80 open source boards in Power & battery
Power supplies, battery chargers and BMS, USB-PD, buck and boost converters and solar. 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.
Display Carrier
AxxAxx
35.6 × 58.2 mm5 parts2LGPL-3.01.7k
Cube batteryboard
willem-pennings
95 × 95 mm4 parts2LGPL-3.01.1k
STM32EEZ DIB MCU r1B1
eez-open
139 × 70 mm190 partsTAPR-OHL-1.0391
Bp5-ir toy v3-rev3
DangerousPrototypes
23.8 × 38.5 mm34 parts2LMIT123
Batteryboard
pycubed
95.9 × 90.2 mm28 parts2LNo license96
BladeCore-M54E
DvidMakesThings
29.1 × 80.6 mm148 parts6LAGPL-3.082
ESP32NextTRS
apuder
145.7 × 107.8 mm93 parts2LGPL-3.074
Plate ble
ebastler
272.4 × 111.9 mm48 parts2LCC-BY-NC-4.036
Joule Thief
fishPointer
129.8 × 50.8 mm32 parts2LMIT25
Cell
atopile
92.9 × 7.9 mm63 parts4LMIT24
Impedance testboard
hb020
99.1 × 69.9 mm38 parts2LNo license19
Sisu SSE-9 debug pogo adapter
briskspirit
19.5 × 11.5 mm7 parts2LUnlicense15
Raspberry PiLamoka1-DEV-board
bearjhartjen
70 × 30 mm48 parts2LCERN-OHL-W-2.07
Unoq power shield
ramalamadingdong
53.3 × 68.6 mm49 parts4LGPL-3.04
EEZ DIB AUX-PS
230.5 × 60 mm63 parts2LTAPR-OHL-1.0391
Vpp maker rev6-ian
26.5 × 36 mm23 parts2LMIT123
PanelControls
CrashOverride85
106 × 37.8 mm40 parts2LGPL-3.0112
STM32PDNode-PDCard-4242
57.2 × 29.9 mm74 parts6LAGPL-3.082
TRS-IO-M3
134 × 74.2 mm40 parts2LGPL-3.074
Ethernet
33.2 × 17.3 mm32 parts2LMIT24
Battery Charger
PlumPot55
19.9 × 20.2 mm8 parts2LNo license15
EEZ DIB B3C
110 × 90 mm30 parts2LTAPR-OHL-1.0391
Adapter ram ddr5-1REV2
26 × 154.5 mm20 parts2LMIT123
TRS-IO-M1
118.8 × 94 mm36 parts2LGPL-3.074
LiBCM - Honda Insight BCM Replacement
doppelhub
166.8 × 31 mm73 parts4LCC-BY-SA-4.025
Solar-Panel-X-
AFS-pt
48.4 × 48.4 mm65 parts4LNo license15
STM32Battery Display
Tuskar-Marine
110 × 175.3 mm187 parts4LNo license6
Rs232-dual adapter
40 × 51 mm16 parts2LMIT123
ESP32TRSIO
93.3 × 80.6 mm33 parts2LGPL-3.074
Solar-Panel-Y+
50 × 50 mm65 parts4LNo license15
Sim rev3c
40.1 × 58.4 mm12 parts2LMIT123
Lb-80
30.6 × 21 mm7 parts2LGPL-3.074
UHP1500FanControl
190 × 11 mm17 parts2LCC-BY-SA-4.025
Solar-Panel-Z+
48.4 × 48.4 mm63 parts4LNo license15
Stemma qwiic grove gravity bog plank-1REV1
39.5 × 51 mm12 parts2LMIT123
LiBCM - Honda Insight BCM Replacement
22 × 18 mm9 parts4LCC-BY-SA-4.025