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    Is the interrupt pin of MPU9250 connected to the ESP32?

    M5stack Grey
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    • S
      SpeedyG
      last edited by

      Hello,
      I am trying to get acceleration readings at a constant rate of 200 Hz. If the interrupt pin of the MPU9250 was connected to the ESP32 of the M5Stack Grey this should be straightforward however, I am struggling and haven't found much information on this topic. Therefore I would like somebody to confirm that the interrupt pin of the MPU9250 is actually connected to the ESP32 and can be used.
      Thanks for your time.
      Cheers,
      SpeedyG

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      • felmueF
        felmue
        last edited by

        Hello @SpeedyG

        my M5Stack Gray (which uses an MPU6886) did not have the interrupt connected to ESP32. I assume that is the case with your (earlier) M5Stack Gray version as well.

        That said, here is how I connected the missing interrupt wire.

        Thanks
        Felix

        GPIO translation table M5Stack / M5Core2
        Information about various M5Stack products.
        Code examples

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        • S
          SpeedyG
          last edited by

          Hello Felix,

          thanks for the info on your M5Stack tuning. I opened the case and managed to get to the MPU9250 however, I am quite sure that I would burn something considering the tools I have. I took a photo of the MPU9250 with the 1.5mm Allen key next to it just to give an impression of size.
          0_1619535245194_WIN_20210427_15_28_44_Pro.jpg I have purchased some ADXL355Z and will try a "conventional" solution. BTW, to open the case I followed the instructions given here (https://forum.m5stack.com/topic/257/replace-cracked-screen/6).

          Cheers,

          SpeedyG

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