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Amazon.com: waveshare Industrial 6-CH Relay Module for Raspberry Pi Zero/Zero W/Zero WH, RS485/CAN Half-Duplex Communication UART Control, Auto RX/TX Switch,MCP2515 + SN65HVD230 Solution SPI Control : Electronics
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how to plug devices using same pins on raspberry pi at the same time? / Raspberry Pi 4 Model B - Stack Overflow
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