Open Source Embedded Projects

Cydintosh is a Macintosh Plus emulator designed for the ESP32-based Cheap-Yellow-Display (CYD). It utilizes the Musashi 68k emulator core and umac to run classic Macintosh software alongside modern ESP32 features like WiFi, MQTT, and Home Assistant integration.

A specialized harness designed for AI-assisted embedded firmware development using the Zephyr RTOS. It provides a comprehensive set of 'Agent Skills' covering core Zephyr subsystems like BLE, device drivers, and kernel primitives to help AI agents generate, understand, and manage firmware code efficiently.

This project provides software-based tools and algorithms to correct the ADC non-linearity issues in RP2040 and RP2350 microcontrollers, specifically addressing the RP2040-E11 errata. It includes measurement firmware, Python scripts for data analysis, and general-purpose or device-specific calibration code for C++ and Python environments.

A standalone ESP32-S3 firmware project for a custom round external controller for La Marzocco espresso machines. It utilizes the ESP-IDF framework, FreeRTOS, and the LVGL graphics library to provide an on-device UI, BLE/cloud connectivity, and a local setup portal for managing machine settings and recipes.

A sophisticated quadruped crawling robot powered by an STM32F103C8T6 microcontroller and an ESP32-CAM for real-time vision and remote connectivity. It utilizes FreeRTOS for multi-tasking and MicroPython for the wireless communication stack, supporting both cloud-based MQTT control via a mobile app and local control through a web interface.

BluButton is an open-source firmware for ESP32 and ESP32-C3 devices, implementing a BLE button transmitter compatible with the Shelly BLU Button ecosystem. Built on ESP-IDF v6.0 and FreeRTOS, it focuses on high energy efficiency through deep-sleep cycles and provides encrypted advertising for secure button event triggers.

OpenDualMotorDriver is an open-source, high-performance dual H-bridge motor controller powered by the Raspberry Pi RP2350 microcontroller and Texas Instruments DRV8412 driver. It supports brushed DC motor control from 4V to 40V with integrated current sensing, magnetic encoder feedback, and a comprehensive serial API for closed-loop position and speed control.

The Tick is an ESP32-C3-based covert access control implant designed to intercept, log, and replay credentials across Wiegand, Magstripe Clock&Data, and OSDP protocols. It features a robust hardware design with integrated level shifting and a high-efficiency DC-DC converter, supported by a modular software stack utilizing NimBLE for Bluetooth and a custom HTTP interface for remote management.

An ESP32-based gateway for Hekatron Genius Plus X smoke detectors, enabling integration with modern smart home systems via MQTT and WebSocket. It features a custom PCB design with a CC1101 transceiver and a web-based management interface built on SvelteKit.

Pixel Frame is an ESP8266-based firmware designed to display live data from services like OpenWeatherMap and Last.fm on LED matrices or TFT displays. Built with the Arduino framework, it leverages the TFT_eSPI library for graphics and includes a Linux-based environment for cross-platform testing.

An optimized Arduino library for background audio playback and speech synthesis on Raspberry Pi Pico (RP2040/RP2350) and ESP32. It uses an interrupt-driven architecture to support MP3, AAC, WAV, and text-to-speech while keeping the main application loop responsive and dropout-free.

A firmware project for the Raspberry Pi Pico that decodes the Behringer Ultranet audio protocol into multiple I2S streams. It utilizes the RP2040's PIO modules for high-speed signal decoding and its dual-core architecture to synchronize audio between different clock domains.

DeskPet is a pixel-art companion for the M5Stack Cardputer that synchronizes with Claude Code sessions via Bluetooth Low Energy (BLE). Built on the ESP32-S3 using the NimBLE stack and ArduinoJson, it provides real-time visual feedback and hardware-based command approval for AI agent workflows.

A polyphonic music synthesizer for the ESP32-S3 and ESP32-P4 that streams PCM WAV samples directly from an SD card. It utilizes a custom FAT32 lookup system to bypass RAM limitations, enabling the playback of massive multi-velocity sample sets with built-in ADSR envelopes and reverb effects.

Project Shadow Flight is a 1U CubeSat designed for Earth Observation, built using the FreeRTOS framework on STM32 microcontrollers. It features a modular architecture including an On-Board Computer, a dedicated sensor board, and a VGA camera payload for capturing geo-referenced imagery. The system demonstrates the use of COTS components and the CCSDS Space Data Link Protocol for reliable satellite telemetry and control.

A passive USB 1.1 protocol sniffer for the Raspberry Pi RP2040 that leverages the PIO coprocessor for high-speed signal capture. It supports Low-Speed and Full-Speed traffic with zero electrical interference, providing full protocol decoding and a structured callback API.

A lightweight GPS diagnostic and information tool designed for the M5Stack Cardputer. It parses NMEA 0183 data using the TinyGPSPlus library to display real-time coordinates, satellite visibility, and sky plots. The project features configurable UART settings and microSD support for persistent configuration on ESP32-S3 hardware.

A premium Bluetooth audio receiver firmware for ESP32-WROVER modules that enables high-resolution streaming via LDAC and aptX codecs. It features a custom DSP pipeline for 3D audio enhancement, real-time LED matrix visualization, and a secure OTA recovery system built on FreeRTOS.

