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Raspberry Pi Pico-CAN-A User Guide


CAN Bus Module For Raspberry Pi Pico, Enabling Long-Range Communication Through UART.


  • Standard Raspberry Pi Pico header, supports Raspberry Pi Pico series.
  • Incorporates E810-TTL-CAN01 module, UART to CAN bus conversion.
  • Three conversion methods: transparent conversion, transparent conversion with identification, and protocol mode conversion.
  • Provide a complete supporting manual (example programs such as Raspberry Pi Pico C/C++ and MicroPython).


  • Operating voltage: 3.3V
  • CAN transceiver: E810-TTL-CAN01
  • Communication: UART
  • Baudrate: 300~921,600 bps
  • Dimension: 58 × 25mm





Pico Quick Start

Download Firmware

  • MicroPython Firmware Download

MicroPython Firmware Download.gif

  • C_Blink Firmware Download

C Blink Download.gif

Hardware connection

Please take care of the direction when you connect Pico, an USB port is printed to indicate. You can also check the pin of Pico and the LCD board when connecting.
You can connect the display according to the table.

CAN BoardPicoDescription
VCCVSYS5V Power Input
GP0TXD0UART TX (default)
GP1RXD 0UART RX (default)
GP2CFGCAN mode switch
GP3RESETCAN module reset
GP4TXD 0UART TX (optional)
G{5RXD 0UART RX (optional)

Setup environment

Please refer to Raspberry Pi's guide:https://www.raspberrypi.org/documentation/pico/getting-started/

Download Demo codes

sudo apt-get install p7zip-full
cd ~
sudo wget  https://www.waveshare.com/w/upload/d/d8/Pico-CAN-A-Code.7z
7z x Pico_Pico-CAN-A-Code.7z -o./Pico-CAN-A-Code.7z

Run the Demo codes

This guide is based on Raspberry Pi.

C examples

...Waiting for update

Python codes

Use in Windows

  • 1. Press and hold the BOOTSET button on the Pico board, connect the pico to the USB port of the computer through the Micro USB cable, and release the button after the computer recognizes a removable hard disk (RPI-RP2).
  • 2. Copy the rp2-pico-20210418-v1.15.uf2 file in the python directory to the recognized removable disk (RPI-RP2).
  • 3. Open Thonny IDE (Note: Use the latest version of Thonny, otherwise there is no Pico support package, the latest version under Windows is v3.3.3).
  • 4. Click Tools->Settings->Interpreter, select Pico and the corresponding port as shown in the figure.


  • 5. File -> Open -> the corresponding .py file, click to run, as shown in the following figure:

This demo provides a simple program...

Expected result

You need to connect the Pico-CAN-A to another CAN adapter (3.3V, A to A, and B to B), the demo codes will test to send data SENDTESTABCD1234 and print data received.

Price: $20.89
Part Number: Pico-CAN-A
Brand: Spotpear
SKU: 0101556