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  3. 2 Arduinos talk to each other over RS485

2 Arduinos talk to each other over RS485

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  • R Offline
    R Offline
    redcarpet
    wrote on last edited by
    #1

    Hello people. Try as I might, I can not find a simple example sketch for arduino-a to talk to arduino-b over serial and using RS485 ttl adapters. Surely it must be simpler than I keep hearing. Has anybody please got simple sketches for arduino-a (sender) and arduino-b (rcvr). thank you thank you thank you. pj :hugging_face:

    skywatchS 1 Reply Last reply
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    • R redcarpet

      Hello people. Try as I might, I can not find a simple example sketch for arduino-a to talk to arduino-b over serial and using RS485 ttl adapters. Surely it must be simpler than I keep hearing. Has anybody please got simple sketches for arduino-a (sender) and arduino-b (rcvr). thank you thank you thank you. pj :hugging_face:

      skywatchS Offline
      skywatchS Offline
      skywatch
      wrote on last edited by
      #2

      @redcarpet https://www.mysensors.org/build/rs485

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      • dzjrD Offline
        dzjrD Offline
        dzjr
        wrote on last edited by
        #3

        I have it up and running, you have to send the value from node A to node B directly

        Here is a topic about it

        link text

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        • K Offline
          K Offline
          kimot
          wrote on last edited by
          #4

          https://github.com/MajenkoLibraries/ICSC

          Examples are there too.

          ( MySensors uses this code for 485 transport layer too )

          Or another very simple example:

          https://circuitdigest.com/microcontroller-projects/rs485-serial-communication-between-arduino-uno-and-arduino-nano

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