PiCAN is an open-source USB to CAN bus adapter, shaped like a USB drive. This form factor saves space and simplifies wiring inside your 3D printer. Comes with firmware pre-flashed so you can start using it quickly. Please make sure that your Raspberry Pi's GND is connected to your CAN bus device's GND. The male JST-XH connector and pins for the CAN bus connector are included. Comes pre-flashed so you can start using it without having to flash the firmware.