| Qty | Description | Online Reference |
|---|---|---|
| 3 | Pro-Grade SPST Momentary Foot Switch - Normally Open | https://lovemyswitches.com/pro-grade-spst-momentary-foot-switch-normally-open-soft-touch-solder-lug/ |
| 1 | RGB backlight negative LCD 20x4 | https://www.adafruit.com/product/498#description |
| 1 | USB C Round Panel Mount Extension Cable - 30cm | https://www.adafruit.com/product/4218 |
| 1 | Pimoroni Pico HAT Hacker | https://www.adafruit.com/product/3577 |
| 1 | Stacking Header for Pi | https://www.adafruit.com/product/1979 |
| 8 | PAN PHILLIPS SCREW, M2.5 X 4.5 T | https://www.digikey.ca/en/products/detail/essentra-components/50M025045P008/11638585 |
| 1 | Pisound | https://blokas.io/pisound/ |
| 1 | Raspberry Pi 4 Model B/4GB + SD + Power + heatsinks | https://www.buyapi.ca/product/raspberry-pi-4-model-b-4gb/ |
| 1 | Male to Female GPIO Ribbon Cable | https://www.buyapi.ca/product/male-to-female-gpio-ribbon-cable/ |
| 1 | 3D print filament - PLA 1.75mm | https://filaments.ca/ |
| Raspberry Pi 4B | LCD | pot | switch 1 | switch 2 | switch 3 |
|---|---|---|---|---|---|
| