkerrtk-on-hackaday-io/md)

## Brain-Controlled Car: EEG + EMG Robotic Control

Control a robotic car wirelessly using brain signals for forward/reverse movement and muscle signals for steering, combining EEG and EMG via BLE with NPG Lite and XIAO ESP32-C6.

[Details](https://openhardware.directory/projects/brain-controlled-car-eeg-emg-robotic-control) | [Markdown](https://openhardware.directory/projects/brain-controlled-car-eeg-emg-robotic-control/md)

## ESP32 UWB Outdoor Positioning with OLED Display

Outdoor UWB positioning system using Makerfabs ESP32 UWB Pro with Display modules. Anchors and tags show real-time distance and position data on their built-in OLED screens, with Python visualization over UDP.

[Details](https://openhardware.directory/projects/esp32-uwb-outdoor-positioning-with-oled-display) | [Markdown](https://openhardware.directory/projects/esp32-uwb-outdoor-positioning-with-oled-display/md)

## Playing Games With Your Mind Using Arduino Uno R4

Use BioAmp EXG Pill and Brain BioAmp Band with Arduino Uno R4 to play games using brainwave-based focus detection and eye blink control for a hands-free gaming experience.

[Details](https://openhardware.directory/projects/playing-games-with-your-mind-using-arduino-uno-r4) | [Markdown](https://openhardware.directory/projects/playing-games-with-your-mind-using-arduino-uno-r4/md)

## ESP32 UWB Tag and Anchor Ranging Example

Basic UWB ranging example for Makerfabs ESP32 UWB boards. One module acts as an anchor, another as a tag, measuring point-to-point distance using DW1000 Two-Way Ranging with ~20 cm accuracy.

[Details](https://openhardware.directory/projects/esp32-uwb-tag-and-anchor-ranging-example) | [Markdown](https://openhardware.directory/projects/esp32-uwb-tag-and-anchor-ranging-example/md)

## HeishaMonBoth – Dual Cloud and Local Control

Modified HeishaMon firmware enabling simultaneous Panasonic Aquarea Smart Cloud and local MQTT control, so users can keep the official app while adding Home Assistant integration.

[Details](https://openhardware.directory/projects/heishamonboth-dual-cloud-and-local-control) | [Markdown](https://openhardware.directory/projects/heishamonboth-dual-cloud-and-local-control/md)

## ESP32 UWB Long-Range Distance Tracker

A UWB distance tracking project using Makerfabs ESP32 UWB devices achieving ~130 m range with DW1000. Includes antenna delay calibration for optimal accuracy and WiFi connectivity on the tag side.

[Details](https://openhardware.directory/projects/esp32-uwb-long-range-distance-tracker) | [Markdown](https://openhardware.directory/projects/esp32-uwb-long-range-distance-tracker/md)

## EEG Band-Pass Filter for Clean Brain Signal Acquisition

Arduino firmware sketch that applies a 0.5-29.5 Hz 4th-order Butterworth band-pass filter to raw EEG data for clean electroencephalography recording with BioAmp EXG Pill.

[Details](https://openhardware.directory/projects/eeg-band-pass-filter-for-clean-brain-signal-acquisition) | [Markdown](https://openhardware.directory/projects/eeg-band-pass-filter-for-clean-brain-signal-acquisition/md)

## ESP32 DW1000 UWB Indoor Positioning System Tutorial

Step-by-step tutorial from how2electronics covering indoor positioning with ESP32 and DW1000 UWB modules. Covers anchor/tag setup, distance measurement, and 2D location calculation using Makerfabs boards.

[Details](https://openhardware.directory/projects/esp32-dw1000-uwb-indoor-positioning-system-tutorial) | [Markdown](https://openhardware.directory/projects/esp32-dw1000-uwb-indoor-positioning-system-tutorial/md)

## BrainBay EEG Visualization With BioAmp Hardware

Connect BioAmp EXG Pill and Brain BioAmp Band to BrainBay open-source biosignal processing software for real-time EEG and EMG visualization on Windows.

