lwIP Projects

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.

An ESP32-based bridge that interfaces CAN bus systems with IoT environments using the Lawicel (SLCAN) protocol. It supports real-time CAN data monitoring and transmission via a web interface, Serial, or WebSockets, and is designed for automotive and industrial applications.

This project provides a unique method for configuring Wi-Fi credentials on the Raspberry Pi Pico W by emulating a USB Mass Storage device. It uses a virtual FAT12 filesystem to map a text file directly to the microcontroller's flash memory, allowing users to set network settings without specialized software.

An ESP-IDF based firmware for creating local mesh networks using ESP32-DevKitV1 hardware. It features a self-hosted web server for configuration, real-time topology visualization via WebSockets, and a custom OTA update mechanism that broadcasts firmware to all nodes in the mesh.

An alternative firmware for Riden WiFi modules that provides Modbus TCP and SCPI support for RD-series power supplies. Built using the Arduino framework for ESP8266, it enables integration with professional lab automation tools and provides a comprehensive web interface for remote monitoring and control.

Cydintosh is a Macintosh Plus emulator designed for the ESP32-based Cheap-Yellow-Display (CYD). It utilizes the Musashi 68k emulator core and umac to run classic Macintosh software alongside modern ESP32 features like WiFi, MQTT, and Home Assistant integration.

A standalone ESP32-S3 firmware project for a custom round external controller for La Marzocco espresso machines. It utilizes the ESP-IDF framework, FreeRTOS, and the LVGL graphics library to provide an on-device UI, BLE/cloud connectivity, and a local setup portal for managing machine settings and recipes.

BluButton is an open-source firmware for ESP32 and ESP32-C3 devices, implementing a BLE button transmitter compatible with the Shelly BLU Button ecosystem. Built on ESP-IDF v6.0 and FreeRTOS, it focuses on high energy efficiency through deep-sleep cycles and provides encrypted advertising for secure button event triggers.

A native ESP32 implementation of the ASCOM Alpaca HTTP interface for controlling astronomical equipment. Built using the ESP-IDF framework, it supports a wide range of device types and includes UDP discovery for seamless network integration.

A premium Bluetooth audio receiver firmware for ESP32-WROVER modules that enables high-resolution streaming via LDAC and aptX codecs. It features a custom DSP pipeline for 3D audio enhancement, real-time LED matrix visualization, and a secure OTA recovery system built on FreeRTOS.

GhostESP is a multi-protocol security testing toolkit for ESP32 microcontrollers, built on the ESP-IDF framework and FreeRTOS. It provides extensive capabilities for Wi-Fi, BLE, Sub-GHz, NFC, and Infrared auditing across a wide range of hardware, including M5Stack devices and custom development boards.

A keyboard-focused pentesting firmware for the M5Stack Cardputer-Adv (ESP32-S3) offering over 90 features across WiFi, BLE, sub-GHz, and LoRa. It utilizes FreeRTOS and the NimBLE stack to coordinate complex wireless attacks, including 5 GHz deauthentication and Zigbee sniffing via a companion ESP32-C5 node.

A high-performance serial communication hub for ESP32 and ESP32-S3 microcontrollers that bridges UART data to USB, WiFi, and Bluetooth. It features protocol-aware optimizations for MAVLink, SBUS, and CRSF, and includes a comprehensive web-based configuration interface.

SVITRIX is an open-source, AI-developed firmware for the Ulanzi Smart Pixel Clock TC001 and custom ESP32-based LED matrices. It features a robust MQTT and HTTP API for integration with home automation systems like HomeAssistant, supporting dynamic custom apps, visual effects, and real-time environmental sensor data.

A high-performance, multi-backend secp256k1 elliptic curve cryptography engine optimized for CPU, GPU, and embedded systems. It supports a comprehensive cryptographic stack including ECDSA, Schnorr, and ZK proofs, targeting platforms like ESP32, STM32, and RISC-V.

Zhilly is an AI-powered portable cybersecurity tool for ESP32-S3 devices, enabling voice-controlled pentesting, RF/IR signal manipulation, and HID emulation. Built on the ESP-IDF framework, it utilizes FreeRTOS, LVGL, and NimBLE to provide a sophisticated, hands-free interaction model for security researchers.

RuView is an open-source WiFi sensing platform that leverages Channel State Information (CSI) from ESP32-S3 sensors to perform human pose estimation, vital sign monitoring, and environment mapping. It utilizes a high-performance Rust-based processing pipeline and FreeRTOS-powered firmware to enable camera-free, privacy-preserving spatial intelligence at the edge.

An enhanced USB/IP protocol implementation for the ESP32S3 that enables sharing physical USB devices over a network. Built on the ESP-IDF framework and lwIP stack, it optimizes transmission stability for peripherals like ST-Link debuggers, keyboards, and serial tools.

