The 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 assemble the components by hand.
• The assembled product must work and be usable.

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.