2 layers100 × 65 mm
DSL Modem
Qeteshpony/DSL-Modem
Control a certain DSL-Modem through its internal serial port with a Raspberry Pi
57 partsMIT
Open source hardware
228 boardsKiCad boards from 122 GitHub repositories tagged “open-source-hardware”, the most starred first; open any of them in PCBKit.
- 4 layers46 × 44 mm
LED Bar Controller
Qeteshpony/LED-Bar-Controller
Small controller for 2-color LED Bars
43 partsBSD-2-Clause - 2 layers65 × 50 mm
MainsFrequencyMonitor
Qeteshpony/MainsFrequencyMonitor
Single board solution to power an ESP32 and use it to measure the mains frequency through an optoisolator
38 partsBSD-2-Clause - 2 layers25 × 20 mm
RotaryDial2Serial
Qeteshpony/RotaryDial2Serial
Translate signals from a phone rotary dial to serial data
14 partsBSD-2-Clause - 4 layers30 × 36.5 mm
TwinBusExpander
Qeteshpony/TwinBusExpander
WiFi Module for TwinBus Intercom and ESPHome
31 partsBSD-2-Clause - 2 layers40 × 40 mm
SG10 FT232H
quantrng/quantrng.github.io
Hardware Quantum Random Number Generator (QRNG) based on avalanche transistor noise and FT232H / MCU interface. Open-source hardware, KiCad schematics, and Python entropy testing scripts.
16 parts - 4 layers100 × 80 mm
BluepillIOCarrier
SimulatedFlow/kicad-board-2026-07-16-bluepill-io-carrier
STM32 Bluepill IO carrier board - breakout / baseboard with screw terminals, relay and GPIO headers. Hand-solderable THT, bare PCB. KiCad source files.
39 parts - 4 layers100 × 80 mm
Bluepill Relay Carrier-2CH
SimulatedFlow/kicad-board-2026-07-16-bluepill-relay-carrier-2ch
STM32 Bluepill 2-channel relay carrier board - baseboard for two relays with screw terminals. Hand-solderable THT, bare PCB. KiCad source files.
25 parts - 4 layers100 × 80 mm
BluePill SmartNode RS485
SimulatedFlow/kicad-board-2026-07-16-bluepill-smartnode-rs485
STM32 Bluepill SmartNode - RS485 bus node carrier with 2 relays for Modbus / field bus setups. Hand-solderable THT, bare PCB. KiCad source files.
32 parts - 4 layers80 × 70 mm
BluePill Relay Carrier
SimulatedFlow/kicad-board-2026-07-18-bluepill-relay-carrier
STM32 Bluepill relay carrier board - single-channel relay baseboard with screw terminals. Hand-solderable THT. KiCad source files.
25 parts - 4 layers
Homematic-6Button Flush
SimulatedFlow/kicad-board-2026-07-21-homematic-6button-flush
Homematic-compatible 6-button flush-mount wall transmitter, 50 mm round - STM32G030 + CC1101 868 MHz. Bare PCB, KiCad source files.
18 parts - 4 layers27 × 30.6 mm
PulseWristTrack
SimulatedFlow/kicad-board-2026-07-24-pulsewristtrack
PulseWristTrack - wearable wrist tracker PCB with Seeed XIAO nRF52840 Sense, MAX30102 pulse / SpO2 sensor, IMU and BLE. Bare PCB, KiCad source files.
18 parts - 4 layers100 × 80 mm
AmpelKreuzungLernplatine
SimulatedFlow/kicad-board-2026-07-27-ampelkreuzunglernplatine
Traffic-light intersection learning board - 20 THT LEDs, driven by an STM32 Bluepill or a Raspberry Pi. Soldering practice / teaching kit, bare PCB.
47 parts - 4 layers100 × 80 mm
BlueMatrixTicker
SimulatedFlow/kicad-board-2026-07-27-bluematrixticker
BlueMatrixTicker - STM32 Bluepill LED matrix ticker / scrolling display board. Hand-solderable THT, bare PCB. KiCad source files.
21 parts - 4 layers100 × 80 mm
BluePillComNode
SimulatedFlow/kicad-board-2026-07-27-bluepillcomnode
STM32 Bluepill ComNode - industrial comms carrier with RS485, CAN bus and 0-10V analog interface. Hand-solderable THT, bare PCB. KiCad source files.
26 parts - 4 layers100 × 80 mm
BluePixelMatrix
SimulatedFlow/kicad-board-2026-07-27-bluepixelmatrix
BluePixelMatrix - STM32 Bluepill addressable RGB pixel matrix board. Hand-solderable THT, bare PCB. KiCad source files.
142 parts - 4 layers100 × 60 mm
HM BlueRemote-12
SimulatedFlow/kicad-board-2026-07-27-hm-blueremote-12
Homematic-compatible 12-button handheld remote based on the STM32 Bluepill. Bare PCB, hand-solderable THT. KiCad source files.
23 parts - 4 layers68.6 × 53.3 mm
ArduinoUnoProtoShield
SimulatedFlow/kicad-board-2026-07-28-arduinounoprotoshield
Arduino Uno prototyping shield - perfboard-style THT grid for sensors and displays, solder-your-own DIY shield. Bare PCB, KiCad source files.
24 parts - 4 layers100 × 100 mm
SMDProtoBreakoutPanel
SimulatedFlow/kicad-board-2026-07-28-smdprotobreakoutpanel
SMD prototyping breakout panel - snap-apart adapter boards (SOIC, SOT, QFN) for hand-soldering SMD parts to 2.54 mm THT grid. Bare PCB.
37 parts - 4 layers100 × 80 mm
Bluepill CNC3Axis Carrier
SimulatedFlow/kicad-board-2026-07-29-bluepill-cnc-stepper
STM32 Bluepill CNC stepper controller carrier - baseboard for 4 stepper driver modules (A4988 / DRV8825), endstops and spindle. Bare PCB, KiCad sources.
23 parts - 4 layers80 × 80 mm
Bluepill QuadFC Carrier
SimulatedFlow/kicad-board-2026-07-29-bluepill-quad-fc
STM32 Bluepill quadcopter flight controller board - IMU, ESC headers and receiver input. Bare PCB, KiCad source files.
21 parts - 4 layers80 × 60 mm
Bluepill SensorNode Carrier
SimulatedFlow/kicad-board-2026-07-29-bluepill-sensor-node
STM32 Bluepill environmental sensor node carrier - BME280 temperature / humidity / pressure, RTC and OLED display. Solder kit, bare PCB.
21 parts - 4 layers65 × 56 mm
RPi DroneRover HAT
SimulatedFlow/kicad-board-2026-07-29-rpi-drone-hat
Raspberry Pi drone HAT - carrier board with 4 ESC outputs and IMU for Raspberry Pi based multicopters. Solder kit, bare PCB, KiCad sources.
19 parts - 4 layers100 × 80 mm
Bluepill BrushedQuad Driver
SimulatedFlow/kicad-board-2026-07-30-bluepill-brushed-quad
STM32 Bluepill brushed quadcopter board - 4 MOSFET motor drivers and IMU for brushed micro drones. Solder kit, bare PCB, KiCad source files.
27 parts