This project demonstrates how to configure Wi-Fi credentials on a Raspberry Pi Pico W or Pico 2 W using Bluetooth Low Energy (BLE). It implements a custom GATT-based protocol using the BTstack and lwIP libraries to securely receive SSIDs and passwords from a mobile device.

SecureGen is an open-source hardware security device based on the ESP32 T-Display that serves as a TOTP/HOTP authenticator and a BLE-enabled password manager. It utilizes FreeRTOS for system management and hardware-accelerated AES-256 encryption to provide a secure, offline alternative to software-based authentication tools. The system features a built-in web management interface for configuration and credential management without requiring cloud connectivity.

UniGeek is a comprehensive multi-tool firmware for ESP32-based handheld devices, offering a suite of tools for WiFi security, Bluetooth analysis, and hardware module interfacing. Built on the Arduino framework and FreeRTOS, it supports a wide variety of hardware including M5Stack, LilyGO, and custom DIY builds.

A standalone digital photo frame firmware built with ESPHome for the ESP32-P4, designed to stream photos directly from an Immich server. It features smart portrait pairing, automatic tone adjustment, and local network privacy without requiring external hubs or cloud services.

ESP-PPB is an open-source, wireless, battery-powered platform for distributed, phase-coherent Wi-Fi Channel State Information (CSI) capture. Built on the ESP32-C3 and the ESP-IDF framework using FreeRTOS and LwIP, it achieves sub-PPB clock alignment by disciplining a VCTCXO using Wi-Fi Fine Timing Measurement (FTM). This enables advanced wireless sensing applications like angle-of-arrival estimation and indoor localization without the need for wired synchronization.

ClawPuter is an interactive pixel-art desktop companion for the M5Stack Cardputer (ESP32-S3) featuring a lobster character with rich animations and real-time weather integration. It leverages the OpenClaw AI gateway for streaming chat, voice-to-text via Groq Whisper, and bidirectional synchronization with a macOS desktop app.

XiaoClaw is an integrated firmware for the ESP32-S3 that combines voice interaction with a local AI agent. It utilizes the ESP-IDF framework and FreeRTOS to provide a complete system for voice I/O, LLM-powered reasoning, tool calling, and autonomous task execution.

An edge-only acoustic drone detection system built for the ESP32-S3 that uses FFT-based harmonic analysis to identify rotor signatures. It features encrypted LoRa communication between detectors and gateways, with seamless integration into Home Assistant via MQTT.

Hyperk is a minimalist, high-performance WiFi LED driver for ESP8266, ESP32, and Raspberry Pi Pico W microcontrollers. It provides low-latency control for addressable LEDs like WS2812B and SK6812, featuring native integration with HyperHDR and Home Assistant. The firmware utilizes FreeRTOS and the lwIP stack to manage high-speed UDP streaming and a responsive web-based configuration interface.

OpenToys is an open-source framework for building local voice AI companions and robots using ESP32-S3 hardware and Apple Silicon for edge processing. It leverages Whisper ASR, Qwen3-TTS, and MLX-optimized LLMs to provide a fully offline, multilingual conversational experience without cloud dependencies. The project includes a desktop control application built with Tauri and React, alongside specialized Arduino-based firmware.

Frekvens is an open-source ESP32 firmware modification for IKEA Frekvens and Obegränsad LED displays. It adds smart-home integrations, 35+ display modes, and real-time connectivity via MQTT and WebSockets, transforming static hardware into internet-connected IoT displays.

An open-source AWD controller for Volkswagen and Audi Group vehicles using Haldex Generation 1, 2, 4, and 5 differentials. Built on the ESP32-C6, it utilizes dual CAN interfaces to intercept and modify vehicle signals, enabling custom torque distribution, standalone operation, and wireless tuning via a web interface.

Macerun is a bare-metal Minecraft 1.16.5 server implementation written in C for the ESP32-S3 microcontroller. It leverages FreeRTOS and raw lwIP sockets to deliver a functional multiplayer experience on highly constrained hardware, featuring procedural world generation and NVS-based state persistence.

A real-time thermal imaging system that streams 80x62 resolution frames from an ESP32-S3 to a Node.js web interface via TCP and WebSockets. It features a comprehensive dashboard with temperature overlays, live charting, and multiple color map presets for visual analysis.

An ESP32-C6 based environmental monitor that tracks CO2, VOCs, temperature, and more using the Zigbee protocol. Built on the ESP-IDF framework with FreeRTOS, it features seamless integration with Zigbee2MQTT and supports OTA updates.

A Wi-Fi provisioning and OTA update component for ESP32 using a captive portal. It automatically handles credential management via NVS and provides a web interface for network scanning and firmware uploads when no connection is available.

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.