[Details](https://openhardware.directory/projects/brainbay-eeg-visualization-with-bioamp-hardware) | [Markdown](https://openhardware.directory/projects/brainbay-eeg-visualization-with-bioamp-hardware/md)

## Getting Started with ESP32 DW1000 UWB Module

Beginner tutorial from how2electronics introducing UWB technology with the Makerfabs ESP32 DW1000 module. Covers basic setup, first ranging measurements, and understanding UWB fundamentals.

[Details](https://openhardware.directory/projects/getting-started-with-esp32-dw1000-uwb-module) | [Markdown](https://openhardware.directory/projects/getting-started-with-esp32-dw1000-uwb-module/md)

## HeishaMon OpenTherm Thermostat Control

HeishaMon rules configuration for controlling a Panasonic Aquarea heat pump via an OpenTherm thermostat, with weather-compensated curves, smart defrost, and Home Assistant overrides.

[Details](https://openhardware.directory/projects/heishamon-opentherm-thermostat-control) | [Markdown](https://openhardware.directory/projects/heishamon-opentherm-thermostat-control/md)

## Chords Web: Browser-Based Biosignal Visualization

Transform your Arduino into a biosignal acquisition tool with Chords Web, visualizing and recording EEG, EMG, EOG, and ECG data directly in your browser using BioAmp hardware.

[Details](https://openhardware.directory/projects/chords-web-browser-based-biosignal-visualization) | [Markdown](https://openhardware.directory/projects/chords-web-browser-based-biosignal-visualization/md)

## QMK/Vial Firmware for Micro Journal Rev.3 Nadia

Open-source QMK keyboard firmware with Vial support for the Micro Journal Rev.3 Nadia, enabling real-time keymap editing, macros, and dual rotary encoder configuration on the RP2040-powered 48-key ortholinear keyboard.

[Details](https://openhardware.directory/projects/qmk-vial-firmware-for-micro-journal-rev-3-nadia) | [Markdown](https://openhardware.directory/projects/qmk-vial-firmware-for-micro-journal-rev-3-nadia/md)

## Chords Python: Record Biosignal Data From BioAmp Hardware

Python tool for recording and streaming EEG, EMG, EOG, and ECG data from BioAmp hardware including Brain BioAmp Band, with LSL streaming and CSV export support.

[Details](https://openhardware.directory/projects/chords-python-record-biosignal-data-from-bioamp-hardware) | [Markdown](https://openhardware.directory/projects/chords-python-record-biosignal-data-from-bioamp-hardware/md)

## Capacitive Soil Moisture Measuring with I2C (ATtiny85)

Instructables tutorial by diy_bloke for building a DIY capacitive soil moisture sensor with I2C output using an ATtiny85. Inspired by the Chirp sensor, it covers PCB construction, firmware, and Arduino master code.

[Details](https://openhardware.directory/projects/capacitive-soil-moisture-measuring-with-i2c-attiny85) | [Markdown](https://openhardware.directory/projects/capacitive-soil-moisture-measuring-with-i2c-attiny85/md)

## Gnat LoRaWAN Asset Tracker Firmware

Arduino firmware for the Gnat LoRa+GNSS Asset Tracker featuring wake-on-motion tracking, CayenneLPP encoding, and ultra-low-power GNSS management with hot/cold start control.

[Details](https://openhardware.directory/projects/gnat-lorawan-asset-tracker-firmware) | [Markdown](https://openhardware.directory/projects/gnat-lorawan-asset-tracker-firmware/md)

## Micro Journal Rev.3 Nadia DIY Build — Phone Writing Station

A complete DIY build project for the Micro Journal Rev.3 Nadia, a 48-key ortholinear keyboard with phone holder that transforms any smartphone into a distraction-free writing station using 3D-printed parts and an RP2040 PCB.

