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Microbit disco lights

Discussion in 'Microcontrollers, Programming and IoT' started by rhubarbdog, May 19, 2018.

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  1. rhubarbdog


    May 15, 2018
    Is there a simple circuit which converts a tone 'heard' by a microphone into an analogue voltage. The microbit will take analogue voltages between 0v and 3.3v DC.
    Alternatively if an i2c device exists that would make the solution neat i can write a micropython class for devices. Microbit also supports the uart protocol and the spi protocol

    Thanks in advance
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    Nov 17, 2011
    That's what a microphone does: convert acustic waves into an electric signal. You'll have to amplify the signal by a microphone (pre-) amplifier to get a useful signal level. What kind of amplifier you use depends on the type of microphone.
    You can buy microphone+amplifier as a kit.

    Or, as you suggested, use an I²C based Mems microphone.
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