Skip to content


Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?

Latest commit


Git stats


Failed to load latest commit information.
Latest commit message
Commit time


YouTube Video PCB

A compact, USB drive shaped USB to CAN adapter, primarily intended for 3D printers running Klipper firmware.

Purchasing a PiCAN

United States


European Union


This project is licensed under GPL v3, meaning vendors are allowed to sell PiCAN PCBs without paying me. If you'd like to support the development of this and future projects please consider sponsoring me on GitHub. You can also subscribe on Patreon or YouTube.

You can also use the included gerber files to order your own from a PCB manufacturer like PCBWay or JLCPCB.


Depending on how you sourced your PiCAN, your PiCAN might already have the firmware pre-flashed (units sold by me are pre-flashed). If yours doesn't have the firmware or if you need/want to reflash it, you can follow the instructions below.

Firmware Flashing
  1. Download the firmware.
  2. Connect the PiCAN to your PC while holding down the BOOT button on the PiCAN.
  3. Download and install STM32Cube Programmer. (Do not download the latest version, it is buggy)
  4. Select USB on the selecor in top right of the program (below Not connected). Click the refresh button next to the port selector. Select USB1 and click connect.
  5. Click + next to Device Memory, and select Open File. Select the downloaded firmware file. Click Download. Firmware will be flashed.

For Klipper CAN instructions, follow the official Klipper docs.

Make sure your Raspberry Pi and your CAN devices have the GNDs connected. If they are powered from the same source, they should already be connected. If unsure use your multimeter's continuity mode to test.


I am a YouTube content creator. If you want content about this project & more, please consider subscribing to my YouTube channel.

If you feel like contributing to the development of this project and other projects like this you can sponsor me on GitHub, subscribe on Patreon or YouTube.


  • Readme files in this repo may contain Amazon Associate, Aliexpress affiliate, PCBWay affiliate links. I make a comission on qualifying purchases.
  • This project does not come with any warranty, if you choose to build/use a PCB manufactured using published files in this repository, you are doing this at your own risk!
  • If you want to sell PCBs manufactured using published files in this repository, you are allowed to, and you will not owe me any royalties. You cannot claim that I endorse the sale. You can check the license file for more information. However, if you wish to give me a share you can sponsor me on GitHub, subscribe on Patreon or YouTube.


A compact, USB drive shaped USB to CAN bus adapter







No releases published


No packages published