Components

Solder short plug headers to the QT Py RP2040.

Solder short socket headers to the 1/4 perma proto board. Solder one stack of headers in column D, rows 9-15. Solder the other stack in column H, rows 9-15.

Solder one audio jack's sleeve pin to column C, row 6 and its tip to column C, row 2.

Solder the second audio jack's sleeve pin to column H, row 6 and its tip to column H, row 2.

Ground Rail

Solder one wire from the ground rail to column A, row 14. This will connect the QT Py RP2040's GND connection to the ground rail.

Solder one wire from the ground rail to column A, row 6. Then, a second wire from column E, row 6 to column F, row 6. This connects the audio jacks' sleeve pins to GND.

Power Rail

Solder one wire from the power rail to column A, row 15 (red wire). This connects the QT Py RP2040's 5V pin to the power rail.

Gate Out Signal

Solder a wire from column J, row 2 to column J, row 14 (green wire). This connects the gate signal audio jack's tip to the QT Py RP2040's pin A1.

The MCP4725 DAC

The MCP4725 DAC is wired to the 1/4 perma proto via its header pins. You can use the bottom plate as a guide for how long the wires need to be.

DAC Power

Solder the DAC's VIN pin to the power rail (red wire). This allows the DAC to have a 0 to 5V range.

DAC Ground

Solder the DAC's GND pin to the ground rail (black wire).

DAC I2C

Solder the DAC's SCL pin to column I, row 10 (yellow wire).

Solder the DAC's SDA pin to column J, row 11 (blue wire).

DAC Output

Solder the DAC's VOUT pin to the left audio jack's tip at column A, row 2 (white wire).

And that completes the wiring!

This guide was first published on Aug 02, 2022. It was last updated on 2022-08-02 16:56:26 -0400.

This page (Wiring) was last updated on Aug 03, 2022.

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