Restroom Privacy Mode

Mute your bodily sounds by playing random music.

A fun little project that I made in under a day.

---

Hardware

• Raspberry Pi Pico
• MAX98357 DAC + Amp (any I2S DAC should work)
• 3W Speaker
• SD Card Board
• SD Card
• 5V Power Supply
• BIG RED BUTTON!

---

Setup Process and Assembly Instructions

Software Setup

1. Flash the Raspberry Pi Pico with CircuitPython using the .uf2 file from here

2. Simply drag the .uf2 file onto the mass storage device while your Pico is in the bootloader. You can enter the bootloader by holding the BOOTSEL button.

3. A CIRCUITPY storage device should appear on your computer. Drag the code.py file from this repository onto it, and you should be good to go!

Hardware setup

DAC

RPi Pico -- MAX98357

VBUS -- Vin

GND -- GND

GP0 -- BCLK

GP1 -- LRC

GP2 -- DIN

SD Card

RPi Pico -- SD Card

3.3V -- 3.3V

GP10 -- CLK

GP11 -- MOSI

GP12 -- MISO

GP13 -- CS

GND -- GND

BIG RED BUTTON

RPi Pico -- BIG RED BUTTON

GND -- COM

GP6 -- NO

VBUS -- LED

---

Usage instructions

Press the button to play a randomly selected track from the SD card.

Hold the button to stop playback.

It is that simple!

---

Extra suggestions

You can wire the power directly to the light fixture in your restroom.