Open Source Embedded Projects

This project transforms an ESP32 'Cheap Yellow Display' (CYD) into a graphical Wi-Fi signal analyzer, visualizing network strength and channel congestion. It utilizes the Arduino_GFX_Library to support various display drivers like the ST7789 and ILI9341 on a 320x170 resolution screen, making it compatible with multiple hardware iterations of the CYD platform.

A low-power smart home solution for tracking food and household items using ESP32-C3/S3 microcontrollers and e-paper displays. The system features server-side image rendering to minimize hardware overhead and supports various tri-color and four-color display sizes.

TinyMakerWifi is an enhanced firmware for the TinyMaker MSLA resin 3D printer that introduces WiFi connectivity, a web-based dashboard, and direct integration with PrusaSlicer. Built on the ESP32 platform using the Arduino framework and FreeRTOS, it features advanced resin tracking, power-loss recovery, and over-the-air (OTA) updates.

An embedded desk display project using the Waveshare ESP32-S3-Touch-AMOLED-2.16 to track live Claude Code usage, local weather, and background agent health. The system leverages the LVGL graphics library for its UI and connects to a host computer via Bluetooth LE using the NimBLE stack.

A standalone BLE DFU client for Seeed XIAO nRF52840 and RAK4631 that flashes Nordic-format firmware bundles to target nRF52 devices. It features a USB Mass Storage interface for drag-and-drop firmware updates and uses a configuration-based filtering system to identify and update remote hardware in the field.

A custom-built handheld gaming console powered by the ESP32-S3 and a dual-screen setup (TFT and OLED). It runs E-OS, a custom operating system built on FreeRTOS that features a dual-core architecture for dedicated rendering and logic. The project includes 15 custom-coded games and several applications, utilizing libraries like TFT_eSPI and U8g2 for high-performance graphics.

NucleoOS is a web-native operating system designed for the M5Stack Cardputer (ESP32-S3), featuring both a native firmware UI and a desktop-class web shell. Built on the ESP-IDF framework and FreeRTOS, it optimizes constrained hardware (512 KB RAM) by offloading heavy tasks like AI and image generation to the browser via WebAssembly and WebGPU. The system includes a wide array of applications ranging from offline AI assistants and media players to a suite of security-testing tools.

ESP32-PLC is an open-source firmware project that transforms the ESP32 microcontroller into a functional Programmable Logic Controller (PLC) using ladder logic. Built on the Espressif IoT Development Framework (ESP-IDF) and FreeRTOS, it leverages the ladderlib library to execute industrial control programs and supports web-based logic editing and simulation.

A high-performance media player for the ESP32-S3 capable of playing MJPEG video with synchronized I2S audio. It features a menu-driven interface, utilizes an SD card for storage, and leverages PSRAM to ensure smooth playback on ST7789 displays.

An open-source DC uninterruptible power supply designed specifically for the Raspberry Pi 5, featuring triple-input power paths and smart battery management. It utilizes a dual-MCU architecture with a CH32X035 for power delivery and an RP2040 for the user interface, while supporting remote monitoring via FreeRTOS and the lwIP stack.

FOC Ears is an open-source animatronics project designed to create silent, high-performance cat ears using Field Oriented Control (FOC). Built on an ESP32 microcontroller, it utilizes brushless gimbal motors and magnetic encoders to achieve smooth, quiet motion compared to traditional RC servos. The system integrates an IMU for orientation sensing and is developed using the PlatformIO environment.

An advanced Morse code keyer based on the K3NG project, ported to ESP32 and Raspberry Pi Pico 2W hardware. It features integrated Bluetooth keyboard support, high-resolution TFT touch displays, and GPS-based location tracking, utilizing dual-core processing to maintain precise keying timing.

NRSuite is a modular wireless research toolkit that offloads the radio layer to an ESP32 connected via USB OTG to an unrooted Android device. It enables advanced Wi-Fi operations, BLE HID emulation, and BadUSB functionality within the Termux environment using a custom binary bridge protocol.

RisalDash is a C++ library for ESP32 and ESP8266 that automatically generates real-time web dashboards with zero front-end coding. It features a zero-waste architecture to minimize flash usage, built-in captive portal provisioning, and native integration with Home Assistant and AI agents via the Model Context Protocol (MCP).

An ESP32-based monitoring hub for the 'Cheap Yellow Display' (CYD) that tracks weather, space events, wildfires, and geological activity. It features a custom power management system called Somnus for instant-wake deep sleep and includes a robust calibration system to support various hardware revisions.

LuxDMX is an open-source Art-Net and sACN to DMX512 gateway designed for ESP32 and ESP32-S3 microcontrollers, featuring a live web-based diagnostic interface. It provides professional-grade lighting control with support for RDM, source merging (HTP/LTP), and multiple network interfaces including WiFi and wired Ethernet. The project utilizes a FreeRTOS-based architecture to ensure low-jitter DMX timing while simultaneously serving high-speed telemetry via WebSockets.

An Arduino Nano-based interface designed to enhance the control and safety of dual-track vehicles using inexpensive BLDC motor controllers. It replaces standard filtered PWM with a high-resolution 12-bit DAC and implements configurable drive profiles, throttle shaping, and track trim compensation.

An accessible, 3D-printed robotics platform powered by the ESP8266-based Wemos D1 Mini. It features Wi-Fi and ESP-NOW connectivity for remote control, uses continuous rotation servos for locomotion, and integrates LED matrix displays for visual feedback and sensor data visualization.

