Audio Amplifier Circuit

The Amplifier Circuit is the original version of the Dreidel Game and works well with the MatrixPortal M4.

Wiring Connections

STEMMA Speaker

  • Speaker GND to MatrixPortal M4 GND
  • Speaker Power to MatrixPortal M4 Power
  • Speaker SIG to MatrixPortal M4 A0

IR Breakbeam Sensor

  • Receiver black wire to MatrixPortal M4 GND
  • Receiver red wire to MatrixPortal M4 3V
  • Receiver yellow wire to MatrixPortal M4 A1
  • Transmitter black wire to MatrixPortal M4 GND
  • Transmitter red wire to MatrixPortal M4 3V

Servo

  • Servo black wire to MatrixPortal M4 GND
  • Servo red wire to MatrixPortal M4 5V
  • Servo yellow wire to MatrixPortal M4 A4

I2S Audio Circuit

If you need I2S Audio, you can build this version of the circuit.

MAX98357 I2S Amplifier

  • Speaker black wire to MAX98357 output negative
  • Speaker red wire to MAX98357 output positive
  • MAX98357 GND to MatrixPortal M4 GND
  • MAX98357 Vin to MatrixPortal M4 3V
  • MAX98357 DIN to MatrixPortal M4 TX
  • MAX98357 BCLK to MatrixPortal M4 A2
  • MAX98357 LRC to MatrixPortal M4 A3

IR Breakbeam Sensor

  • Receiver black wire to MatrixPortal M4 GND
  • Receiver red wire to MatrixPortal M4 3V
  • Receiver yellow wire to MatrixPortal M4 A1
  • Transmitter black wire to MatrixPortal M4 GND
  • Transmitter red wire to MatrixPortal M4 3V

Servo

  • Servo black wire to MatrixPortal M4 GND
  • Servo red wire to MatrixPortal M4 5V
  • Servo yellow wire to MatrixPortal M4 A4

This guide was first published on Nov 16, 2021. It was last updated on Apr 09, 2024.

This page (Circuit Diagram) was last updated on Mar 08, 2024.

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