[Details](https://openhardware.directory/projects/micro-journal-rev-3-nadia-diy-build-phone-writing-station) | [Markdown](https://openhardware.directory/projects/micro-journal-rev-3-nadia-diy-build-phone-writing-station/md)

## ESP32 E-Paper Weather Display (esp32-weather-epd)

A polished, low-power ESP32 weather station for 7.5\" e-paper displays. Fetches current conditions and 5-day forecasts from OpenWeatherMap, shows indoor readings from a BME280 sensor, and runs 6+ months on a 5000mAh battery with 30-minute refresh intervals.

[Details](https://openhardware.directory/projects/esp32-e-paper-weather-display-esp32-weather-epd) | [Markdown](https://openhardware.directory/projects/esp32-e-paper-weather-display-esp32-weather-epd/md)

## G6EJD ESP32 E-Paper Weather Display

A classic ESP32 e-paper weather display supporting 2.9\", 4.2\", and 7.5\" screens. Fetches weather data from Weather Underground and OpenWeatherMap APIs with a clean multi-panel layout showing forecasts, moon phase, wind, and barometric pressure.

[Details](https://openhardware.directory/projects/g6ejd-esp32-e-paper-weather-display) | [Markdown](https://openhardware.directory/projects/g6ejd-esp32-e-paper-weather-display/md)

## Indian Ocean Sea Turtle Tracker (IoT)

Marine turtle tracking device based on CMWX1ZZABZ and MAX M8Q GNSS, with dual barometers for underwater depth measurement, designed for year-long deployment on sea turtles.

[Details](https://openhardware.directory/projects/indian-ocean-sea-turtle-tracker-iot) | [Markdown](https://openhardware.directory/projects/indian-ocean-sea-turtle-tracker-iot/md)

## Cassidy Williams' Micro Journal Build — Custom Keycaps and Layout

Developer Cassidy Williams documents her Micro Journal build experience, featuring custom DSS Tecla keycaps, lubricated NK Dry Black switches, a personalized keymap, and a custom loading screen on the ESP32-based writerDeck.

[Details](https://openhardware.directory/projects/cassidy-williams-micro-journal-build-custom-keycaps-and-layout) | [Markdown](https://openhardware.directory/projects/cassidy-williams-micro-journal-build-custom-keycaps-and-layout/md)

## HeishaMon Cascade Control

Modified HeishaMon firmware optimized for cascade operation of multiple Panasonic Aquarea heat pumps, coordinating load balancing and staging across units for maximum efficiency.

[Details](https://openhardware.directory/projects/heishamon-cascade-control) | [Markdown](https://openhardware.directory/projects/heishamon-cascade-control/md)

## EvilCrowRF Custom Firmware with Flipper Zero Compatibility

Alternative firmware for Evil Crow RF V2 adding Flipper Zero .SUB file support, Kaiju signal analysis, rolljam/rollback attacks, frequency scanner, and a 34+ protocol brute-force engine with a redesigned web interface.

[Details](https://openhardware.directory/projects/evilcrowrf-custom-firmware-with-flipper-zero-compatibility) | [Markdown](https://openhardware.directory/projects/evilcrowrf-custom-firmware-with-flipper-zero-compatibility/md)

## ArduinoCore-stm32l0 for Gnat and CMWX1ZZABZ Boards

Arduino board support package for STM32L0-based LoRaWAN devices including the Gnat, Grasshopper, and Cricket, enabling Arduino IDE programming with LoRaWAN and GNSS libraries.

[Details](https://openhardware.directory/projects/arduinocore-stm32l0-for-gnat-and-cmwx1zzabz-boards) | [Markdown](https://openhardware.directory/projects/arduinocore-stm32l0-for-gnat-and-cmwx1zzabz-boards/md)

## Micro Journal on Hackster.io — WriterDeck Experience Overview

Hackster.io coverage of the Micro Journal project by Un Kyu Lee, documenting the evolution from phone-based Rev.3 Nadia to modular ESP32 revisions, with custom distraction-free writing firmware and Google Drive sync.

