# 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.

**44 project listed.**

## 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)

## 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)

## WeatherFlow ESPHome E-Paper Display

An ESPHome-based weather display for LILYGO T5 4.7" showing a 4-day forecast overview, 24-hour precipitation chart, temperature, humidity, and clock via Home Assistant.

[Details](https://openhardware.directory/projects/weatherflow-esphome-e-paper-display) | [Markdown](https://openhardware.directory/projects/weatherflow-esphome-e-paper-display/md)

## LILYGO T-Higrow ESPHome Plant Sensor

ESPHome firmware for the LILYGO T-Higrow WiFi plant sensor that monitors soil moisture, fertilizer levels, light (lux), temperature, and humidity — with direct Home Assistant integration via a beautiful flower dashboard card.

[Details](https://openhardware.directory/projects/lilygo-t-higrow-esphome-plant-sensor) | [Markdown](https://openhardware.directory/projects/lilygo-t-higrow-esphome-plant-sensor/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)

## 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)

## ESPHome Weather Display for T-Display S3

A Home Assistant–integrated weather display for the LILYGO T-Display S3 using ESPHome, showing AccuWeather daily forecasts and Met.no hourly forecasts with button-toggled views.

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

## 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)

## 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)

## T-ETH-Lite ESPHome Wired Ethernet Sensor Node

ESPHome configuration for the LILYGO T-ETH-Lite ESP32-S3 that integrates W5500 wired Ethernet with I2C sensor support — ideal for reliable, WiFi-free Home Assistant sensor nodes using standard Cat5 cable.

[Details](https://openhardware.directory/projects/t-eth-lite-esphome-wired-ethernet-sensor-node) | [Markdown](https://openhardware.directory/projects/t-eth-lite-esphome-wired-ethernet-sensor-node/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)

## 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)

## 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)

## 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)

## 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)

## Chirp-RPi Python Library for Raspberry Pi

Comprehensive Python library by Göran Lundberg for reading the Chirp I2C soil moisture sensor on Raspberry Pi. Supports calibrated moisture percentage, multiple temperature scales, deep sleep, and I2C address changes.

[Details](https://openhardware.directory/projects/chirp-rpi-python-library-for-raspberry-pi) | [Markdown](https://openhardware.directory/projects/chirp-rpi-python-library-for-raspberry-pi/md)

## ESPHome Chirp I2C Sensor Component

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.

[Details](https://openhardware.directory/projects/esphome-chirp-i2c-sensor-component) | [Markdown](https://openhardware.directory/projects/esphome-chirp-i2c-sensor-component/md)

## Tasmota Chirp Soil Moisture Sensor Driver

Official Tasmota driver (I2cDriver33) for the Chirp / Catnip I2C soil moisture sensor. Supports auto-discovery of multiple sensors, sleep/wake control, and I2C address management on ESP8266 and ESP32.

[Details](https://openhardware.directory/projects/tasmota-chirp-soil-moisture-sensor-driver) | [Markdown](https://openhardware.directory/projects/tasmota-chirp-soil-moisture-sensor-driver/md)

## ESP Easy Soil Moisture Sensor Plugin (P047)

ESP Easy plugin P047 for the Chirp / Catnip I2C soil moisture sensor. Reads temperature, moisture, and light with configurable I2C addresses, sleep mode, and formula-based value recalculation on ESP8266.

[Details](https://openhardware.directory/projects/esp-easy-soil-moisture-sensor-plugin-p047) | [Markdown](https://openhardware.directory/projects/esp-easy-soil-moisture-sensor-plugin-p047/md)

## pyChirpLib MicroPython Library

MicroPython library by scopelemanuele for the Chirp / Catnip I2C soil moisture sensor. Enables MicroPython-based microcontrollers to read soil moisture, temperature, and light over I2C with minimal code.

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

## micropython-chirp MicroPython Driver

MicroPython driver by robberwick for the Chirp I2C soil moisture sensor. MIT-licensed library with ReadTheDocs documentation for reading moisture data on MicroPython-compatible boards.

