Build Instructions

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• 1

  Wiring Diagram

  AMB21 / AMB22 Wiring Diagram:

  Connect the 3.5mm connector to the RTL8722 board following the diagram.

  AMB23 Wiring Diagram:

  As RTL8722DM MINI has a built-in microphone on the board, there is no need for any external microphone.

• 2

  Compile and Upload example

  Open the example, “Files” -> “Examples” -> “AmebaAudioCodec” -> “OutputSineWave”.

  Upload the code and press the reset button on Ameba once the upload is finished.
  Connect a pair of wired headphones to the 3.5mm audio jack and you should hear the generate single sinusoidal tone.

• 3

  More References

  Please visit the following websites for more details about the board & other examples:

  • AmebaIoT Official Website: https://www.amebaiot.com/en/
  • AmebaIoT Official FB Page: https://www.facebook.com/groups/AmebaIoT
  • AmebaIoT Forum: https://forum.amebaiot.com/

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