2,573 open source boards in Dev boards & breakouts
Development boards, breakouts, shields, HATs and carrier 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.
Framework mobo lefthalf
CRImier
28 × 50 mm45 parts6LGPL-3.0253
Pe42520 breakout
loxodes
31.3 × 23.5 mm19 parts4LNo license206
STM32Project X
embeddedalpha
74.4 × 30 mm46 parts2LMIT75
ESP8266ESP-12F Breakout
vul-os
25.4 × 25.4 mm4 parts2LApache-2.055
MC33810-breakout
rusefi
78 × 50 mm35 parts2LNo license48
Feather medium
jamesmunns
31.5 × 63.5 mm15 parts2LNo license40
Carvel Breakout board as M.2 Card
efabless
22 × 22 mm11 parts4LNo license40
FPGA2019-07-07 18:25:46 fpga hat
Wren6991
65 × 56.5 mm87 parts4LApache-2.031
BM20 breadboard adapter v1
tomaskovacik
29.5 × 47.2 mm23 parts2LCustom license27
STM32F767ZI LCC Repeater
RobertPHeller
105.6 × 73.3 mm28 parts2LCC-BY-4.024
Hammond 1551G OSH4L devboard
Squantor
44 × 29 mm3 parts2LMIT24
NQSAP-PCB Flags and Jump Control
TomNisbet
102 × 96 mm29 parts2LMIT18
Qsfp to arc6
azonenberg
90 × 43 mm37 parts4LBSD-3-Clause17
7-Segment Display Module 0.36, 5 Digits
MobiFlight
61.5 × 16 mm3 parts2LNo license16
BreakoutBrdF1C
SdtElectronics
59.3 × 64.6 mm3 parts2LCERN-OHL-W-2.013
ESP32ESP32-writer7
74th
31.2 × 30.6 mm18 parts2LMIT8
MiniNDP 512 Breadboard
bkw777
157.5 × 55.9 mm9 parts2LCustom license7
XDS110 onboard prog breakout
Gregification
57.5 × 38.3 mm16 parts2LMIT5
Breakout SOT363 panel
54.7 × 50.7 mm6 parts2LMIT4
VIC 6560 Breakout
BrettHallen
23 × 64 mm3 parts2LNo license4
RP2040/RP2350Adafruit Feather RP2040
oihdesigns
67.3 × 50.2 mm38 parts2LNo license2
ESP32Dev board
rompasaurus
29 × 51.9 mm21 parts2LNo license2
Breakout 60pin EEC-IV
139.7 × 62.2 mm15 parts2LNo license2
Breakout 60pin EEC-IV
rusefillc
139.7 × 62.2 mm15 parts2LGPL-3.02
Rect 24-5 16
miniscope
16 × 24.5 mm6 parts6LCERN-OHL-S-2.02
Daughterboard post freerouting before rebalance
BoomBoxRobotics
155 × 80.6 mm104 parts2LCC0-1.01
Pwr breakout
reivax-boucoi
167.5 × 48 mm34 parts2LNo license1
AVR/ArduinoH4n2rs485
mwwhited
38.1 × 44.5 mm17 parts2LMIT1
RP2040/RP2350Nuclone pi pico direct
50 × 76.2 mm17 parts2LMIT1
Carvel Breakout board as M.2 Card
chipfoundry
22 × 22 mm11 parts4LNo license1
Labjack breakout
ograsdijk
64.8 × 125.7 mm7 parts2LNo license1
Usbc breakout
mothenjoyer69
9.8 × 9.3 mm7 parts2LMIT1
Arduino can bus shield v2.1
SamsonChau
61.1 × 53.3 mm32 parts2LNo license0
Mess-Breakout
unicab369
98 × 99.8 mm15 parts2LNo license0
Breakout 60pin EEC-IV
lanjay1
139.7 × 62.2 mm15 parts2LGPL-3.00
USB to UART
cristobalcuevas
39.4 × 19.1 mm14 parts2LNo license0
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