Hi, i will have one main unit of Arduino and 2-3 other Arduinos as sensors. I thinking what is simples way to two way communication between them on wire with max length of 10m. There will be almost no data between them but if it will goes it will be important ;). Sensor need to send one command whe…

Best protocol/way to simply connect 2-3 Arduinos to main Arduino

noiasca November 6, 2021, 3:51pm 11

if you want span 10m either use
RS232 or
RS485, for example in a Modbus RTU
Or CAN Bus
Or Ethernet

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