Tuesday, June 28, 2011

How to make a SWCAN adapter

Here's what goes into a modified CAN adapter to make it SWCAN.

Finished product

Sandwich the boards together with sufficient insulation to prevent shorts.

Bottom side of the board. The SWCAN wire is shown extending out to the left.

Top of the board. Using a new solder tip and it had been a while, so don't hate :)

Another topside

Bill of materials

  • 1x Bluetooth OBD adapter with regular CAN support (uses MCP2551 CAN transceiver).
  • 1x 8056 SWCAN transceiver.
  • some small wires (I cut open a USB cable to get the thin green and white wires shown).
  • Discrete parts list from mouser.com (this is the BOM that I order to make more of these).
  • Electroboards SOIC-8 breakout-board. These are about $1 each. Highly recommended.

1 comment:

  1. Looks great, I assume you just connected the green/white SWCAN wires to pin 1 and 5? I can't wait to get a completed one to have some fun with my car's electronics :)