In this tutorial, we want to implement a Modbus RTU master and a slave that can communicate with each other. Therefore, we need two Arduino Uno R4s (the good old Rev3 will also work), two RS485 ...

How to mount an Arduino and an RS485 shield (or any other shield) in a cabinet on a DIN rail. This small project will show you how to mount an Arduino together with a RS485 shield in a cabinet on a ...