A robust framework and collection of examples for implementing Ethernet connectivity on Raspberry Pi Pico (RP2040/RP2350) using FreeRTOS. It integrates WIZnet's hardwired TCP/IP controllers with mbedTLS for secure MQTT and SSL/TLS communication.

A DIY dual-channel laboratory power supply controlled by an ESP32, featuring a 3.5-inch TFT display and rotary encoder interface. It utilizes stepper motors for precise physical adjustment of voltage regulators and implements a closed-loop feedback system using INA219 sensors for accurate voltage and current monitoring.

A differential-drive autonomous robot utilizing an STM32F446RE for real-time motor control and ROS1 Noetic for mapping and navigation. The system employs a transparent Bluetooth communication link to perform laser-only SLAM via hector_slam on a remote host, optimizing performance for high-speed racing in static environments without the need for traditional odometry.

GhostBLE is a portable BLE privacy scanner and wardriving application designed for the M5Stack ecosystem, including the Cardputer and StickC series. Leveraging the NimBLE-Arduino library on the ESP32 platform, it provides real-time analysis of Bluetooth Low Energy devices, privacy posture heuristics, and GPS-tagged logging for security research and education.

This project demonstrates high-performance computer vision on the STM32N6570-DK discovery board, utilizing an NPU-accelerated quantized AI model for real-time object detection. It leverages a multi-threaded FreeRTOS architecture to manage a complex pipeline including DCMIPP image processing, hardware H.264 encoding, and USB Video Class (UVC) streaming.

An advanced embedded controller for the Icom IC-705 that decodes CI-V band data via Bluetooth or USB to manage external transverters and power amplifiers. Built for the M5Stack ecosystem using FreeRTOS, it provides automated frequency translation, PTT breakout, and seamless integration with PC-based logging and digital mode software.

GhostESP is a multi-protocol security testing toolkit for ESP32 microcontrollers, built on the ESP-IDF framework and FreeRTOS. It provides extensive capabilities for Wi-Fi, BLE, Sub-GHz, NFC, and Infrared auditing across a wide range of hardware, including M5Stack devices and custom development boards.

An internet radio project for the WT32-SC01-PLUS (ESP32-S3) module featuring a sophisticated LVGL-based touchscreen interface. It utilizes ESP32-audioI2S for streaming and LittleFS for configuration storage.

An autonomous mobile robot based on the Arduino Uno that uses a trio of infrared sensors to track and follow a person or object. The system integrates an L298N motor driver for motion control and features a dedicated Lithium-Ion charging circuit for portable operation.

An ATmega328P-based embedded system designed to automate the egg incubation process by regulating temperature, humidity, and rotation. It utilizes DHT11 and DS18B20 sensors for environmental monitoring and controls a stepper motor and relay-driven heating element to maintain optimal hatching conditions.

HydroponicOne is a production-grade IoT control system for hydroponic environments, utilizing ESP32 microcontrollers for real-time sensor monitoring and actuator automation. It features a modern technical stack including a React dashboard, a Node.js backend, and a dual-database architecture using PostgreSQL and InfluxDB.

A high-performance serial communication hub for ESP32 and ESP32-S3 microcontrollers that bridges UART data to USB, WiFi, and Bluetooth. It features protocol-aware optimizations for MAVLink, SBUS, and CRSF, and includes a comprehensive web-based configuration interface.

This project enables the use of a physical BMW E90 instrument cluster as a display for PC driving simulators using an Arduino-compatible microcontroller. It bridges game telemetry to the cluster via CAN bus, supporting a wide range of features including gauges, gear indicators, and warning lights.

An ESP32-S3 firmware for the GeekMagic-S3 hardware that displays time, date, and weather data. It leverages FreeRTOS and LVGL to provide a responsive 240x240 UI, features a web configuration interface, and supports remote image and text notifications via HTTP endpoints.

PD240W is an adjustable power supply designed for motor drives, leveraging USB-C Power Delivery 3.1 to deliver up to 240W at 48V 5A. Built on the Raspberry Pi Pico (RP2040) platform, it features a custom C++17 firmware stack for high-voltage negotiation, hardware-level safety monitoring via the INA228 power monitor, and a rich LCD user interface.

A lightweight Baseboard Management Controller (BMC) firmware built on Zephyr RTOS for STM32 and RISC-V microcontrollers. It provides essential server management features including a Redfish-compliant API, host power control, and a web-based administration interface.

Tenstorrent System Firmware is a Zephyr RTOS-based firmware stack designed for Tenstorrent AI hardware controllers. It manages the System Management Controller (SMC) and Device Management Controller (DMC) for platforms like Blackhole and Grendel, providing custom drivers for AI accelerators and supporting secure updates via MCUboot.

SVITRIX is an open-source, AI-developed firmware for the Ulanzi Smart Pixel Clock TC001 and custom ESP32-based LED matrices. It features a robust MQTT and HTTP API for integration with home automation systems like HomeAssistant, supporting dynamic custom apps, visual effects, and real-time environmental sensor data.