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Arduino RS485 Shield (RJ45, bus-powered)

awesome Raspberry PI 2 - OpenHAB - Arduino - RS485 Check more at http://gadgetsnetworks.com/raspberry-pi-2-openhab-arduino-rs485/

RS485 Communication Between Arduino Mega & Arduino ProMini, Leonardo etc

pin 6

serial parallel M-bus to RS485 arduino serial

Arduino Modbus RTU - Control HMI via RS485 - YouTube

TTL to RS485 RS-485 Module MAX485 DMX Arduino PI+JUMPER CABLES

RS485 Module MAX485 TTL RS-485 for Arduino, Raspberry PI, DIY SHIELD