EK-TM4C123GXL Tiva C LaunchPad
An 80 MHz Arm Cortex-M4F LaunchPad built around the TM4C123GH6PM, with USB device and host support plus BoosterPack headers.
Manufacturer library
Exact board pages for widely used TI, ST, Espressif, Arduino, Raspberry Pi and Nordic hardware, linked to the manufacturer’s schematics and design resources.
An 80 MHz Arm Cortex-M4F LaunchPad built around the TM4C123GH6PM, with USB device and host support plus BoosterPack headers.
An 80 MHz Arm Cortex-M0+ development kit for the MSPM0G3507 with on-board debug, sensors and high speed ADC demonstration circuitry.
A sub-1 GHz SimpleLink wireless MCU development kit built around the CC1310 for low power sensing and long range radio designs.
A multi-band SimpleLink development kit for the CC1352P wireless MCU, including sub-1 GHz and 2.4 GHz radios with an integrated power amplifier.
A compact ESP32-S3 development board for Wi-Fi, Bluetooth Low Energy, USB and embedded AI experiments.

by GEIGEIGEIST
KLOR is 36-42 keys column-staggered split keyboard. It supports a per key RGB matrix, encoders, OLED displays, haptic feedback, audio, a Pixart Paw3204 trackball and four different layouts, through brake off parts.
by samyk
KeySweeper is a stealthy Arduino-based device, camouflaged as a functioning USB wall charger, that wirelessly and passively sniffs, decrypts, logs and reports back (over GSM) all keystrokes from any Microsoft wireless keyboard in the vicinity.

by beekeeb
The Piantor Keyboard is a beginner-friendly, easy-to-solder, 42-key or 36-key, diodeless, low profile aggressive column staggered, hotswappable and non-hotswappable, programmable ergonomic mechanical split keyboard powered by Raspberry Pi Pico or other compatible RP2040 boards. It is based on the Cantor Keyboard.

by cardonabits
Haxophone, an electronic musical instrument that resembles a saxophone

by KitSprout
AD 元件庫,AltiumDesigner PCB Library
by strangeparts
Flexible circuit board design for adding a headphone jack to an iPhone 7
by kiibohd
PCB and PCB related bits

by ChrisChrisLoLo
The magnetic, modular, 20-key macropad that can join together to form an ortholinear board

by CircuitSetup
Split Single-phase Energy Meter

by jibrilsharafi
Smart energy meter capable of monitoring up to 16 channels. Supports MQTT, REST API, Modbus TCP, InfluxDB, AWS IoT Core. Friendly UI and fully open source (PCB, schematics, components, source code)

by mecparts
An ESP8266 based RS232 <-> WiFi modem with Hayes AT style commands and LED indicators
by CRImier
My KiCad boards. Can't be bothered uploading individually anymore, so here you go.

by Junkz3
A senior microsoldering technician, available to every repair shop from the seasoned pro to the apprentice. Powered by Claude Opus 5

by NPoole
SMT parts counter that fits in your pocket

by adamjvr
Footprints for the Espressif ESP32 WiFi/BLE Chip and ESP3212 module, for KiCAD EDA

by jkramarz
The Tick is the next evolution in covert access control system implants for simulating adversary-in-the-middle attacks.
by mzuelch
Analog Synth Eurorack Modules

by rossumur
Play color retro games on an arduino with a few cheap components

by jblang
TMS9918A video card for RC2014

by mohoyt
Lagom is an easy to build 65% keyboard using a discrete microcontroller and only through hole components

by ijnekenamay
eurorack modular synthesizers projects using Arduino.

by tebl
A PCB being made while watching Ben Eaters "Build a 6502 computer" video series. Includes the computer itself, a standalone slow clock and an Arduino Mega shield for the bus monitor sketch..

by LouWii
Custom ergo split keyboard project, based on ErgoDox, with hot swap sockets

by hsiang-lee
A lightweight pure C++ library for parsing and rendering RS-274X Gerber files, powered by Blend2D. Runs headless, exports PNG via gerber2image. Dependencies managed with vcpkg.
by jjrobots
B-ROBOT Arduino self balancing robot from JJROBOTS.com
by ChrisChrisLoLo
A 4x10 CFX spaced low-profile mechanical keyboard.

by ChrisChrisLoLo
A 4x10 hotswap ortholinear keyboard that supports multiple configurations.

by ok1cdj
LUA scripts for ESP8266 with NodeMCU firmware

by chili-chips-ba
Peripheral Component Interconnect (PCI) has taken the Express lane long ago, moving to xGbps SerDes. Now for the first time in opensource on the Host side too. Our project roots for the Root Port in 4 ways: |1|openRTL |2|openBFM with unique SIM setup, way faster than vendor's |3|openSW stack |4|one-of-a-kind open backplane.

by 4pplet
Multi layout 60% PCB with support for common ANSI and ISO layouts and split space. SE-version is for use in Polaris, DB-version for use in Bakeneko/Kei.

by duerrfk
Key 2.0 is a Bluetooth IoT Door Lock. It turns a conventional electric door lock into a smart door lock that can be opened using a smartphone without the need for a physical key. Thus, Key20 is the modern version of a physical key, or, as the name suggests, the key version 2.0 for the Internet of Things (IoT) era.
by jjrobots
New and improved version of our Balancing Robot B-ROBOT

by LibreSolar
MPPT solar charge controller with dual USB ports

by mohoyt
Litl is an easy to build 40% keyboard using only through hole components.

by 30350n
PCB panels for Mutable Instruments eurorack modules
by BathroomEpiphanies
Tutorial on making keyboard PCB layouts in KiCAD

by buganini
KiCad Workspace / Panelizer / Build Variants / Differ / FreeCAD Bridge for PCB Bending & Assembly
by embeddedalpha
Repository for PCB Design Projects
by LOM-instruments
Elektrosluch 3+ • electromagnetic listening device
by technoblogy
A self-contained computer with its own display and keyboard, based on an ATmega328 or ATmega1284, that you can program in Lisp.

by LukeVassallo
RL_PCB is a novel learning-based method for optimising the placement of circuit components on a Printed Circuit Board (PCB).
by insidegadgets
Read ROM, Read RAM or Write RAM from/to a Gameboy Cartridge. (License CC-BY)

by 1Bitsy
Small breadboard friendly STM32 (eventually other mcu's too) eval boards with exposed JTAG and SWD for the use with Black Magic Probe and others!

by ravinrabbid
RP2040 based firmware and hardware for DIY Taiko no Tatsujin Drum Controllers

by markh-de
PCB Assembly Variants for KiCad

by mazls
Epoxy coffe table with 3d printed hexagon inserts and led pcbs with touch sensor
by Aurelio92
GC+ is a custom board that acts as a Gamecube controller with an upgradable firmware and custom features.

by hemalchevli
PCB ruler with different foot prints ,SMD proto-typing area, tables, various AWG size holes and inches and cm scale.
Every project listed here belongs to its author and is linked to its original repository. Licences are read from the repository metadata and summarised for convenience — check the licence file in the project itself before you manufacture or redistribute a design. ProtoFlow does not host, mirror or verify these files. Index last rebuilt 2026-09-21.