DAC Wiring
The TVL320DAC3100 is wired up with I2S for digital audio, I2C for settings, power, ground, and a reset line. Make the following connections between the Metro and the DAC either on a breadboard or Perma Proto board:
- Metro 3V to DAC VIN
- Metro GND to DAC GND
- Metro SDA to DAC SDA
- Metro SCL to DAC SCL
- Metro D9 to DAC BCLK
- Metro D10 to DAC WSEL
- Metro D11 to DAC DIN
- Metro D7 to DAC RST
Some of the functionality used here (USB Host for mouse in particular) is hot off the press. You'll want to install CircuitPython 10.0.0-alpha.5 or higher on your board rather than the 9.2.7 release version mentioned in the CircuitPython Install page.
Page last edited June 13, 2025
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