Open Source Embedded Projects

An open-source AI chatbot firmware for ESP32 microcontrollers that enables voice interaction using large language models like Qwen and DeepSeek. It features offline wake-up, streaming ASR/TTS, and utilizes the Model Context Protocol (MCP) for IoT device control and cloud-side capability expansion.

An open-source keyboard firmware built on the Zephyr Real Time Operating System. It provides a modern, wireless-first platform for mechanical keyboards, supporting Bluetooth Low Energy, split configurations, and extensive customization through a modular system of shields and behaviors.

A lightweight Bluetooth Low Energy (BLE) library for Arduino based on the NimBLE stack. It provides a resource-efficient alternative to the standard Bluedroid-based BLE library for ESP32 and Nordic nRF5 series microcontrollers, significantly reducing flash and RAM usage.

A port of the Apache NimBLE Bluetooth 5.0 stack for the RT-Thread RTOS. It provides full Host and Controller layer support for Nordic nRF51 and nRF52 series microcontrollers, as well as a Host-only mode for external controllers via HCI UART.

An open-source modular Test and Measurement platform centered around an STM32F769 ARM Cortex-M7 MCU. It provides a complete hardware and software framework for modular power supplies and data acquisition, supporting visual programming via EEZ Flow, SCPI commands, and MicroPython scripting.

A custom MicroPython firmware deployment specifically designed for the Monocle AR glasses. It integrates the Nordic nRF52832 SoC with support for Bluetooth LE, FPGA-driven displays, and camera modules using the LittleFS file system and Nordic SoftDevice.

A MicroPython library for quad 7-segment LED display modules using the TM1637 LED driver. It provides a comprehensive API for controlling brightness, displaying numbers, hex values, temperatures, and scrolling text on various microcontroller platforms.

A collection of MicroPython drivers for various Waveshare e-Paper displays, supporting a wide range of screen sizes and color configurations. The library provides an interface for controlling these displays using SPI or UART on MicroPython-compatible hardware, including support for partial and full refreshes.

An open-source MicroPython-based firmware and hardware project for the mPython (掌控板) educational board. Powered by the ESP32 dual-core microcontroller, it provides a Python 3 compatible environment designed for STEAM education and maker projects.

Lua RTOS is a real-time operating system for embedded systems, featuring a Lua 5.3 interpreter on top of a FreeRTOS-powered micro-kernel. It provides a hardware abstraction layer for ESP32, ESP8266, and PIC32MZ platforms, allowing for programming via Lua or a block-based IDE.

A Python SDK for edge AI vision and audio applications targeting Sipeed's MaixCAM and MaixCAM2 hardware. It provides high-level APIs for NPU-accelerated AI models, image processing, and peripheral control on RISC-V and ARM-based embedded systems.

A full-featured GPS NMEA-0183 sentence parser written in pure Python 3.x for MicroPython and embedded platforms. It provides robust parsing for various GPS messages, including position, time, and satellite data, with specific support for the PyBoard and ESP32.

A specialized driver that adds OV2640 camera support to MicroPython for the ESP32 family. It enables high-resolution image capture by leveraging PSRAM and provides a Pythonic interface for controlling camera parameters like frame size, quality, and special effects.

A comprehensive MicroPython library for InvenSense MPU9150, MPU9250, and MPU6050 sensors. It features a robust 3D vector class, sensor calibration tools, and support for vehicle-relative coordinate mapping, specifically optimized for the Pyboard and other MicroPython-compatible hardware.

A lightweight, Electron-based editor for MicroPython development. It supports serial communication with microcontrollers to provide an interactive REPL, file system management, and direct code execution.

A dual-core embedded application for the STM32H747I-DISCO board utilizing AzureRTOS (ThreadX) and GUIX. It demonstrates a distributed architecture where the Cortex-M4 manages I2C sensor data and peripherals while the Cortex-M7 handles the graphical user interface and display logic.

A Bluetooth-enabled macro keyboard featuring gesture recognition powered by TensorFlow Lite for Microcontrollers on an ESP32. It combines capacitive touch sensors, physical buttons, and an OLED display to provide customizable computer control via BLE HID and AutoHotkey integration.

A comprehensive integration project for Ginlong Solis solar inverters, offering ESPHome and Arduino-based firmware to monitor and control inverter status via Modbus RS-485. It supports hardware like the ESP8266 and the Solis S3 WiFi stick, enabling local data export to Home Assistant and InfluxDB.