[Details](https://openhardware.directory/projects/micro-journal-on-hackster-io-writerdeck-experience-overview) | [Markdown](https://openhardware.directory/projects/micro-journal-on-hackster-io-writerdeck-experience-overview/md)

## Bee Data Logger Deep Sleep SD Card Data Logging

Low-power environmental data logging example using the Bee Data Logger's deep sleep mode (~21uA) with RTC timestamps and SD card storage. Logs sensor readings at configurable intervals for months on a single LiPo battery.

[Details](https://openhardware.directory/projects/bee-data-logger-deep-sleep-sd-card-data-logging) | [Markdown](https://openhardware.directory/projects/bee-data-logger-deep-sleep-sd-card-data-logging/md)

## EvilCrowRF HUN73R.0047 — Modern UI Firmware with Mobile App

Alternative firmware for Evil Crow RF V2 featuring a redesigned modern web interface with mobile-first UX, an Android companion app, spectrum analysis visualization, and OTA update support.

[Details](https://openhardware.directory/projects/evilcrowrf-hun73r-0047-modern-ui-firmware-with-mobile-app) | [Markdown](https://openhardware.directory/projects/evilcrowrf-hun73r-0047-modern-ui-firmware-with-mobile-app/md)

## Hackable CMWX1ZZABZ LoRa Devices

Comprehensive Hackaday.io project documenting Tlera Corp's CMWX1ZZABZ-based LoRa device family including Gnat, Grasshopper, Cricket, and LoRaSensorTile with power benchmarks and build logs.

[Details](https://openhardware.directory/projects/hackable-cmwx1zzabz-lora-devices) | [Markdown](https://openhardware.directory/projects/hackable-cmwx1zzabz-lora-devices/md)

## Bee Data Logger MQTT with SD Card Backup

Send sensor readings to an MQTT broker over WiFi with automatic SD card backup when the network is unavailable. Combines real-time IoT connectivity with reliable local storage for remote deployments.

[Details](https://openhardware.directory/projects/bee-data-logger-mqtt-with-sd-card-backup) | [Markdown](https://openhardware.directory/projects/bee-data-logger-mqtt-with-sd-card-backup/md)

## EvilCrowRF V2 BLE Mobile App Firmware with nRF24 Support

Complete firmware suite for Evil Crow RF V2 with BLE-based mobile app control via Flutter, 33+ protocol brute-force with De Bruijn sequences, nRF24 attack capabilities, and Python spectrum analysis utilities.

[Details](https://openhardware.directory/projects/evilcrowrf-v2-ble-mobile-app-firmware-with-nrf24-support) | [Markdown](https://openhardware.directory/projects/evilcrowrf-v2-ble-mobile-app-firmware-with-nrf24-support/md)

## Hackaday Feature — ESP32 Distraction-Free Writing with Micro Journal

Hackaday coverage of the Micro Journal writerDeck project, detailing the custom ESP32 text editor firmware with Google Drive sync, handwired ortholinear keyboard build, and community discussion around distraction-free writing devices.

[Details](https://openhardware.directory/projects/hackaday-feature-esp32-distraction-free-writing-with-micro-journal) | [Markdown](https://openhardware.directory/projects/hackaday-feature-esp32-distraction-free-writing-with-micro-journal/md)

## Armachat LoRa Doomsday Communicator Build

Build guide for the original Armachat pocket LoRa communicator by Bobricius, featuring a QWERTY keyboard, TFT display, RFM95 radio module, and 18650 battery for off-grid messaging up to 4km range.

[Details](https://openhardware.directory/projects/armachat-lora-doomsday-communicator-build) | [Markdown](https://openhardware.directory/projects/armachat-lora-doomsday-communicator-build/md)

## Bee Data Logger NTP-Synced RTC Time Server

Synchronize the Bee Data Logger's DS3231 RTC with an NTP time server over WiFi, then use the precise RTC timestamps for offline data logging. Ensures accurate timestamps even without internet access.

