FreeRTOS Projects

A passive RF scanner for the M5Cardputer ADV that detects Flock Safety ALPR cameras and Raven surveillance devices. It utilizes WiFi promiscuous mode and BLE scanning on the ESP32-S3, running entirely locally without cloud connectivity. Detections are logged to an SD card with GPS coordinates and signal strength visualizations.

ehRadio is a feature-rich internet radio firmware for the ESP32 platform, specializing in the ESP32-S3 for high-performance audio streaming. It features a mobile-first WebUI, supports multiple audio decoders like I2S and VS1053, and integrates seamlessly with Home Assistant via MQTT.

A standalone astronomy display for the LILYGO T-Display S3 Pro powered by an ESP32-S3. It tracks solar and lunar conditions using the ipgeolocation.io API, featuring a touch-enabled interface, LittleFS caching for offline use, and seamless Home Assistant integration via MQTT.

An energy-efficient network discovery tool for the ESP32 that utilizes ARP (Address Resolution Protocol) to identify devices on a LAN. Built using ESP-IDF and lwIP, it provides a real-time web interface to monitor device connectivity, bypassing the limitations of traditional ICMP ping scans.

CrumBLE is an advanced e-reader firmware for the Xteink X4 and X3, built on the ESP32-C3 platform using the Arduino framework and NimBLE. It provides enhanced Bluetooth Low Energy (BLE) remote support, a customizable collections system, and optimized e-ink rendering through specialized image pre-caching.

DeskPet is a pixel-art companion for the M5Stack Cardputer that synchronizes with Claude Code sessions via Bluetooth Low Energy. Built on the ESP32-S3 using the Arduino framework and NimBLE, it provides real-time visual feedback on AI agent states, including task progress, token usage, and permission approvals directly from the device's keyboard.

SkySweep32 is an ESP32-based passive drone detection system that monitors radio spectrum across the 900 MHz, 2.4 GHz, and 5.8 GHz bands. Utilizing FreeRTOS for concurrent signal processing, it identifies UAV control and video transmission patterns through hardware-accelerated scanning and signal fingerprinting.

A DIY remote controller for the Quntis Monitor Light Bar PRO+ that enables smart home integration using an ESP32 and NRF24L01 module. It features a dedicated sniffer to capture proprietary remote addresses and supports both standalone MQTT and native ESPHome configurations.

TankSync is a solar-powered, local-first smart water monitoring system built on ESP32 and ESP32-C3 hardware using the ESP-IDF framework. It utilizes long-range LoRa communication to bridge rooftop sensors with an indoor hub, offering Home Assistant integration and offline reliability via FreeRTOS-based firmware.

AirMouseS3 is an ESP32-S3 based gesture-controlled mouse that uses an onboard gyroscope and accelerometer to translate physical movement into cursor actions. Designed for the M5Stack StickS3, it utilizes the NimBLE library for Bluetooth HID connectivity and the M5Unified framework for hardware management.

FIRM is a high-powered rocketry flight computer firmware designed for accurate attitude and position tracking. Built for the STM32F405 microcontroller, it utilizes FreeRTOS and advanced Kalman filtering to process data from an array of inertial and environmental sensors.

FlightRadar24-TTGO is an ESP32-based firmware that provides a real-time aircraft tracking display on TTGO and LilyGo-T-Display-S3 modules. It leverages the FlightRadar24 API for live updates and uses the LVGL library to render detailed flight information and carrier logos. The project includes a web-based configuration portal for setting location parameters, units, and traffic filters.

A comprehensive environmental monitoring system built on the ESP32-S3 platform, featuring an e-paper display for high-visibility, low-power data visualization. The project integrates the GxEPD2 library for display management and includes full PCB schematics and CAD designs for a complete hardware-software solution.

A comprehensive IoT development framework for Realtek Ameba series SoCs, providing a robust environment for building connected applications. It primarily leverages the FreeRTOS kernel and integrates essential networking stacks like lwIP, Wi-Fi, and Bluetooth. The SDK supports a wide range of Realtek chips, including the RTL8730E and RTL8721Dx, with tools for both CLI and VS Code-based development.

An embedded flight tracking application for the ESP32-C3 Super Mini and a 1.28-inch round GC9A01 display. It visualizes live ADS-B aircraft data from adsb.fi on a sonar-style interface, providing real-time updates on aircraft headings, altitudes, and speed vectors with a captive portal for easy configuration.

A single-button wireless keyboard built on the ESP32-C5 that translates Morse code patterns into HID keystrokes over Bluetooth Low Energy. It features a real-time LVGL UI on a tiny 0.85-inch display and implements secure BLE bonding using the NimBLE stack.

An AI companion robot project for the M5Stack AtomS3R that connects an ESP32-based body to local AI services. It supports speech recognition, local LLM chat, and text-to-speech integration while providing a hardware interface for sensors and servos.

Melody Machine is a feature-rich MP3 player and internet radio firmware designed for the LilyGO T-LoRa Pager (ESP32-S3). It leverages FreeRTOS for dual-core audio processing and the LVGL library to provide a responsive graphical interface with support for local microSD playback and WiFi-based streaming.

Galagino is an ESP32-based arcade emulator ported to PlatformIO, supporting 24 classic games like Galaga, Pac-Man, and Donkey Kong. It is specifically optimized for the 'Cheap Yellow Display' (CYD) and designed to be retrofitted into commercial micro-arcade cabinets using the Arduino framework on FreeRTOS.

