FreeRTOS Projects

A real-time firmware for ESP32-S3 based HUB75 LED matrix displays, specifically designed for Protogen masks. It features sensor-driven interactions using proximity, accelerometer, and microphone inputs, alongside Bluetooth LE control and OTA updates via the NimBLE stack.

OpenSpool is an open-source filament management system that uses NFC tags to automatically sync spool settings with 3D printers. Built on the ESPHome framework for ESP32 microcontrollers, it integrates with printers via MQTT to automate filament identification and configuration.

Esp32Repartition is a specialized tool designed to update ESP32 partition tables via Over-the-Air (OTA) updates, primarily to solve storage constraints for WLED firmware. Built on the ESP-IDF and Arduino frameworks, it enables resizing of app partitions by shrinking data sections without requiring a physical USB connection.

A comprehensive collection of example projects and hardware tests for the Super Mini ESP32-C3 development board. It covers a wide range of functionality including GPIO, ADC, deep sleep, serial communication, and wireless connectivity using the Arduino framework and PlatformIO.

A library for ESP32 Arduino that implements the Nordic UART Service (NUS) to provide a HardwareSerial-compatible BLE interface. It supports both the standard ESP32 BLE stack and the memory-efficient NimBLE-Arduino library, while offering optional integration with the Embedded Template Library (ETL) for deterministic memory management.

Focus Dial is an ESP32-based productivity tool designed to manage focus sessions through physical hardware interaction. It integrates with Home Assistant to trigger environmental changes like lighting scenes and network-level distraction blocking while managing phone notifications via Bluetooth.

An open-source monitoring and control solution for Victron Multiplus II systems using the LilyGo T-Display S3 AMOLED. Built on the ESP32 platform, it provides real-time data on solar power, grid status, and battery health while allowing users to toggle charger and inverter functions.

A multi-platform Commodore 64 emulator designed for ESP32-S3 and ESP32 microcontrollers, supporting various display technologies from integrated LCDs to LED matrix panels. It utilizes FreeRTOS for multi-core task distribution and offers versatile input options including custom Android BLE and web-based keyboards.

An automated solar concentrator system that uses an ESP32-CAM and Arduino Pro Mini to focus sunlight onto a thermal target. It utilizes the ESP-IDF framework and FreeRTOS for computer-vision-based sun tracking and mirror orientation.

WiFiExe is a remote-controlled BadUSB tool built on the ESP32-S3 that enables HID payload execution and data exfiltration via a web-based interface. It leverages the ESP32-S3's native USB capabilities to act as both a keyboard and a mass storage device for security research on Windows 11 systems.

A ROS 2 bridge for controlling Xiaomi Cybergear motors using M5Stack hardware via micro-ROS and Ethernet. The system supports multiple motor configurations, real-time control modes, and parameter tuning through standard ROS 2 interfaces.

A comprehensive development resource for the Seeed Studio XIAO ESP32 family, including the C3, S3, and C6 modules. It provides over thirty modular projects demonstrating hardware-specific features like LiPo battery monitoring, deep sleep optimization, and advanced wireless implementations such as BLE HID keyboards and WebSocket camera servers.

InfiniEmu is a high-fidelity emulator for the PineTime smartwatch, simulating the nRF52832 SoC and its complete peripheral suite including I2C sensors and SPI displays. It enables developers to run production firmware like InfiniTime in both native desktop environments and web browsers using WebAssembly, featuring integrated support for FreeRTOS debugging and LittleFS storage.

This project provides a Home Assistant integration and an ESP32-based emulator for Hunter Douglas PowerView Gen 3 window shades. It enables local Bluetooth Low Energy control, battery monitoring, and features a specialized tool for extracting device encryption keys using the WolfSSL library.

pico-vfs is a modular virtual file system designed for the Raspberry Pi Pico that provides a unified POSIX-compliant API for various storage media. It allows developers to mount multiple file systems, such as littlefs and FatFs, across physical storage like onboard flash and SD cards. The project streamlines embedded development by abstracting hardware differences and supporting standard C file operations.

A comprehensive collection of C programming experiments and educational materials covering embedded systems, Linux kernel modules, and network protocols. The project targets platforms ranging from AVR (ATmega, ATtiny) and ESP32 (using FreeRTOS and LwIP) to standard Linux environments, focusing on practical implementations of SPI, ePaper displays, and socket programming.

A multipurpose dual-role BLE-to-serial bridge for ESP32 microcontrollers that supports simultaneous peripheral and central connections. Built on the Arduino platform and utilizing FreeRTOS, it provides a robust communication link with features like automatic data fragmentation, checksums, and a command-based serial protocol. The project targets various ESP32 variants and includes specialized examples for RFID interfacing and Web BLE integration.

dtuGateway is an ESP32-based firmware that bridges Hoymiles HMS-series solar inverters with integrated Wi-Fi to smart home ecosystems. It provides reliable data monitoring and remote control via MQTT, REST API, and openHAB, bypassing the limitations of the official cloud interface. The project supports various local displays and features a captive portal for easy configuration.

