FreeRTOS Projects

An open-source e-ink desk companion, clock, and air quality monitor based on the ESP32. It utilizes the ESP-IDF framework for firmware and includes a custom PCB, 3D-printable enclosure, and a web-based configuration tool.

A library for ESP32 that enables firmware and filesystem (SPIFFS/LittleFS) updates over Bluetooth Low Energy. It supports both BlueDroid and NimBLE stacks, offering features like data compression, secure RSA-based signature verification, and customizable callbacks for update monitoring.

A 3rd stage graphical bootloader for ESP32-S3 and ESP32-P4 devices that allows users to select applications from OTA partitions via a visual menu. Built with ESP-IDF and LVGL, it manages multiple firmware images and provides a mechanism for applications to return to the bootloader upon restart.

A graphical application example for ESP32 microcontrollers using the Swift 6.1 programming language and SDL3. It supports various Espressif SoCs including ESP32-C3, ESP32-C6, and ESP32-P4, utilizing ESP-IDF 5.4 and LittleFS for asset management.

A portable I2C bus scanner for the M5Cardputer that identifies connected devices and displays their hexadecimal addresses on the built-in screen. Built with the Arduino framework, it provides a real-time diagnostic tool for hardware debugging via the Grove connector.

A firmware for the M5Cardputer that emulates USB and BLE HID keyboard and mouse devices. It features mode switching via physical buttons and utilizes the ESP32-S3's wireless capabilities for remote input control.

A GPS logging application for the M5Cardputer platform that records location data to an SD card. It features a dual-mode operation including a power-saving sleep mode and a normal mode with real-time data display on the integrated screen.

An alarm system for the M5Cardputer platform that utilizes a PIR sensor to detect motion. The project features audible alerts, RGB LED status indicators, and an interactive display interface with adjustable volume and brightness controls.

A lightweight serial UART communication utility for the M5Cardputer. It enables users to configure serial settings and communicate with external 3.3V devices through the device's Grove port using the ESP32-S3 hardware UART.

A Raspberry Pi Pico-based bridge that converts HDMI CEC (Consumer Electronics Control) signals into USB HID keyboard inputs, enabling TV remote control for media centers like Kodi. It utilizes FreeRTOS for task management and supports both RP2040 and RP2350 microcontrollers.

A powerful universal remote control application for the M5Cardputer (ESP32-S3) supporting over 3,400 remote profiles and 30,000 commands. It features compatibility with Flipper-IRDB .ir files, automatic scanning for device discovery, and NVS-based favorites storage.

A mini-project that transforms the ESP32-based Cheap Yellow Display (CYD) into a standalone ANSI-VT100 serial terminal. It utilizes the FabGL library to handle terminal emulation and display output, allowing users to monitor serial data from other microcontrollers at 115200 baud without a PC.

A lightweight IEEE 1588 Precision Time Protocol (PTP) implementation optimized for resource-constrained microcontrollers. It supports both master and slave configurations, multiple transport mechanisms, and advanced clock servos like PID and Kalman filters. The library targets ARM Cortex-M platforms and integrates with lwIP or EtherLib network stacks to achieve sub-100ns synchronization precision.

A synchronization tool written in CPython and MicroPython for fetching FIT activity files from XOSS and Cycplus cyclo-computers via Bluetooth Low Energy (BLE). It implements the YMODEM protocol over the Nordic UART Service to provide an open-source alternative to proprietary mobile applications.

An optimized Nintendo Entertainment System (NES) emulator rewritten for the ESP32 platform. It supports full audio emulation and achieves native speeds on dual-core ESP32 hardware using the Arduino framework and TFT_eSPI library.

An open-source firmware for the Cuybot smart car platform based on the ESP32-C3. It utilizes FreeRTOS for efficient task management and features WebSocket communication for real-time monitoring and control. The project integrates obstacle avoidance, line following, and PWM-based motor control for educational robotics applications.

A comprehensive resource for running MicroPython and LVGL on the ESP32-2432S028R 'Cheap Yellow Display'. It provides precompiled firmwares for LVGL9 and LVGL8, specialized drivers for ILI9341 and XPT2046, and detailed guides for display calibration and UI development.

A comprehensive firmware for ESP32 microcontrollers to control Jarolift TDEF 433MHz radio shutters via a CC1101 transceiver. It provides a mobile-friendly WebUI, MQTT integration for smart home systems like Home Assistant, and advanced timer functions including sunrise and sunset triggers.

