4 layers35.1 × 65 mm
Submission
chilly23/PCBGolf-master-Comma.ai
Compact PCB studies for the comma.ai PCBGolf challenge, including KiCad and EasyEDA designs, BOMs, STEP models, and routing-status reports.
243 partsMIT
2 layers
Compact PCB studies for the comma.ai PCBGolf challenge, including KiCad and EasyEDA designs, BOMs, STEP models, and routing-status reports.
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 245
- Nets
- 302
- Pads
- 1,078
- Tracks, vias
- 0, 0
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 21 Oct 2026
- Updated
- 22 Oct 2026
Overview
Pcbgolf is an open-source printed circuit board by chilly23, from the chilly23/PCBGolf-master-Comma.ai repository on GitHub, published under the MIT licence. It is a 2-layer board with 245 parts on 302 nets.
It is built around the STM32H725ZGT6, NCS20071XV53 and AP62300TWU, with the TPS25944ARVCR, USB2517-JZX and RC0402FR-0710KL among its other parts. Its parts include 125 resistors, 53 capacitors, 19 diodes, 16 ICs and 9 transistors. It belongs with the interfaces and adapters boards and the STM32 boards of this library.
Main components
12
STM32H725ZGT6
LQFP-144(20x20)-40℃~+85℃ 1.62V~3.6V 1MB 32 Bit 550MHz 564KB 97 ARM Cortex-M7 Built-in FLASH LQFP-144(20x20) Microcontrollers (MCU/MPU/SOC) ROHSSTMicroelectronicsMicrocontrollers (MCU/MPU/SOC)
NCS20071XV53
SOT-553SOT-553 Operational Amplifier ROHSonsemiOperational Amplifier
AP62300TWU
TSOT-26-40℃~+125℃ 1 155uA 3A 4.2V~18V 750kHz 763mV~7V Adjustable Buck Buck Built-in Yes TSOT-26 DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
TPS25944ARVCR
WQFN-20-EP(3x4)-40℃~+85℃ 1 2.7V~18V 200uA 220us Active Low Open Drain Yes WQFN-20-EP(3x4) Supervisor and Reset ICs ROHSTexas InstrumentsMonitors & Reset Circuits
USB2517-JZX
QFN-64-EP(9x9)1.8V、3.3V 480Mbps 7 Hub I2C Port power switch control、Internal regulator、Power-on reset、ESD Protection、Programmable signal drive USB 2.0 QFN-64-EP(9x9) USB HUB Controllers ROHSMicrochip TechnologyUSB HUB Controllers
RC0402FR-0710KL
UncategorisedUnknown makerRC0402JR-07100RL
UncategorisedUnknown makerRC0402JR-07100KL
UncategorisedUnknown makerRC0402JR-071KL
UncategorisedUnknown maker
CL21A106KAYNNNE
080510uF 25V X5R ±10% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT
AM23ESGW
SOT-23-3-40℃~+85℃ 160° 20mA 2V、2.2V 565nm、627nm 568nm、617nm 5mcd、9mcd 62.5mW、75mW Common Cathode Red, Emerald Green White Lens SOT-23-3 LED Indication - Discrete ROHSKingbrightLED Indication - Discrete
QS5K2TR
SOT-23-5-55℃~+150℃ 1.25W 1.5V 154mΩ@2.5V 175pF 2 N-Channel 25pF 2A 3.9nC@15V 30V Common source N-Channel SOT-23-5 MOSFETs ROHSROHM SemiconductorMOSFETs
README
Rev 0/README.mdThe Board
The schematic is loosely based on our panda jungle v2, a development and debugging board for comma devices and pandas. This version includes:
- 12V DC input with onboard 5V and 3.3V supplies
- Four OBD-C device ports with individually controlled power and current monitoring
- Four CAN transceivers and ignition simulation circuitry
- A USB hub and USB-C host connection
- An STM32H725 microcontroller and microSD card slot
- A push button and status LEDs
Explore in your browser with KiCanvas: PCB layout.
Schematics: Power · Microcontroller · USB & microSD · CAN · OBD-C ports
The Challenge
Your goal is to make the most compact, efficient board that retains the same interfaces and functionality as the original design. The lowest score wins.
Rules
- The bare PCB must be fully manufacturable by JLCPCB.
- It must be possible to actually assemble the PCBA.
- The assembled product must work and be usable.
- Mating connectors must remain mechanically and electrically compatible.
Prize
Lowest score on the leaderboard by October 12, 2026 wins $1,000 cash.
Submission
Submit a .zip file containing your finalized KiCad project and a STEP file of the final assembly here.
Competitive scores will be posted on the leaderboard after review. Multiple submissions allowed.
