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Serial1 of MayFly could not communicate

Home › Forums › Other Data Loggers › Serial1 of MayFly could not communicate

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    • 2022-10-30 at 10:46 PM #17417
      SPY
      Participant
        I want to communicate mayfly with satellite Modem Swarm M138. Via the serial1 port on the arduino mega2560 connected to the Swarm Modem, the sketch I built can communicate well, but when  the serial1
      • 2022-10-31 at 3:34 PM #17422
        Shannon Hicks
        Moderator
          It should work fine, assuming you’ve wired the device to the Mayfly properly (did you connect the Ground of the Mayfly to the Ground of the modem?)  What is the operating voltage and communicat
        • 2022-11-01 at 12:14 PM #17427
          SPY
          Participant
            Dear Shannon , I have already connected the GND of the Modem and GND of the Mayfly. Interfacing between Mega2560 to the Modem I have used of level converter ( 3.3V to 5 V) for TX1 and RX1 . Because th
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