AtlasCube is a feature-rich internet radio and smart clock firmware built for the ESP32-S3 using the ESP-ADF and LVGL libraries. It supports streaming various audio formats, Bluetooth A2DP/HFP via external modules, and local SD card playback, all managed through a comprehensive on-device GUI and a standalone web interface. The project is designed for independence from cloud services, offering local MQTT control, OTA updates, and a customizable event system.

VerhoBot is an open-source smart curtain robot based on the ESP32-C3 platform, designed to automate curtain movement for improved sleep cycles. It utilizes a TB6612FNG motor driver and N20 geared DC motor to provide quiet, battery-powered operation with integrated WiFi scheduling and a web-based management dashboard.

HEARD is a mesh network system of ESP32-based devices designed to monitor hiking group safety in remote environments without cellular coverage. It utilizes LoRa for multi-hop communication and GPS for real-time location tracking against pre-loaded GPX routes, featuring a firmware-in-the-loop simulator for protocol validation.

FrameFilm is a retro-styled digital film fridge magnet featuring a 3.6-inch color E-Ink display and an ESP32-S3 microcontroller. It utilizes specialized dithering algorithms to replicate a film aesthetic and supports wireless photo transmission via BLE through a web-based management tool or a WeChat mini-program.

A custom ESP8266-based firmware for the GeekMagic SmallTV smart weather clock, featuring a 240x240 ST7789 display. It utilizes the TFT_eSPI library for rendering and LittleFS for persistent storage of configurations and authentication data. The system provides a comprehensive web dashboard for managing WiFi, OTA updates, and various data feeds including weather, markets, and Home Assistant integrations.

A technical port of the Linux 6.12 kernel to the PlayStation Vita's ARM Cortex-A9 quad-core SoC. It enables core functionality including SMP, the native OLED framebuffer, touchscreen input, and eMMC storage, while resolving critical L2 cache coherency issues found in previous versions.

Codelight is a multi-platform monitoring and remote control system for AI coding agents such as Claude Code, GitHub Copilot, and Cursor. It utilizes a Python companion daemon to broadcast agent status and manage interactive prompts across ESP8266-based desk screens, Android devices, and desktop environments via WebSockets and D-Bus.

Tomato32 is a Pomodoro timer application specifically designed for the Waveshare ESP32-S3-Touch-LCD-3.49 development board. It features a responsive touchscreen interface built with the LVGL graphics library and runs on the ESP-IDF framework using FreeRTOS. The project supports customizable timer profiles, smart power management, and personalized background assets.

An open-source implementation of the SAE J2534-1 v04.04 PassThru standard, designed to connect STM32F407-based CAN adapters to professional vehicle diagnostic software. The project includes a C# Win32 DLL for protocol handling and a FreeRTOS-based ESP32 simulator for bench validation.

A real-time aircraft tracking system built for the ESP32-S3 that visualizes live flight data from the OpenSky Network API. It utilizes a dual-core FreeRTOS architecture to handle concurrent networking and high-speed rendering across a dual-display setup, featuring a hybrid map system optimized for hardware with limited PSRAM.

Noodle is a lightweight neural network inference engine designed to bring machine learning to resource-constrained microcontrollers like the Arduino Uno, Mega, and ESP32. By streaming activations and weights from external storage such as SD cards or flash memory, Noodle bypasses the typical RAM limitations that often prevent low-tier MCUs from running complex models.

A multi-modal robotic control system that translates spoken commands into physical actions using an ESP32-S3 for audio capture and an Arduino UNO for motor execution. The project integrates high-level AI services including Deepgram for transcription, GPT-4o for intent analysis, and 60db for text-to-speech feedback.

OpenC6 BIOS is an advanced modular firmware platform for the ESP32-C6 RISC-V microcontroller that implements a PC-like architecture by decoupling hardware initialization from application logic. Built on FreeRTOS and the ESP-IDF framework, it provides a standardized System Call Interface (ABI) for executing bare-metal payloads, a management engine running on the LP-Core coprocessor, and support for network-based booting and OTA updates.

A comprehensive guide and project for designing custom STM32H573-based PCBs, moving from schematic capture in KiCad to firmware development with STM32CubeIDE. It details essential hardware requirements like power regulation, external oscillators for USB, and 4-layer PCB stackups for signal integrity.

FlipDeFlock is a specialized counter-surveillance and site survey tool for the Flipper Zero that utilizes an external ESP32 module for advanced wireless monitoring. It provides passive detection of Flock Safety ALPR cameras, Bluetooth tracker monitoring, and comprehensive Wi-Fi and NFC security auditing. The project features a custom 'Net Guardian' interface for real-time threat assessment and supports signal-based device homing without the need for directional antennas.

A specialized V2X and ITS G5 message logger that utilizes the ESP32-C5 to capture IEEE 802.11p traffic at 5.9GHz. It supports GPS integration for synchronized time and positioning, logging raw data to SD cards or USB for analysis in Wireshark and CANalyzer.

An autonomous virtual aquarium firmware designed for the ESP32-2432S028R 'Cheap Yellow Display'. It features a stylized dot-grid renderer, simulated aquatic life, and automatic backlight adjustment using onboard sensors.

Periscope-OS is a passive 2.4GHz RF spectrum analyzer and signals intelligence tool for the M5Stack M5StickS3. It utilizes the ESP32-S3's promiscuous mode for deep packet inspection of 802.11 frames, featuring a sonar-style radar UI and IMU-based spatial tracking. The project leverages SPIFFS for telemetry logging and the M5Unified library for hardware abstraction.