MKR CAN Shield
The MKR CAN Shield is a great addon for MKR family boards, and allows you to connect to a CAN (Controller Area Network) bus, widely used in the automotive industry.
To use this shield, you can refer to the documentation of the CAN library.
The MKR CAN Shield is based on the MCP2515 CAN controller and the TJA1049 CAN transceiver. Mounting this shield on a MKR family board allows you to connect to existing CAN systems. It also features the TPS54232 buck converter from Texas Instruments.
The MCP2515 from Microchip is a stand-alone Controller Area Network (CAN) controller, that can transmit and receive data frames. It interfaces with MCUs via SPI.