[Details](https://openhardware.directory/projects/micropython-chirp-micropython-driver) | [Markdown](https://openhardware.directory/projects/micropython-chirp-micropython-driver/md)

## Zelkova Tree Monitoring with Chirp Sensors

Open-source environmental monitoring project deploying 40 Chirp I2C soil moisture sensors in Crete for long-term tree health monitoring. Demonstrates large-scale capacitive soil sensing for forestry research.

[Details](https://openhardware.directory/projects/zelkova-tree-monitoring-with-chirp-sensors) | [Markdown](https://openhardware.directory/projects/zelkova-tree-monitoring-with-chirp-sensors/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)

## 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)

## Chirp I2C Sensor with Particle Photon

Community integration of the Chirp I2C soil moisture sensor with the Particle Photon IoT platform. Includes a ported library and cloud-connected moisture monitoring for wireless plant care applications.

[Details](https://openhardware.directory/projects/chirp-i2c-sensor-with-particle-photon) | [Markdown](https://openhardware.directory/projects/chirp-i2c-sensor-with-particle-photon/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)

## 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)

## 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)

## MicroPython ESP32 7.5\" E-Paper Weather Display

A MicroPython weather station using an ESP32 with a 7.5\" Waveshare e-paper display and DHT20 sensor. Connects to WiFi, fetches live weather data from OpenWeatherMap, and displays forecasts alongside local room temperature and humidity readings.

[Details](https://openhardware.directory/projects/micropython-esp32-7-5-e-paper-weather-display) | [Markdown](https://openhardware.directory/projects/micropython-esp32-7-5-e-paper-weather-display/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)

## 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)

## 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)

## Airlytix ES1 ESPHome Configuration

Official ESPHome YAML configuration for the Airlytix ES1 air quality sensor, featuring SEN55, SCD41, SHT40, DPS310, VEML6040 sensors and a custom sound level meter component with I2S microphone support.

[Details](https://openhardware.directory/projects/airlytix-es1-esphome-configuration) | [Markdown](https://openhardware.directory/projects/airlytix-es1-esphome-configuration/md)

## Airlytix ES1 3D-Printable Case Design

Open-source 3D-printable enclosure for the Airlytix ES1 air quality sensor, available as STEP, STL, and FreeCAD source files. Compact 62.5 x 63 x 34 mm design with wall-mount clip.

[Details](https://openhardware.directory/projects/airlytix-es1-3d-printable-case-design) | [Markdown](https://openhardware.directory/projects/airlytix-es1-3d-printable-case-design/md)

## Airlytix ES1 Home Assistant Automation Blueprints

Ready-to-use Home Assistant automation examples for the Airlytix ES1: CO2-based ventilation control, PM2.5 air purifier triggers, VOC kitchen extraction, nighttime noise alerts, and air quality notifications.

[Details](https://openhardware.directory/projects/airlytix-es1-home-assistant-automation-blueprints) | [Markdown](https://openhardware.directory/projects/airlytix-es1-home-assistant-automation-blueprints/md)

## Airlytix ES1 Getting Started with Home Assistant

Step-by-step tutorial for setting up the Airlytix ES1 air quality sensor: WiFi configuration, Home Assistant ESPHome integration, entity reference, sensor calibration offsets, and quality threshold customization.

[Details](https://openhardware.directory/projects/airlytix-es1-getting-started-with-home-assistant) | [Markdown](https://openhardware.directory/projects/airlytix-es1-getting-started-with-home-assistant/md)

## ESPHome Sound Level Meter Component

Custom ESPHome external component for measuring environmental noise levels (Leq, Lmin, Lmax, Lpeak) with A/C/Z frequency weightings using I2S microphones. Used by the Airlytix ES1 for sound monitoring.

[Details](https://openhardware.directory/projects/esphome-sound-level-meter-component) | [Markdown](https://openhardware.directory/projects/esphome-sound-level-meter-component/md)

## Airlytix ES1 Review: ESPHome Air Quality Monitor

CNX Software's review of the Airlytix ES1 ESPHome-based environment monitor covering its SEN55, SCD41, SHT40, DPS310, and VEML6040 sensor suite, Home Assistant integration, pricing, and comparison with other air quality devices.

[Details](https://openhardware.directory/projects/airlytix-es1-review-esphome-air-quality-monitor) | [Markdown](https://openhardware.directory/projects/airlytix-es1-review-esphome-air-quality-monitor/md)