Software for Your Open Hardware

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

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.

HACS-compatible Home Assistant integration for Panasonic Aquarea heat pumps via HeishaMon, providing native entities, climate controls, sensors, and multi-heatpump support through MQTT auto-discovery.

Use the VoltLink CP2102N with its optional Shelly programming adapter to safely flash Tasmota or ESPHome firmware onto Shelly relays without mains power, powering them via USB during the process.

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.

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.

Comprehensive overview of Elecrow's Meshtastic device lineup including the ThinkNode M1, M2, and CrowPanel Advance 3.5-inch. Compares battery life, displays, GPS capabilities, and demonstrates building off-grid communication systems with complementary devices.

Community-maintained documentation for the Armachat Compact, including a quick start guide, bill of materials, board overview, assembly instructions, and developer resources for building your own LoRa messenger.

The LILYGO T-Echo running SoftRF Badge Edition acts as a low-power aviation proximity awareness device for glider and paraglider pilots, detecting nearby aircraft via FLARM, OGN, and ADS-L protocols on its e-paper display.

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.

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.

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

ESPHome external component by dyptan-io for the Chirp / Catnip I2C soil moisture sensor on ESP32. Reads soil moisture, temperature, and light intensity with YAML-based configuration and Home Assistant integration.

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.

ESPHome configuration that turns the LILYGO T-Internet-POE into a wired Ethernet Bluetooth Active Proxy for Home Assistant — powered and connected entirely via a single PoE cable with no WiFi required.

A 1000 bps FSK software modem for the LILYGO T-TWR Rev 2.1, enabling digital data transmission over UHF with LDPC forward error correction and real-time ASCII waterfall display.

Ultra-low-power custom APRS tracker firmware for the LILYGO T-Echo that uses the nRF52840's deep-sleep modes to achieve 100 µA standby current while transmitting GPS positions over LoRa.

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.

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.

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.

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.

A complete MicroPython operating system with Android-like gestures, App Store, and OTA updates, with official board support for the LILYGO T-Watch S3 Plus including display, touch, IMU, audio, and vibration configuration.

Modern, open-source wireless keyboard firmware built on Zephyr RTOS with BLE-first architecture, split keyboard support, and MIT license. The dominant firmware for wireless mechanical keyboards with 3,900+ GitHub stars.

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.

Transform the Sonoff NSPanel into a full Home Assistant dashboard using Tasmota Berry and the community NSPanel Lovelace UI firmware. Control lights, climate, media, and scenes from the touchscreen.