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    M5Dial: i2C voltage level, 3.3V or 5V?

    Arduino
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    • N
      nalom1
      last edited by

      Hi

      Does anybody know the voltage level of the I2C interface on Port A of the M5Dial?

      I want to connect a M5Dial with I2C with an Arduino Nano ESP32. Both use the ESP32-S3 which is running on 3.3V. But on the Port A connector of the M5Dial there is 5V. So I am confused.

      Can I connect both boards directly (i.e. SDA, SCL and GND), or will this damage the Nano ESP32?

      Thanks, nalom1

      robskiR 1 Reply Last reply Reply Quote 0
      • robskiR
        robski @nalom1
        last edited by

        @nalom1 this 5v and ground there is to supply sensors/units but voltage levels for gpio are 3.3

        M5StickC, M5StickCPlus, M5StickCplus2,M5GO, M5Core, M5Tough, M5Core2, M5 Demo Board, M5Dial, M5Paper, M5Atom, M5Cardputer, M5StampS3, CoreMP135, StamPLC

        N 1 Reply Last reply Reply Quote 2
        • N
          nalom1 @robski
          last edited by

          @robski Thanks a lot

          1 Reply Last reply Reply Quote 0
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