This project provides a MicroPython port for the Flipper Zero, enabling native Python script execution on the device. It allows developers to interface with hardware components like GPIO, ADC, PWM, and the internal speaker using Python instead of C. The application is distributed as a Flipper Application Package (FAP) and integrates the standard MicroPython library.

A port of the SQLite3 relational database engine for ESP32 microcontrollers using the ESP-IDF framework. It supports ESP-IDF V5.x, offers specialized PSRAM memory management, and integrates with various filesystems including SPIFFS, LittleFS, and FATFS.

A comprehensive set of examples for integrating the zlib compression library with ESP-IDF on ESP32 series microcontrollers. It includes implementations for SPIFFS, HTTP servers, MQTT, and TCP communication, with a focus on optimizing memory footprint for embedded environments.

An ESP32-S3 based platform that enables MDB protocol communication for vending machine cashless payments and remote telemetry. It features support for EVA DTS DEX/DDCMP standards, Bluetooth connectivity via NimBLE, and integrated foot traffic analysis using a PAX counter.

Klipper_ESP32 is an experimental firmware wrapper that ports the Klipper 3D printer protocol to Espressif ESP32 microcontrollers. It leverages the ESP-IDF framework and FreeRTOS to provide high-performance motion control, integrating the original Klipper source code through a specialized CMake build system.

BreadboardOS is a firmware platform for the Raspberry Pi RP2xxx family designed for rapid prototyping with a focus on a command-line interface. Built on FreeRTOS, it integrates the LittleFS filesystem and microshell to provide a POSIX-like environment for interacting with hardware peripherals and managing system tasks.

A comprehensive technical resource for the ESP32-based JC2432W328 development board, featuring an ST7789 display and capacitive touch. The repository provides a wide range of Arduino-based examples covering WiFi networking, BLE services, hardware peripherals, and LVGL graphics integration.

An open-source device for measuring the transmission distance (td) of 3D printing filaments using an ESP32-C3 and high-precision light sensors. It provides a cost-effective, WiFi-enabled alternative to proprietary tools, specifically designed for HueForge users and filament characterization.

A high-quality sound recording application for the ESP32 that utilizes the PCM1808 ADC to capture audio via the I2S interface. The project records 32-bit monoral sound at 44.1kHz and saves the output directly to an SD card in WAV format.

PathShield is a privacy-focused RF monitoring tool for the M5StickC-Plus, designed to detect and alert users to persistent WiFi and BLE devices. It employs a multi-threaded ESP32 architecture and a sophisticated persistence scoring algorithm to distinguish potential trackers from ambient wireless noise. The system features an offline manufacturer database and customizable detection thresholds for enhanced situational awareness.

AntiHunter is an open-source distributed perimeter defense system designed for wireless network security and operational awareness. Built on the ESP32-S3 platform using the Arduino framework and FreeRTOS, it creates a scalable mesh network of sensors for real-time WiFi/BLE threat detection, device mapping, and signal triangulation. The system integrates GPS, SD logging, and tamper-responsive data destruction to provide a robust digital tripwire for security professionals.

A barebones example demonstrating the usage of LVGL and the ESP-IDF LVGL port on the Sunton 2432S028R (Cheap Yellow Display). It targets the ESP32 MCU using FreeRTOS and ESP-IDF v5.2+ to drive ILI9341 or ST7789 displays with XPT2046 touch support.

Lilka is an open-source DIY handheld console based on the ESP32-S3 microcontroller, designed for education and hobbyist development. It runs the Keira operating system, which utilizes FreeRTOS for task management and provides a framework for both C++ and Lua applications. The platform supports features like NES emulation, SD card storage, and wireless connectivity, all while remaining affordable and easy to assemble.

A smart home controller for roof windows that utilizes Matter over Thread on the Espressif ESP32-C6 platform. It combines environmental sensing via an AM2301 sensor with hardware control for window automation, integrating directly into ecosystems like Home Assistant through a Thread border router.

NeoLED is a specialized ESP32 component for driving WS2812 NeoPixel LEDs via the I2S peripheral, ensuring precise timing and flicker-free performance. It is compatible with ESP-IDF versions 4.x and 5.x and offers a rich API for color manipulation, including HSV support and gamma correction. The library is particularly optimized for hardware like the M5Stack Cardputer where reliable GPIO control is essential.

This project integrates the Zig programming language and toolchain with the Espressif IoT Development Framework (ESP-IDF), supporting both Xtensa and RISC-V architectures. It enables developers to leverage Zig's modern features like comptime and meta-programming while maintaining full compatibility with ESP-IDF's FreeRTOS-based ecosystem.

ESPRI is an ESP32-based interface designed to extend the functionality of ham radios, such as the Quansheng UV-K5. Built using the ESP-IDF framework and FreeRTOS, it provides features like wireless UART, AFSK/Morse beacons, audio recording to SD cards, and a web-based control panel.

An ESP32-based voice assistant that integrates I2S audio recording, Deepgram speech-to-text, and multiple text-to-speech engines like OpenAI and Google TTS. It utilizes the latest ESP-IDF I2S drivers to handle digital microphones and amplifiers while managing audio storage on a microSD card.