FreeRTOS Projects

OpenHRStrap is an open-source DIY chest-strap heart-rate tracker built around the ESP32 microcontroller. It utilizes the AD8232 ECG module to capture biosignals and implements the Pan–Tompkins algorithm for real-time R-peak detection. The device functions as a standard BLE heart rate sensor, allowing for seamless integration with fitness applications like Strava.

A modular AIoT firmware for the Pixlpal desktop companion based on the ESP32-S3 SoC. It utilizes the ESP-IDF framework and FreeRTOS to power an interactive 128x64 RGB LED matrix display with features like Wi-Fi connectivity, BLE control, and audio processing.

An advanced internet radio player based on the ESP32-A1S Audio Kit, utilizing the ESP-ADF framework and FreeRTOS. It features a local web server for remote control, support for multiple audio formats, 10-band equalization, and SD card recording capabilities.

An ESP32-based SCARA drawing robot that utilizes three servo motors for articulated movement. It features a modern web-based control interface built with Preact and uses the Arduino framework for firmware management and asynchronous web serving.

An ESP32-C3 based smart thermos that measures liquid temperature using an NTC thermistor and displays it on a 1.28-inch round capacitive touch screen. The project utilizes the LVGL library for its user interface and NimBLE for Bluetooth connectivity.

A stealthy HID injection tool built on the ESP32 platform that emulates a Bluetooth keyboard to wirelessly inject keystrokes into paired devices. It supports Ducky Script-style payloads and features a comprehensive serial command interface for remote execution on Windows, macOS, Linux, and Android.

An ESP32-based firmware designed to disrupt 2.4 GHz wireless signals using nRF24L01 PA/LNA modules. It features multiple operational modes for interfering with Bluetooth, BLE, Wi-Fi, and RC drone communications for educational research.

A comprehensive collection of peripheral, scheduling, storage, and utility components for the ESP32-S3 using the ESP-IDF framework. It provides standardized APIs for a wide range of I2C, SPI, UART, and ADC sensors, alongside advanced utilities like Kalman filters and data logging.

An ESPHome-based integration for monitoring and controlling Deye photovoltaic inverters via Modbus RTU. It targets ESP32 microcontrollers using the ESP-IDF framework to provide real-time data visualization and control within Home Assistant.

A comprehensive IoT environment monitoring solution built for ESP32 and ESP8266 microcontrollers. It provides real-time tracking of temperature, humidity, and water levels, featuring a Flask-based backend with SQLite storage and a responsive web dashboard for data visualization and remote threshold management.

An interactive shell module for Raspberry Pi Pico applications running FreeRTOS. It provides a VT100-compatible terminal interface with support for custom commands, subcommands, autocompletion, and command history.

A custom firmware launcher for the Tab5 device based on M5Launcher, utilizing the LVGL graphics library for its user interface. It allows users to load and flash binary firmwares from a FAT32-formatted SD card onto the ESP32-P4 based hardware.

A DIY Zigbee-enabled gas meter built on the ESP32-C6 using the ESP-IDF framework. It tracks real-time gas consumption and flow rates, integrating with Zigbee2MQTT and Home Assistant for energy management. The device features battery optimization, non-volatile storage for data persistence, and OTA firmware updates.

A compact 2.4GHz frequency disruptor based on the ESP32-C3 and dual nRF24L01 modules. It targets Bluetooth, BLE, WiFi, and RC drone signals for educational security testing and controlled disruption.

A DIY home laser shooting range built with the ESP32 and an OV2640 camera. The system detects laser pulses from a toy gun, applies perspective correction for accurate scoring, and provides a web-based dashboard for real-time feedback.

An ESP32-C6 based development board in the Raspberry Pi Zero form factor, designed for high-voltage industrial and IoT applications. It features integrated support for Wi-Fi 6, Bluetooth, Zigbee, and Thread, alongside RS-485/DMX interfaces and a wide 5-60V DC power input range.

A dual-band WiFi deauthentication and security tool for BW16 and ESP32 microcontrollers. It provides a web-based interface for network scanning, packet injection, and real-time monitoring of 2.4GHz and 5GHz traffic. The system includes an integrated sniffer for capturing EAPOL and management frames, with logs stored on an SD card.

An open-source prototype for silent animatronic cat ears using brushless motors and Field Oriented Control (FOC). It utilizes an ESP32 microcontroller with the SimpleFOC library to achieve precise, quiet motion, overcoming the noise issues of traditional RC servos. The system integrates magnetic encoders and an IMU for sophisticated movement and orientation tracking.