Parts
245| Qty | Value | Footprint | References |
|---|---|---|---|
| 43 | 10k | pcbgolf:0402-R | R1, R3, R11, R12, R28, R29, R100, R101, R102, R103, R104, R105, R122, R123, R124, R125 +27 |
| 29 | 100nF | pcbgolf:0402-C | C2, C4, C11, C16, C18, C22, C23, C24, C26, C27, C30, C31, C35, C36, C38, C39 +13 |
| 24 | 100 | pcbgolf:0402-R | R82, R83, R84, R85, R106, R107, R108, R109, R110, R111, R112, R113, R115, R117, R119, R121 +8 |
| 17 | 100k | pcbgolf:0402-R | R4, R5, R6, R13, R14, R15, R16, R17, R18, R19, R20, R24, R25, R52, R55, R58 +1 |
| 11 | 1k | pcbgolf:0402-R | R2, R21, R23, R90, R92, R94, R96, R114, R116, R118, R120 |
| 9 | 10uF | pcbgolf:0805-C | C1, C3, C8, C12, C13, C15, C19, C20, C21 |
| 8 | LED-CC-GREEN-RED-AM23ESG | pcbgolf:SOT23-3 | LED10, LED11, LED12, LED13, LED14, LED15, LED16, LED17 |
| 8 | NFET-DUAL-COMMON-SOURCE-QS5K2 | pcbgolf:SOT23-5 | Q2, Q3, Q4, Q5, Q6, Q7, Q8, Q9 |
| 6 | 0R | pcbgolf:0402-R | R38, R39, R40, R41, R42, R43 |
| 5 | 2k7 | pcbgolf:0402-R | R22, R62, R63, R64, R65 |
| 4 | 10u | pcbgolf:0805-C | C50, C51, C52, C53 |
| 4 | 10u | pcbgolf:0402-C | C29, C33, C34, C37 |
| 4 | 12pF | pcbgolf:0402-C | C14, C17, C28, C32 |
| 4 | 28k | pcbgolf:0402-R | R66, R67, R68, R69 |
| 4 | 33k | pcbgolf:0402-R | R70, R71, R72, R73 |
| 4 | 3k3 | pcbgolf:0402-R | R74, R75, R76, R77 |
| 4 | 60 | pcbgolf:0402-R | R46, R47, R48, R49 |
| 4 | ACT1210D_CHOKE | pcbgolf:CHOKE-3.2X2.5 | L5, L6, L7, L8 |
| 4 | CH1_PWR | pcbgolf:CHIPLED | LED6, LED7, LED8, LED9 |
| 4 | M2_BOLT | pcbgolf:M2_BOLT | BH1, BH2, BH3, BH4 |
| 4 | MCP2542FDT-E/MNY | pcbgolf:TDFN8_2X3MC_MCH | U5, U6, U7, U8 |
| 4 | NCS20071XV | pcbgolf:SOIC-8_3.9x4.9mm_P1.27mm | U9, U10, U11, U12 |
| 4 | TPS25942 | pcbgolf:WQFN20 | U13, U14, U15, U16 |
| 4 | USB-C-FEMALEGCT | pcbgolf:USB-C-FEMALE-VERT-GCT | J5, J6, J7, J8 |
| 2 | 3u3 | pcbgolf:L-1008 | L1, L2 |
| 2 | AP62300T | pcbgolf:SOT23-6 | U1, U2 |
| 2 | DNP | pcbgolf:0402-C | C6, C10 |
| 1 | 12k | pcbgolf:0402-R | R27 |
| 1 | 1M | pcbgolf:0402-R | R26 |
| 1 | 220pF | pcbgolf:0402-C | C25 |
| 1 | 24MHz | pcbgolf:XTAL-3.2X2.5 | Y2 |
| 1 | 25MHz | pcbgolf:XTAL-3.2X2.5 | Y1 |
| 1 | 2u2 | pcbgolf:0806 | L4 |
| 1 | 52k3 | pcbgolf:0402-R | R10 |
| 1 | CAN | pcbgolf:2X04 | J4 |
| 1 | CAN0 | pcbgolf:CHIPLED | LED2 |
| 1 | CAN1 | pcbgolf:CHIPLED | LED3 |
| 1 | CAN2 | pcbgolf:CHIPLED | LED4 |
| 1 | CAN3 | pcbgolf:CHIPLED | LED5 |
| 1 | CREE-RGB-CLMVC | pcbgolf:CREE-RGB-CLMVC | LED1 |
| 1 | DCBARRELSMT | pcbgolf:DCJACK_2MM_SMT | J1 |
| 1 | DIODEDB2W40100L | pcbgolf:SOD-123F | D2 |
| 1 | L-US-L2 | pcbgolf:0603-L | L3 |
| 1 | MICRO_SD-0472192001 | pcbgolf:0472192001 | J2 |
| 1 | SIS427-VI | pcbgolf:PP-1212-8 | Q1 |
| 1 | SPST-2-4PIN | pcbgolf:EVQ-Q2 | SW1 |
| 1 | STM32H725ZGTx | pcbgolf:LQFP-144_20x20mm_P0.5mm | U3 |
| 1 | TVS-BI-DO214AA | pcbgolf:DO-214AA(SMB) | D1 |
| 1 | USB-C-FEMALE | pcbgolf:DX07S024XJ1R1100 | J3 |
| 1 | USB2517 | pcbgolf:QFN64-9X9 | U4 |
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Questions
What parts does the Pcbgolf use?
245 parts, built around the STM32H725ZGT6, NCS20071XV53, AP62300TWU and TPS25944ARVCR. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Pcbgolf KiCad files?
From the chilly23/PCBGolf-master-Comma.ai repository on GitHub, at the commit this page was made from: the board is Rev 0/pcbgolf.kicad_pcb and its schematic Rev 0/pcbgolf.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Pcbgolf design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).