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    Hissing Noise from Loudspeaker

    M5Stack Fire
    3
    4
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    • S
      scotus
      last edited by

      When I start/reset my M5Stack Fire I get an audible hissing noise. This is not the case with my M5Stack basic unit.

      It's loud enough to be annoying. Is this a fault, or a feature?

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      • S
        scotus
        last edited by

        I purchased this only a few days ago here in germany from your Partner firm Conrad, (under their own Maker Factory brand). The serial number sticker has faded badly in the 4 days since I bought it (bizzare!), but the number 0441 is still readable, if this is of any help in tracing the fault.

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        • T
          Thrasher
          last edited by

          Try to remove battery bottom and turn it on with usb power supply only (:

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          • lukasmaximusL
            lukasmaximus
            last edited by

            Due to hardware flaws, sometimes when interfacing with some of the units there is an audible hiss. Unfortunately since it is a hardware flaw the only solution is to use code to reduce the volume of the hiss.

            in Arduino it should be something like
            dacWrite(25,0)

            Python
            dac0 = machine.DAC(25)
            dac0.write(0)

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