2 layers38.1 × 38.1 mm
SIM868
vul-os/sirboard
Open hardware: 107 KiCad PCB designs — SMD-to-THT breakout adapters, ATTiny/ATMega/ESP development boards, and a 39-part sensor line on a common JST-SH connector.
73 parts56Apache-2.0
Open hardware
629 boardsKiCad boards from 316 GitHub repositories tagged “open-hardware”, the most starred first; open any of them in PCBKit.
- 2 layers180.1 × 180.3 mm
- 2 layers58.4 × 50.8 mm
- 2 layers38.6 × 24.9 mm
OpenVideoModulator
SukkoPera/OpenVideoModulator
Open Hardware RGB to Composite/S-Video Converter
22 parts50 - 2 layers110 × 117 mm
Add sub
tmarhguy/alu
8-bit combinational ALU built from scratch with 3,488 CMOS transistors (KiCad + SPICE + Logisim + 1.24M tests
200 parts48MIT - 2 layers48.3 × 27.9 mm
C06
galopago/misistemita
Electronic hardware prototyping system. Solderless, robust and open source. Solves the typical problem of the circuit that works on a breadboard but stops working on a real-world setup.
44 parts47MIT - 4 layers28.7 × 27 mm
Neurband c
jlcjak/neurband
Open, minimal sEMG wristband like the Meta Neural Band: 8-ch ADS1298 + nRF52832 BLE, dry gold electrodes on a flex, 3D-printed band. KiCad, FreeCAD, Zephyr, Python, simulations.
70 parts46 - 2 layers203.2 × 254 mm
Production red line new silk
tomunderwood99/CharlieBoard
An open-source PCB map showing Boston's subway system
48 parts43MIT - 2 layers47.2 × 55.5 mm
Tinta l2
c0de111/tinta
Battery-powered e-paper sign: room signage, sensor graphs, home automation, or anything over Wi-Fi. Wakes by real-time clock, NFC tap, or button. Raspberry Pi Pico W firmware, custom PCB, and 3D-printed case included.
60 parts39Apache-2.0 - 2 layers55 × 55 mm
Prismo
nu31hackerspace/prismo
Open-source $10 NFC/RFID door access controller for hackerspaces and makerspaces. ESP32-C3 + PN532, MQTT, Home Assistant, self-hosted
29 parts39MIT - 4 layers80 × 42 mm
Module
vd-rd/sbc_allwinner_a13
Open hardware compute module with Allwinner A13 (ARM-A8 @1GHz), DDR3 (max 512MB) and expansions (USB, GPIO, WiFi, LCD, Audio)
179 parts38 - 2 layers100.9 × 62.4 mm
- 2 layers52 × 65 mm
OpenC16Cart
SukkoPera/OpenC16Cart
Open Hardware 16/32/64 Kb Cartridge for the Commodore 16, 116 and Plus/4
16 parts34 - 2 layers65 × 62 mm
- 2 layers170 × 36 mm
Ble soil moisture sensor pannel
Miceuz/ble-soil-moisture-sensor
Bluetooth Low Energy - based soil moisture sensor
62 parts33Apache-2.0 - 2 layers65 × 30 mm
Elegoo dlp controller
openMLA/elegoo-mars-4-dlp-controller
Raspberry pi hat for the elegoo mars 4 dlp UV projector. Implements SPI data transfer for the DLPC1438.
19 parts32 - 2 layers25.1 × 52.3 mm
OpenAmigaDriveSwitcher
SukkoPera/OpenAmigaDriveSwitcher
Open Hardware Floppy Drive Swapper for Amiga Computers
10 parts29 - 2 layers58.4 × 50.8 mm
OpenC64KernalCart
SukkoPera/OpenC64KernalCart
Open Hardware Multi-KERNAL Cartridge for the Commodore 64
13 parts29 - 2 layers56 × 110 mm
Trs pcb
Windfisch/midikraken
A open source, open hardware up-to-16x USB-MIDI-interface for around 15 bucks in its smallest configuration.
125 parts28 - 4 layers95 × 95 mm
TelemetryOnboard
Spaceflight-Rocketry-Giessen-e-V/Telemetry
Open-Source Rocket Telemetry System Based On Radiocrafts RC232 Radio Modules
143 parts27CERN-OHL-S-2.0 - 2 layers111.6 × 37.5 mm
OpenAmiga2000CoproAdapter
SukkoPera/OpenAmiga2000CoproAdapter
Move your Amiga 2000 CPU to the Coprocessor slot!
19 parts27 - 2 layers28.2 × 28.2 mm
OpenAmigaMouseTrigger
SukkoPera/OpenAmigaMouseTrigger
Control Amiga add-on boards through mouse buttons
11 parts27 - 4 layers77.2 × 24.4 mm
Meshimi
alexbegoon/meshimi
Meshimi unlocks powerful mesh networking for your Flipper Zero combining Meshtastic, LoRaWAN and other protocols like Matter and Thread to give you rock‑solid connectivity across miles, even off‑grid.
27 parts26GPL-3.0 - 4 layers66 × 42 mm