A modular firmware platform for the ESP32-S3 SoC built using the ESP-IDF framework. It features a structured architecture divided into hardware drivers, services, core logic, and applications, utilizing the NimBLE Bluetooth stack for wireless connectivity.

An ESP32-powered wearable device that translates sign language gestures into spoken or text-based output. It utilizes a K-Nearest Neighbors (KNN) algorithm for real-time gesture classification and features a web-based 3D visualization tool built with Three.js.

A compact, open-source multi-purpose sensing device inspired by the Star Trek tricorder. Built on the Seeed Studio XIAO ESP32C3, it integrates a spectrometer, CO2 sensor, and environmental sensors with a low-power Sharp Memory Display for portable data visualization.

An Arduino-based project for the ESP32-S3 that displays real-time vehicle telemetry like turbo boost, gear position, and temperatures on the Alfa Romeo Giulia's instrument cluster. It utilizes dual CAN bus controllers to bridge high-speed engine data and low-speed dashboard display signals, leveraging FreeRTOS for multi-core processing.

A comprehensive firmware for ESP32-based portable gaming consoles featuring a 128x64 OLED display. It includes classic games, a web-based configuration interface, and system utilities like a LittleFS file manager and a calculator.

An ESP32-based firmware for controlling Charlton & Jenrick fireplaces using a CC1101 433 MHz transceiver. It supports multiple RF modulation profiles (2-FSK and ASK/OOK) and integrates with Home Assistant via MQTT while offering a standalone web interface.

A sophisticated dynamic code loading system for the ESP32-P4 microcontroller that enables native RISC-V execution without firmware reflashing. It provides a Python-based host toolchain for cross-compilation and a high-speed USB transport protocol for rapid algorithm deployment and testing. Built on ESP-IDF and FreeRTOS, it supports automatic memory management, cache coherency, and seamless NumPy integration.

A demonstration project showcasing Embedded Swift on the ESP32-C6 microcontroller. It features a rotating 3D cube animation on an OLED display using the U8g2 library and I2C communication within the ESP-IDF framework.

A lightweight C99 library for creating Model Context Protocol (MCP) servers on resource-constrained embedded systems. It enables developers to transform existing C functions into AI-accessible tools with minimal code changes, supporting multiple transports and various RTOS environments like FreeRTOS and Zephyr.

A comprehensive DIY project for building ESP32-based environmental sensors and cameras integrated with Home Assistant via the ESPHome framework. It covers hardware selection, 3D casing design, wiring, and non-linear calibration to ensure accurate readings despite internal heat generation.

An internet-connected weather station application for the ESP32 Cheap Yellow Display (CYD). It features a 3-day forecast using the OpenWeather API, displaying weather icons and data on a 2.8-inch TFT screen. The project utilizes LittleFS for asset storage and the TFT_eSPI library for high-performance graphics.

An advanced animated character display system based on the ESP32-P4 platform using the DSI interface to drive a 10.1-inch LCD. It features a 12x5 grid for characters and emoji with a unique 'card falling' animation effect. The system utilizes LVGL for UI rendering and NimBLE for BLE communication via an external ESP32-C6 co-processor.

A multi-interface network gateway firmware for the ESP32 series that implements the Reticulum Network Stack (Reticulum). It enables transparent packet routing and bridging across WiFi, ESP-NOW, LoRa, Serial, and HAM radio interfaces, providing a resilient and cryptographically secured communication mesh.

An embedded project that repurposes the ESP32's internal Audio PLL and I2S Master Clock to create a functional FM radio transmitter. By dynamically adjusting the APLL frequency via a high-resolution timer, it achieves real-time frequency modulation of an 8kHz audio signal. The project demonstrates advanced peripheral manipulation for RF generation without external transmitter chips.

A collection of example projects demonstrating interactive map displays on ESP32 microcontrollers using the 0015__map_tiles component and LVGL. These projects showcase features like GPS navigation, LoRa communication, and SD card-based tile loading across various development boards.

StickiNote is a digital sticky note application optimized for the ESP32-P4 high-performance microcontroller. It utilizes the MIPI DSI interface for 10-inch displays and the LVGL v9 library to provide a smooth, e-paper-styled user interface with persistent storage.

An ESP32-based filament movement sensor for the Elegoo Carbon Centauri 3D printer. It integrates a Big Tree Tech SFS 2.0 sensor to detect jams or runouts and communicates via WebSockets to pause the printer. The project features a web-based UI for configuration and real-time status monitoring.

A high-performance Nintendo Entertainment System (NES) emulator ported to the ESP32, capable of running games at native speeds with full audio. It leverages FreeRTOS for concurrent CPU and APU emulation and supports various memory mappers covering approximately 79% of the NES library.