FreeRTOS Projects

A self-contained SIP PBX designed for the ESP32-S3 that manages VoIP signaling without requiring external servers or cloud dependencies. It leverages C++17 and the ESP-IDF framework to provide a full-featured telephony environment where RTP media flows peer-to-peer, ensuring the microcontroller never becomes an audio bottleneck.

A specialized fork of Espressif's ESP-Hosted-MCU that unlocks low-level radio capabilities typically hidden by stock firmware, including 802.11p, CSI sensing, and FTM ranging. It operates as a wireless co-processor firmware for ESP32 chips, communicating with host MCUs over SDIO using FreeRTOS, lwIP, and NimBLE.

A portable biomedical monitor built on ESP32 and FreeRTOS that tracks ECG, SpO2, temperature, and respiration. It features a validated QRS detection algorithm, local OLED visualization, and a real-time web dashboard for remote patient monitoring.

Solar2MQTT is an ESP32-based firmware bridge that translates data from solar inverters to MQTT for integration with IoT platforms like Home Assistant. It supports a wide range of Chinese-manufactured inverters and features a web-based configuration portal, live JSON data streams, and support for both WiFi and Ethernet modules.

A secondary e-ink desk display designed for AI Agents like Claude Code and Codex, utilizing the M5Paper V1.1 hardware. The project features a Python-based daemon for server-side rendering and an ESP32 firmware that supports Wi-Fi, BLE, and USB communication.

Quectel UniKnect is an embedded software framework designed to simplify the integration of Quectel wireless modules with STM32 microcontrollers. It utilizes FreeRTOS for real-time task management and provides an API-driven interface that eliminates the need for manual AT command handling. The project includes a complete build system, cross-compilation toolchain, and support for essential network protocols like MQTT, HTTP, and FTP.

This project is a specialized fork of the RNode Firmware Community Edition (CE) that introduces NeoPixel status indicators for ESP32-based hardware, specifically the LilyGO LoRa32 v2.1. It serves as a software-defined LoRa modem for the Reticulum network stack, providing visual feedback for boot sequences and data transmission using the ESP32's underlying FreeRTOS-based Arduino core and SPIFFS for asset management.

A high-performance network microphone firmware for Seeed Studio XIAO ESP32 boards that streams 16-bit PCM audio via RTSP. It is designed for integration with BirdNET-Go and BirdNET-Pi for automated bird sound identification and includes a Web UI, MQTT telemetry, and OTA support.

Claude Pocket is a voice-activated AI assistant firmware for the M5Stack Cardputer ADV, powered by Anthropic's Claude and OpenAI's Whisper and TTS APIs. It features a custom C++ implementation that handles voice activity detection, streaming transcription, and real-time audio playback on hardware without external PSRAM.

A transparent UART-to-BLE cable replacement for the ESP32-C6 that implements the Nordic UART Service (NUS). It is specifically optimized for high throughput using BLE 5 features like LE 2M PHY, Data Length Extension (DLE), and credit-based flow control.

OttoClaw is an AI-powered desktop humanoid robot system built on the ESP32-S3 and FreeRTOS. It features a local lightweight agent that handles conversation, memory, and autonomous physical movements through six servos without relying on cloud servers, utilizing LVGL for its graphical interface and SPIFFS for local data persistence.

QuakeGuard is a full-stack IoT architecture that transforms household appliances into a distributed seismic sensor network using ESP32-C3 microcontrollers and ADXL345 accelerometers. The system employs professional-grade STA/LTA detection algorithms and ECDSA cryptographic signing to provide secure, real-time earthquake alerts via a FastAPI backend and React Native mobile application.

An advanced game controller project built on the STM32F103RCT6 microcontroller, featuring integrated power management via the AXP2101 chip. It leverages FreeRTOS for system orchestration and focuses on high-precision analog inputs and efficient wireless communication.

A robust ESP-IDF project for the AI-Thinker ESP32-CAM module featuring real-time MJPEG streaming and automated microSD storage. It provides a web interface and REST API for remote monitoring and control using the FreeRTOS-based ESP-IDF framework.

An ultra-low latency screen mirroring tool for the M5Stack Cardputer that utilizes USB HID injection to deploy a Python-based UDP streaming engine. It features adaptive bitrate management, flicker-free display rendering, and robust WiFi handling on the ESP32 platform.

NoeticMaze is an embedded navigation and control system for the NUCLEO-F446RE development board, integrating Lidar, IMU, and motor control. Built on FreeRTOS, it implements advanced robotics algorithms including ICP-based localization, grid mapping, and A* path planning for autonomous differential-drive robots.

A high-performance, touchscreen-based Sonos speaker controller built for the ESP32-P4 microcontroller. It utilizes the LVGL graphics library for a modern UI and FreeRTOS for managing concurrent tasks like audio metadata polling, image decoding, and time-synced lyrics display.

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.