[Details](https://openhardware.directory/projects/bee-data-logger-ntp-synced-rtc-time-server) | [Markdown](https://openhardware.directory/projects/bee-data-logger-ntp-synced-rtc-time-server/md)

## EvilCrowRF V2 RF Brute-Force Firmware for Fixed-Code Systems

Dedicated brute-force firmware for Evil Crow RF V2 targeting 34+ fixed-code RF protocols including CAME, Nice FLO, Princeton, and Chamberlain across 300-928 MHz with precise OOK timing.

[Details](https://openhardware.directory/projects/evilcrowrf-v2-rf-brute-force-firmware-for-fixed-code-systems) | [Markdown](https://openhardware.directory/projects/evilcrowrf-v2-rf-brute-force-firmware-for-fixed-code-systems/md)

## KBD News Feature — Micro Journal Ortholinear WriterDeck Keyboard

KBD News coverage of the Micro Journal Rev.3 Nadia, a 30-key handwired offset monoblock split keyboard by Un Kyu Lee designed for distraction-free writing, with ESP32 controller and Google Drive sync.

[Details](https://openhardware.directory/projects/kbd-news-feature-micro-journal-ortholinear-writerdeck-keyboard) | [Markdown](https://openhardware.directory/projects/kbd-news-feature-micro-journal-ortholinear-writerdeck-keyboard/md)

## Remote Attic Temperature Monitor with Bee Data Logger

Monitor remote attic or crawlspace temperatures over extended periods using the Bee Data Logger's ultra-low-power deep sleep mode. Logs temperature data to SD card for seasonal analysis and HVAC optimization.

[Details](https://openhardware.directory/projects/remote-attic-temperature-monitor-with-bee-data-logger) | [Markdown](https://openhardware.directory/projects/remote-attic-temperature-monitor-with-bee-data-logger/md)

## ESP32-DIV

Open-source wireless network analysis tool built on ESP32 with 2.8" ILI9341 display, triple NRF24 modules for 2.4GHz scanning, CC1101 sub-GHz transceiver, and SD card logging.

[Details](https://openhardware.directory/projects/esp32-div) | [Markdown](https://openhardware.directory/projects/esp32-div/md)

## EvilMouse — Mousejacking Attack Firmware for Evil Crow RF V2

Firmware combining sub-GHz RF replay with 2.4 GHz mousejacking attacks on the Evil Crow RF V2, using both CC1101 modules and the NRF24L01 to exploit vulnerable wireless mice and keyboards.

[Details](https://openhardware.directory/projects/evilmouse-mousejacking-attack-firmware-for-evil-crow-rf-v2) | [Markdown](https://openhardware.directory/projects/evilmouse-mousejacking-attack-firmware-for-evil-crow-rf-v2/md)

## Rain Gauge Data Logger with Bee Data Logger

Build a battery-powered rain gauge that logs rainfall measurements with RTC timestamps to an SD card. Uses the Bee Data Logger's ADC inputs to read a tipping bucket rain gauge sensor for long-term weather tracking.

[Details](https://openhardware.directory/projects/rain-gauge-data-logger-with-bee-data-logger) | [Markdown](https://openhardware.directory/projects/rain-gauge-data-logger-with-bee-data-logger/md)

## ECRFV2 Dual Jammer — Simultaneous Dual-Frequency RF Jamming

Lightweight jamming firmware for Evil Crow RF V2 that uses both CC1101 modules simultaneously to jam two different sub-GHz frequencies at once, with simple two-button physical controls.

