710 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.
ESP32Temp logger
hnz1102
50 × 70 mm52 parts2LNo license5
Heartrate-DevKit-HW
ZSWatch
45 × 36.9 mm48 parts4LGPL-3.05
ESP8266Reflow Oven
La-guajolota
100 × 80 mm38 parts2LMIT5
ESP32Esp32-fan controller
merlindorin
85 × 155 mm38 parts2LMIT5
JohbGCC
8n1
125.5 × 75.1 mm29 parts2LCERN-OHL-S-2.05
CO-sensor-MQ7-breakout hardware design
SolderedElectronics
22 × 38 mm12 parts2LTAPR-OHL-1.05
RP2040/RP2350Esphome xiao base
0rax
40 × 30 mm6 parts2LCERN-OHL-S-2.05
STM32EcoApi BeeHiveMonitoring
EcoApi
90.6 × 58 mm166 parts2LGPL-3.04
Polygonus-Universal-112
FOME-Tech
160 × 121 mm120 parts4LNo license4
RP2040/RP2350Electronics
Project-Stinger
89.8 × 64 mm113 parts4LCustom license4
STM32IMpack
harrislab-brown
38 × 35.3 mm94 parts4LCC-BY-SA-4.04
ESP32WeatherV3-kernelcon2026
ZonkSec
66 × 143.3 mm82 parts2LNo license4
ESP32UWB Fly Drone
DynamicWhiteHat
40 × 61 mm75 parts2LNo license4
STM32Wearable-Air-Quality-Pendant
Circuit-Digest
32.5 × 32.5 mm46 parts2LMIT4
Main+front
pioupiou-archive
76 × 29 mm43 parts2LNo license4
RP2040/RP2350Default
pete529
14.4 × 40 mm21 parts2LMIT4
Hall-Sensor-Board
PickleWorks-Design
28.6 × 72.6 mm11 parts2LCustom license4
Dustbox
citizensense
58 × 58 mm9 parts2LNo license4
STM32ProPrj IRIS
Eugene109
92.7 × 72.5 mm244 parts4LGPL-3.03
STM32FOC KING
b264
75.2 × 99.5 mm238 parts4LNo license3
ESP32Autonomous-Garden-Rover
houseofthe051010
108 × 168 mm217 parts4LMIT3
McDapBots KiCad TIMSPM0
DavidMe03
128.3 × 158.1 mm79 parts2LNo license3
ESP32OSCD Demo
tmjnijssen
94.6 × 94.6 mm76 parts4LCERN-OHL-P-2.03
LowLoRa
SorenGilkeyJohnson
23.4 × 25.4 mm64 parts4LCERN-OHL-S-2.03
OpenSoundMeter
AGordiGuerrero
98.6 × 41.3 mm52 parts2LNo license3
VAJRA 16-ir-Sensor-Array- Advance- LFR
sarthakchikte0312
137.8 × 91.2 mm50 parts2LNo license3
Nervous-EDA
sensors-inl
26 × 40 mm46 parts2LMIT3
ESP32LASK5 V2-0
Open-Muscle
75 × 35 mm43 parts2LCERN-OHL-S-2.03
YEARLING KIT -Z
proveskit
100 × 100 mm41 parts4LCERN-OHL-W-2.03
I2C multiplexer TCA9548A
38 × 54 mm35 parts2LTAPR-OHL-1.03
RP2040/RP2350Mcu2
sadaoikebe
96.8 × 57.7 mm32 parts2LGPL-3.03
Capacitive soil sensor
22 × 109 mm25 parts2LTAPR-OHL-1.03
RP2040/RP2350Rota Pi
AmmarSyamil
90 × 94 mm16 parts2LNo license3
Sensor board temperature
ZER0-cmd
32.3 × 32.2 mm14 parts2LCERN-OHL-S-2.03
Sensor
kaievns
34.9 × 19 mm13 parts4LNo license3
Ozone sensor-MQ131-breakout hardware design
22 × 38 mm12 parts2LTAPR-OHL-1.03
Browse boards by part
AMS1117-3.3 345USBLC6-2SC6 296RP2040 224W25Q128JVS 135TL072 118CH340C 116AP2112K-3.3 103ESP32-S3-WROOM-1 97TL074 94AP2112K-3.3TRG1 82SRV05-4 73W25Q128JVSIQ 73USBLC6-2P6 70Pico 52L7805 50XC6206P332MR 50MCP73831T-2ACI/OT 49SN65HVD230 49AMS1117-5.0 48ESP32-S3-WROOM-1-N16R8 48LM393 44BME280 43DW01A 43LAN8710A-EZC(QFN32) 43