A collection of custom ESPHome components designed for Xiaomi MIoT devices that utilize the MIoT Serial Communication protocol. It enables users to replace proprietary cloud-dependent firmware with open-source alternatives for local control of air purifiers, fans, and humidifiers via Home Assistant.

A demonstration project for building a Zigbee-enabled on/off light using the M5Stack M5NanoC6 development kit. It leverages the ESP32-C6 SoC's native Zigbee support within the Arduino environment to interface with Zigbee2MQTT and Home Assistant.

A security-focused firmware for ESP32 microcontrollers that replicates Pwnagotchi-style peer detection and network interaction. It supports Wi-Fi scanning, deauthing, and BLE functions while providing an emotional interface through various display modules.

An ESP32-based IoT system designed to monitor beehive health by tracking environmental conditions, bee activity, and hive weight. It features solar power management and real-time data synchronization with Firebase for remote access via a web dashboard.

A polyphonic music synthesizer for the ESP32-S3 that plays PCM WAV samples directly from a microSD card. It features 15-20 stereo voices, ADSR envelopes, built-in reverb, and MIDI control, utilizing custom SDMMC routines for high-speed data access without preloading samples into RAM.

A real-time audio analysis application for the M5Cardputer that provides a spectrum analyzer, oscilloscope, and musical tuner. It utilizes the ESP32-S3's I2S interface for high-speed microphone sampling and implements fixed-point FFT and wavelet-based pitch tracking for efficient signal processing.

A utility and library for the M5Cardputer platform designed to configure WiFi connections using the integrated physical keyboard. It manages credential persistence via EEPROM and provides a user interface for manual SSID and password entry when a connection cannot be established automatically.

A comprehensive camera API for MicroPython targeting ESP32-based boards. It provides a stable interface for various image sensors like the OV2640 and OV5640, supporting both synchronous and asynchronous capture modes with ESP-IDF integration.

An autonomous virtual pet application for the ESP32-S3 that 'feeds' on nearby WiFi networks. It features a full-color UI on an ST7789 display, persistent state management via Preferences, and a custom behavior engine that evolves the pet based on environmental factors.

An IoT edge device based on the ESP32 microcontroller, featuring Ethernet connectivity via the W5500 chip and environmental sensing with the DHT22. It serves as a gateway for collecting and processing sensor data at the edge before passing it to a network.

A portable wardriving device designed for real-time Wi-Fi network scanning and data logging. It integrates GPS for location tracking, an OLED display for a user interface, and a micro SD card for storing captured network data in a format compatible with Wigle.net.

A specialized embedded scheduling core designed to maintain stable outgoing data pipelines on microcontrollers like the ESP32. It manages transmission through budget-based degradation and backpressure handling, ensuring critical telemetry is preserved during bandwidth saturation.

An ESP32-based IoT clock designed for children's sleep routines, built using the ESPHome framework. It utilizes a WS2812B LED matrix to provide color-coded status indicators and visual countdowns, featuring automatic time synchronization and Home Assistant integration.

An ESP32-based cybersecurity tool designed for scanning, capturing, and replaying RF signals in the Sub-GHz range. It supports multiple frequency bands including 315, 433, 868, and 915 MHz, providing a portable platform for signal analysis and security testing.

An ESP32-based IoT medical assistant that manages medication schedules through alarms, monitors storage conditions with temperature and humidity sensors, and features an automated light-shielding curtain. It integrates with a Node-Red dashboard via MQTT and includes a web-based WiFi configuration portal.

A pixel art sketchbook application designed for the M5Stack Cardputer, featuring 8x8 and 16x16 canvas modes with support for custom palettes and PNG export. Built on the Arduino framework for the ESP32-S3, it provides a retro handheld gaming experience for creating and managing digital art on portable hardware.

A full-stack open-source solution for smart aquarium LED control featuring ESP32-based hardware, ESP-IDF firmware, and a Flutter mobile application. It provides high-resolution PWM dimming, sunrise/sunset simulation, and efficient CoAP/CBOR communication for professional-grade lighting management.

A demonstration project for the JC3248W535 display module using the ESP32-S3 microcontroller. It integrates LVGL V9.2.2 with the Arduino_GFX library and includes a custom driver for the AXS15231B touch controller.