[Details](https://openhardware.directory/projects/ecrfv2-dual-jammer-simultaneous-dual-frequency-rf-jamming) | [Markdown](https://openhardware.directory/projects/ecrfv2-dual-jammer-simultaneous-dual-frequency-rf-jamming/md)

## Beehive Health Monitor with Bee Data Logger

Monitor beehive temperature, humidity, and weight using the Bee Data Logger's Qwiic sensor ports and deep sleep mode. Track hive conditions to predict swarming, assess colony health, and optimize honey production.

[Details](https://openhardware.directory/projects/beehive-health-monitor-with-bee-data-logger) | [Markdown](https://openhardware.directory/projects/beehive-health-monitor-with-bee-data-logger/md)

## EvilCrowPyRF — Python CLI for RF Signal Management

Python command-line tool for managing Evil Crow RF signal captures, enabling scripted receive, transmit, save, and replay operations with support for Tesla signals, jamming, and button assignment.

[Details](https://openhardware.directory/projects/evilcrowpyrf-python-cli-for-rf-signal-management) | [Markdown](https://openhardware.directory/projects/evilcrowpyrf-python-cli-for-rf-signal-management/md)

## Battery Performance Tracker with Bee Data Logger

Use the Bee Data Logger's built-in battery voltage monitoring and ADC channels to track LiPo battery discharge curves over time. Log voltage readings to SD card for analyzing battery health and capacity degradation.

[Details](https://openhardware.directory/projects/battery-performance-tracker-with-bee-data-logger) | [Markdown](https://openhardware.directory/projects/battery-performance-tracker-with-bee-data-logger/md)

## DIY Evil Crow RF V2 el Cheapo — Budget PCB Build from Scratch

Open-source custom PCB design for building an Evil Crow RF V2 clone from off-the-shelf parts including an ESP32 DevKit, two CC1101 modules, and a MicroSD card reader, with gerber files for PCB fabrication.

[Details](https://openhardware.directory/projects/diy-evil-crow-rf-v2-el-cheapo-budget-pcb-build-from-scratch) | [Markdown](https://openhardware.directory/projects/diy-evil-crow-rf-v2-el-cheapo-budget-pcb-build-from-scratch/md)

## Evil Crow RF V2 Setup and RF Attack Tutorial

Step-by-step tutorial covering Evil Crow RF V2 firmware installation on Ubuntu, upgrading to custom firmware via OTA, and practical demonstrations of RF signal jamming and replay attacks with RTL-SDR verification.

[Details](https://openhardware.directory/projects/evil-crow-rf-v2-setup-and-rf-attack-tutorial) | [Markdown](https://openhardware.directory/projects/evil-crow-rf-v2-setup-and-rf-attack-tutorial/md)

## Armachat LoRa Doomsday Communicator

Open-source off-grid LoRa QWERTY communicator for long-range text messaging without infrastructure. Features automatic message resending, contact management, and 4+ km range. Winner of Hackaday Prize 2020.

[Details](https://openhardware.directory/projects/armachat-lora-doomsday-communicator) | [Markdown](https://openhardware.directory/projects/armachat-lora-doomsday-communicator/md)

## Bee Data Logger PlatformIO and Arduino Setup Guide

Set up the Bee Data Logger with PlatformIO and the Arduino framework. Install the BeeDataLogger Arduino Helper library and explore examples for battery monitoring, RGB LED control, RTC, ADC reading, and SD card logging.

[Details](https://openhardware.directory/projects/bee-data-logger-platformio-and-arduino-setup-guide) | [Markdown](https://openhardware.directory/projects/bee-data-logger-platformio-and-arduino-setup-guide/md)

## Build an Armachat LoRa Communicator (Make: Magazine)

Step-by-step Make: Magazine tutorial for building the Armachat LoRa communicator — a battery-powered text walkie-talkie with QWERTY keyboard, RFM95 radio, and 4+ km range using only ~25 components.

[Details](https://openhardware.directory/projects/armachat-lora-communicator-make-magazine) | [Markdown](https://openhardware.directory/projects/armachat-lora-communicator-make-magazine/md)