Platformio GitHub Repositories (2026) · Open Source Tools

SquachWatch is a firmware for the Cheap Yellow Display that gamifies detecting things like Flock Cameras, Trackers, Meta Glasses and so much more!

Run open-source Cardputer apps on Android: plug an ESP32-S3 over USB-OTG and the phone is the screen, keyboard, GPS and flasher. Apps are rebuilt on demand from GitHub against a display/keyboard shim.

LoRa APRS Tracker with Tx and Rx capabilities, Messages, Wx, Winlink and more...

Espressif 32: development platform for PlatformIO

Full RGB LED matrix, based on an ESP32 and WS2812B LEDs or emulated LEDs on TFT.

Transform your spin bike into a Smart Trainer!

Smart energy meter capable of monitoring up to 16 channels. Supports MQTT, REST API, Modbus TCP, InfluxDB, AWS IoT Core. Friendly UI and fully open source (PCB, schematics, components, source code)

Multilayout ESP word clock firmware for ESP8266/ESP8285/ESP32/ESP32-C3, with 35 layouts across 13 languages, WS2812/SK6812 LEDs, web configuration, display effects, auto brightness, MQTT and Home Assistant discovery.

High speed USB serial port LED strip driver for HyperHDR using ESP32 or ESP32-S2 devices. Multi-segment & multi-core support.

Self-contained e-ink dashboard firmware for ESP32-S3 (TRMNL 7.5" DIY kit): crypto & forex, Claude Code and Codex usage limits, air quality, mail, weather. No server needed.