A specialized port of the ESP32 Marauder firmware for the ESP32-3248S035C development board, featuring a 3.5-inch capacitive touchscreen. It provides mobile tools for Wi-Fi security auditing, network scanning, and wardriving, leveraging FreeRTOS and the Arduino framework for efficient hardware management.

This project provides pre-compiled Tasmota firmware binaries specifically optimized for smart meter reading via SML and advanced scripting on ESP32 and ESP8266 platforms. It features a dual-track approach offering both the classic Tasmota Scripter and the high-performance TinyC VM, utilizing FreeRTOS for background processing and LittleFS for filesystem management. The firmware supports energy monitoring, Google Charts visualization, and emulation of smart battery interfaces like Shelly Pro 3EM.

A reference implementation of a hardware embodiment system for LLMs using an ESP32 with environmental sensors and feedback actuators. It enables self-perception loops where the model can monitor its own haptic and audio outputs via an Arduino-based firmware and a TypeScript bridge service.

PaperSat is a standalone satellite tracking application for the M5Paper S3 e-ink tablet, providing real-time orbital predictions and polar sky plots. It utilizes SGP4 propagation for high-accuracy tracking and features an offline-first design with LittleFS for TLE data caching. The project is designed for amateur radio operators and observers, offering on-device configuration for location and time.

Pixel Pets is an open-source virtual pet ecosystem built for the M5Stack hardware family, featuring interactive digital companions with adaptive behaviors. It utilizes FreeRTOS for task management and the M5Unified library for hardware abstraction, supporting advanced features like ESP-NOW inter-device communication, offline LLM-based voice control, and real-time environment syncing. The project targets various ESP32 platforms including the CoreS3, Core2, and M5StickC PLUS2.

ESP32 Bit Pirate is an open-source firmware that transforms ESP32-S3 development boards into multi-protocol hardware hacking tools. It provides extensive support for digital protocols like I2C, SPI, and UART, as well as radio communications including Wi-Fi, Bluetooth, and Sub-GHz, utilizing FreeRTOS and LittleFS for robust device interaction.

A real-time AI usage monitor for Anthropic's Claude API, featuring an LCARS-inspired Star Trek interface. Built for ESP32-S3 and ESP32-C6 hardware, it tracks token costs, rate limits, and Claude.ai subscription status using a custom UI engine and cloud proxy.

An automated irrigation system built with ESPHome for the M5Stack AtomS3-Lite and Unit Watering modules. It supports up to six plants via I2C expansion and features moisture-based automation and safety limits through Home Assistant integration.

BETTA HA Panel is a runtime-configurable Home Assistant dashboard firmware for ESP32-P4 and ESP32-S3 touchscreen devices. Built on the ESP-IDF framework using LVGL and LittleFS, it allows users to design complex, multi-page layouts via a web-based drag-and-drop editor without requiring YAML configuration or firmware rebuilds.

An expressive AI desk companion based on the Seeed Xiao ESP32-S3 that features a fully animated face system. It utilizes the ESP-IDF framework with FreeRTOS, LVGL for rendering display interfaces, and SPIFFS for asset storage. The project integrates I2S audio components for listening and speaking capabilities, creating a dynamic interactive experience.

An advanced Bluetooth audio receiver firmware for ESP32 that supports high-resolution codecs including LDAC, aptX HD, and AAC. Built on ESP-IDF v5.5.2, it features real-time DSP audio enhancement, integrated LED matrix visualization, and BLE-based remote control.

A custom bootloader for the ESP32 that enables switching between multiple firmware versions using hardware switches. It integrates Over-The-Air (OTA) update capabilities and the ESP-Serial-Flasher library to facilitate remote firmware management and master-slave device flashing.

A real-time monitoring tool for Claude Code usage, designed for the ESP32-2432S028R (CYD) hardware. The project uses a Go-based daemon to track Anthropic API rate limits and displays animated pixel art sprites that react to the user's coding activity.

An open-source watch operating system designed for ESP32-S3 microcontrollers, specifically targeting the LILYGO T-QT Pro. It provides a customizable environment for watch faces and applications, utilizing the TFT_eSPI library for display management and FreeRTOS for task handling. The system includes features like WiFi time synchronization, motion sensing via MPU6050, and integrated games.

Bluehound is a comprehensive BLE reconnaissance and anomaly detection framework designed for real-time device discovery and environment analysis. It combines a Python-based Linux backend with ESP32-powered hardware components to monitor signal stability, detect RF interference, and visualize Bluetooth activity.

M5_Crystal is a modular firmware for M5Stack devices like the M5StickCPlus2 and Cardputer, providing a suite of tools for Wi-Fi, NFC, and Bluetooth interaction. It utilizes the M5Unified and M5GFX libraries for hardware abstraction and is built on a custom wrapper system designed for rapid feature development.

Clawdmeter is an ESP32-S3-powered desk dashboard that monitors Claude Code token usage and displays it on a 2.16" AMOLED screen. It uses the LVGL library for its high-resolution UI and the NimBLE stack to communicate with a host daemon via BLE, while also functioning as a HID keyboard for shortcuts. The project features dynamic pixel-art animations that react to real-time API utilization rates.