Comma.ai Panda Board

flux

Use an 85 mm × 50 mm rectangular outline as the initial placement envelope.
Recommended setup:
  • PCB: 85 × 50 mm
  • Layers: 4
  • Corners: 3 mm radius
  • Harness connector: centered on one 50 mm edge
  • USB-C: centered on the opposite 50 mm edge
  • Board-edge clearance: ≥0.5 mm for copper; ≥1 mm preferred around automotive power/protection
  • Mounting holes: defer until the enclosure or original Red Panda measurements are available
This size should accommodate the STM32H725, three CAN-FD channels, power protection, filtering, and connectors without forcing poor placement. Treat it as a Panda-compatible prototype envelope, not an exact Red Panda mechanical reproduction; exact enclosure compatibility requires measurements or a dimensioned reference.
jonnythebard9

jonnythebard9

Use 85×50 mm and place the connectors and major components for review.

flux

I’ll set the board to 85 × 50 mm, place the harness and USB-C on opposite short edges, and arrange the MCU, power stage, and three CAN-FD channels for a pre-routing review.

flux

Set the PCB to 85 × 50 mm, applied a 4-layer stackup, and placed the harness connector and USB-C on opposite short edges. The STM32, three CAN-FD blocks, power stage, SWD, and LEDs are grouped and positioned for review; no routing was added.
  • Open item: J2’s library footprint produces 46 internal overlapping-copper errors and must be corrected before routing or fabrication.
  • Next: audit/fix J2, refine decoupling placement, then route power, USB, and CAN-FD in that order.
Fix footprint and placement
Fix J2 footprint
Refine decoupling
Show placement report
Check routing readiness
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Red Panda Compatible CAN-FD Interface thumbnail
Automotive USB-C interface based on STM32H725 with three CAN-FD channels, Red Panda-compatible firmware behavior, harness connector, power protection, and connector placement.

Layout Rules

mm

Yes

10mm

Top

deg

Properties

Pricing & Availability

Distributor

Qty 1

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$15.46–$19.69

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$2.72–$2.92

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$28.64

TME

$18.00

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$11.09–$22.32

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