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