An embedded GPS tracking system featuring custom hardware and firmware. The project includes a dedicated PCB design and software components for capturing and managing location data.

HydraBus is an open-source multi-tool hardware platform designed for hardware hacking, debugging, and protocol analysis. It supports various firmware configurations including HydraFW, a MicroPython port, and the Black Magic Probe for JTAG/SWD debugging. The platform targets STM32 microcontrollers and provides a versatile interface for interacting with various hardware protocols.

An open-source firmware for the PineTime smartwatch based on the nRF52832 microcontroller. It utilizes FreeRTOS for task management, LVGL for the user interface, and NimBLE for Bluetooth Low Energy connectivity. The project provides a complete suite of applications, watch faces, and OTA update capabilities for the PineTime hardware.

A feature-rich and beginner-friendly keyboard firmware written in CircuitPython. It enables easy configuration of mechanical keyboards via a single Python file and supports advanced features like split layouts, RGB lighting, and Bluetooth HID.

A comprehensive Arduino library for ESP32 and ESP8266 that simplifies the implementation of web servers with integrated file management, WiFi configuration, and OTA updates. It enables hosting web assets directly from flash memory and includes a built-in code editor for runtime UI adjustments.

A MicroPython-based honeypot designed for the ESP8266 microcontroller that emulates a Telnet server. It features a simulated command-line interface with fake system information and logs attacker activity to external services like dweet.io.

A simple Arduino-style library for creating web-based user interfaces on ESP8266 and ESP32 microcontrollers. It leverages WebSockets for real-time control and supports a wide range of UI elements including sliders, switches, and graphs.

A fully user-reprogrammable Eurorack module based on the Raspberry Pi Pico. It allows users to process control voltages and digital signals using MicroPython, featuring 6 CV outputs, an OLED display, and a comprehensive firmware API for custom synth script development.

A custom camera remote and motion logger for Gyroflow that synchronizes video recording with flight controller data. It runs on ESP32 hardware using MicroPython and supports various camera protocols including Sony MULTI, LANC, and ZCAM UART.

A comprehensive display driver for SSD1306 and SH1106 OLED displays on ESP8266, ESP32, and Mbed-OS platforms. It supports I2C and SPI interfaces, providing a rich API for drawing shapes, text, and progress bars, alongside a dedicated UI framework for managing frames and transitions.

A custom firmware and hardware redesign for the DT78 smartwatch, replacing the original internals with an ESP32. It features a sophisticated LVGL-based UI, custom watchfaces, and integration with the Chronos companion app for notifications and weather data.

ESP-Scope is a web-based oscilloscope application built on the ESP-IDF framework for ESP32 microcontrollers. It utilizes the ESP32's ADC capabilities to capture analog signals and serves a real-time visualization interface via a web browser, supporting sample rates up to 83.3 kHz.

ESP32 MPY-Jama is a cross-platform desktop IDE and management tool designed for Espressif ESP32 microcontrollers running MicroPython. It provides a graphical interface for file management, real-time system monitoring, network configuration, and firmware flashing. The project simplifies IoT development by offering built-in 'Jama Funcs' for rapid testing of peripherals like sensors, LEDs, and displays.

A specialized driver library for Sunton 'Cheap Yellow Display' (CYD) boards, providing a unified interface for LVGL 9. It leverages the Espressif esp_lcd component to support a wide range of ESP32, S3, and C3 based smart displays with integrated touch and peripheral control.

ESP32-TUX is a comprehensive Touch UX template for ESP32 and ESP32-S3 microcontrollers, leveraging the LVGL graphics library and LovyanGFX driver. It provides a ready-to-use framework for building sophisticated HMI applications with features like Wi-Fi provisioning, OTA updates, and theme switching across various 3.5-inch display modules.

A comprehensive handheld OS-like application for the LilyGO T-Deck, leveraging LVGL for its user interface and LovyanGFX for high-performance display driving. It features a ChatGPT client, dynamic WiFi configuration, and system-level controls for audio and brightness.

SnoreSense is a TinyML application designed for the Seeed XIAO MG24 Sense to detect snoring in real-time. It utilizes TensorFlow Lite Micro for on-device inference, processing audio from the onboard PDM microphone to provide a privacy-focused, low-power sleep monitoring solution.