2,783 open source boards in Sensors
Environmental, motion, air-quality and measurement sensor boards. Every board here is a public GitHub project with its KiCad files, read for size, layers and parts. Pick one close to your design and simulate its firmware on HardLabs before you build it.
Mag sensor
Twisted-Fields
36 × 22 mm5 parts2LNo license81
ESP8266ESP-12F Breakout
vul-os
25.4 × 25.4 mm4 parts2LApache-2.055
2040-centered-4x
jkominek
45.5 × 48 mm5 parts2LCustom license53
ESP32MotorBoard MK1
ISSUIUC
65 × 70 mm59 parts4LNo license31
DC12v
collaborative-music-lab
35.6 × 34.2 mm16 parts2LNo license19
Rs485 SN65HVD75 TestBoard
horychen
30 × 17.1 mm11 parts2LGPL-3.016
AVR/ArduinoImu
olin-electric-motorsports
45 × 45 mm48 parts2LNo license14
ESP32XIAO
Josephrp
203.1 × 125.1 mm21 parts2LCustom license12
PQ Botnotsobot
nanosatlab
64 × 58 mm9 parts2LNo license9
Firmware upgrade extension board
LanternD
45 × 50 mm9 parts2LApache-2.06- schematic only · 157 parts
EPS Scales RevA
BroncoSpace-Lab
157 parts2LNo license6 
RP2040/RP2350Dc80c2a4d6d0bf841b60143f36c68ea0416ec0cdd1587a3cd0b9677e905d9a38
autonomous-ai
99.6 × 64 mm49 parts2LMIT5
Backplane
Queens-Rocket-Engineering-Team
69.5 × 119 mm8 parts2LNo license3
Kicker V1
Gamu2124
73.1 × 30.3 mm20 parts4LNo license1
ESP32Esp32 minimal
glovepost
34.2 × 26.8 mm19 parts2LMIT1
Hall Effect Sensor
Lafayette-Motorsports
34.9 × 46 mm6 parts2LNo license1
ESP32Only c3 ground remaining
PNT2110
79.8 × 79.8 mm72 parts2LNo license0
ESP32Water Level Monitor and Control
jsitech4
88.6 × 88.7 mm51 parts2LNo license0
PCB-0008-B sbuck-5v3a
ihsan-sa
50 × 40 mm33 parts4LMIT0
STM32Screen
sean618
56 × 54 mm22 parts2LMIT0
Adafruit LSM6DSOX
dcuccia
25.4 × 17.8 mm19 parts2LMIT0
Current sensor pcb min
aaronds
35 × 39.1 mm13 parts2LNo license0
BNO055 circuit i2C version 3
Olin-Rocketry
13.8 × 13.3 mm13 parts2LNo license0
AVR/ArduinoIDM-RoomSensor-Classic
Xerolux
38 × 28 mm6 parts2LCERN-OHL-S-2.00
Temperature controlled dc fan
JKCadilo14-CpE
71.1 × 30.5 mm5 parts2LMIT0- schematic only · 234 partsSTM32
Fx3u 24mr
eddyem
234 parts2LNo license206 
ESP32ESP-WROOM-02 Breakout
27.9 × 25.4 mm4 parts2LApache-2.055
2040-centered-4x-12deg
47 × 48 mm5 parts2LCustom license53
ESP32Feather Duo
40 × 40 mm39 parts4LNo license31
ESP32ESP32 laptop strip.kicad
224.5 × 25 mm12 parts2LNo license19
Wio-SX1262 for XIAO nRF52840
17.8 × 21.4 mm11 parts2LCustom license12
PQ PL1
40 × 40 mm5 parts2LNo license9
Pwr key addon
11.4 × 10.9 mm6 parts2LApache-2.06- schematic only · 157 parts
EPS Scales RevB
157 parts2LNo license6 
RP2040/RP2350Fa2be566e90b440c630a8ae853494758887e4ef24ceae603de02d5987b2b1543
99.6 × 64 mm49 parts2LMIT5
Symm60HE-Daughterboard
Mokeded
50 × 31 mm36 parts2LGPL-3.02
Browse boards by part
AMS1117-3.3 1287USBLC6-2SC6 1056RP2040 725W25Q128JVS 444AP2112K-3.3 408TL072 347ESP32-S3-WROOM-1 324TL074 308CH340C 290L7805 29074HC595 267USBLC6-2P6 260Pico 258LM358 237AP2112K-3.3TRG1 22474LS04 207ESP32-WROOM-32 203Arduino_Nano_v3.x 202LM7805_TO220 20174LS245 18474LS138 176SRV05-4 17674LS08 17574LS32 175