RS-485 Serial Communication between Raspberry Pi and Arduino UNO
2-Channel RS485 Module For Raspberry Pi Pico, SP3485 Transceiver, UART To RS485 | Pico-2CH-RS485
RS422 / RS485 Serial HAT Standard
RS485 CAN HAT for Raspberry Pi Zero W WH/4B/3B+/3B/2B/B+/A+, Onboard CAN Controller MCP2515 via SPI Interface, Transceiver SN65HVD230 and SP3485, Allow Stable Long-Distance Communication : Amazon.co.uk: Computers & Accessories