firmware/hardware/README.md
Peter D. Gray b0424125f9 edits
2026-03-16 13:48:28 -04:00

1.4 KiB

Coldcard Hardware Details

This directory contains enough information for you to be able to build your own Coldcard from off-the-shelf parts. We are sharing this information for the benefit of security researchers who wish to analyse the Coldcard more completely.

Schematic

schematic-q1d.png

This is the Q rev D schematic.

schematic-mark5f.png

This is the Mark4 rev F schematic.

schematic-mark4d.png

This is the Mark4 rev D schematic.

schematic-mark3b.png

This is the Mark3 rev B schematic.

BOM - Bill of Materials

The parts used in the Coldcard are detailed in these spreadsheets. Most of them could be bought on Digikey, but some are direct from suppliers.

  • BOM for Q rev D: bom-q1d.xlsx
  • BOM for Mk5 rev F: bom-mark5f.xlsx
  • BOM for Mk4 rev D: bom-mark4d.xlsx
  • BOM for Mk3 rev B: bom-mark3b.xlsx

Not included are these minor bits:

  • the plastic case (custom)
  • the secure bag (with barcode serial number)
  • pin-recovery card

Important

  • No promises that these files are 100% current because we constantly make quality improvements.
  • Copyright of these files, and all design elements of the Coldcard remain with Coinkite Inc.
  • This information is for research and testing purposes only—no warranties.
  • Coinkite does NOT grant license of this information for comercial use.