Mechatronics

BACnet Protocol Stack library provides a BACnet application layer, network layer and media access (MAC) layer communications services.

:snowboarder: EJDB2 — Embeddable JSON Database engine C library. Simple XPath like query language (JQL).

Claude Code plugin: describe an object or show a photo, and Claude builds a clean 3D model in Blender, for games, the web, AR or 3D printing. It animates characters too. New in 3.0: Kiln Studio, a local page to view, check and fix your models with Claude.

Customizable Bootloader for STM32 microcontrollers. This example demonstrates how to perform in-application-programming of a firmware located on an external SD card with FAT32 file system.

PureCutCNC is a 2.5D CAD / CAM workspace for designing parts, defining machining operations, previewing toolpaths, and checking the result in 3D and simulation before export.

Apache NuttX Apps is a collection of tools, shells, network utilities, libraries, interpreters and can be used with the NuttX RTOS

A language model trained from scratch and running offline on an ESP32-S3 with a touchscreen chat interface.

A versatile WiFi auditing swiss-knife for ESP32. Provides a professional C++ API for network discovery, performance testing, and security auditing.

🟢 Ultra-fast, tiny C/C++ tracing and logging, even in interrupts ⚡, with printf-like syntax and real-time PC visualization 💻

Optimized ESP32-S3/P4 fully offline speech to text and text to speech system for Micropython and AtomVM, featuring a finetuned STT model for noisy environments, plus a data generation/field capture/model finetuning framework. Includes high performance 4/8bit int kernels for Xtensa/RiscV PIE vector units

Arduino (8-bit AVR) simulator, written in JavaScript and runs in the browser / Node.js

Generic Klipper configuration for 3D printers

Single-line / open-paths sans serif font running in Adobe CC, Inkscape, Rhino and CAD softwares

AI Closed-Loop Programming for embedded systems — the AI writes, flashes, and tests firmware on real hardware until the tests run clean. Spec to silicon, hands off.

modm: a C++23 library generator for AVR and ARM Cortex-M devices

pg0 - Zero-config PostgreSQL with pgvector

Self-hosted print farm manager for multi-brand 3D printer fleets — Prusa, Bambu, Elegoo, Klipper. Live fleet monitoring, automated job dispatch, no cloud.

An Embedded Computer Vision & Machine Learning Library (CPU Optimized & IoT Capable)

PICSimLab - Programmable IC Simulator Laboratory ⚠️ Please note: The official distribution of the PICSimLab simulator binaries is available on github.com and SourceForge.net. Be cautious of unofficial sites, such as picsimlab.com, which do not disclose the owner.

Robô de bancada com ESP32: rosto animado no OLED, conversa por voz em pt-BR, jogos e controle do Mac

STM32 LCD drivers (currently: spi(dma), gpio, fsmc(dma), st7735, st7783, ili9325, ili9328, ili9341, ili9486, ili9488, hx8347g)

C99 firmware core for a 16-series LFP pack. Independent charge and discharge FETs, cell protection, coulomb SOC, and the current and voltage limits an inverter follows. Passive balance runs for 1.0 s, then 200 ms off, so the fault wait finishes on an unloaded sample. No RTOS, no heap. The AFE driver and fieldbus stay on your board.

Complete workflow for professional LVGL UI development. Import from Figma, build in XML with instant preview, test in CI, and export plain LVGL C. No extra runtime needed.

嵌入式开源库速查表，快速定位所需功能。300+ libraries for embedded dev, modularly organized, covering the common ground.

A bare metal programming guide (ARM microcontrollers)

Sming - powerful open source framework simplifying the creation of embedded C++ applications.

Mongoose OS - an IoT Firmware Development Framework. Supported microcontrollers: ESP32, ESP8266, CC3220, CC3200, STM32F4, STM32L4, STM32F7. Amazon AWS IoT, Microsoft Azure, Google IoT Core integrated. Code in C or JavaScript.

C++ library for composing modular firmware at compile-time.

W25qxx, N25Qxx and other SPI FLASH driver for stm32 HAL

Vult is a transcompiler well suited to write high-performance DSP code

Blynk library for IoT boards. Works with Arduino, ESP32, ESP8266, Raspberry Pi, Particle, etc.

Library of parts modelled in OpenSCAD and a framework for making projects

STM32Cube MCU Full Package for the STM32H7 series - (HAL + LL Drivers, CMSIS Core, CMSIS Device, MW libraries plus a set of Projects running on all boards provided by ST (Nucleo, Evaluation and Discovery Kits))

Polyphonic synthesizer with up to 350 voices/channels for the ESP32 dual core family, offering high-fidelity audio (48kHz @ 32bit).

🍬 Code samples from the nanoFramework team used in testing, proof of concepts and other explorational endeavours

Sandbox with hardware IO and hot reload for ESP32 devices

面向嵌入式开发者的一体化桌面调试与分析工作台，集成固件烧录、Cortex-M 源码调试、RTT、串口/Modbus、蓝牙和日志分析。

Build Peri: STL print files, assembly guides, and Raspberry Pi/Arduino software for a DIY voice chatbot. Personal and noncommercial use.

EmuFlight is flight controller software (firmware) used to fly multi-rotor craft.

Embedded JavaScript engine for C/C++

:house: The landing page for .NET nanoFramework repositories.

Espressif 32: development platform for PlatformIO

AI agent operating system for Blender 5.2: bpy knowledge base, AGENT_OK execution contract, 3D-print production gate, worked keyboard and desktop-robot builds.

A comprehensive open-source book on the Precision Time Protocol (IEEE 1588/gPTP). From thought experiments to protocol internals, LinuxPTP source code analysis, and a hands-on ptp-lite implementation (~1000 lines C). A complete guide from theory to running code.

鲜知贴：可复刻的 ESP32 墨水屏食材保鲜提醒器，包含 H5/Node.js/SQLite 服务端、C3/S3 固件、三色/四色屏渲染和 3D 打印外壳，支持公共托管、本地与自托管部署。

A multi-model Muse: personal AI voice assistant on ESP32 - wake word or knob, any OpenAI-compatible brain (STT/chat/TTS mix-and-match), streaming replies, out of the box. Built on muse-gadget-sdk.

Visual Python and C++ nanosecond profiler, logger, tests enabler

An open-source ESP32-C3 desktop companion robot and personal IoT avatar.

SAE J1939 protocol free to use for embedded systems or PC with CAN-bus

The LinuxBoot project is working to enable Linux to replace your firmware on all platforms.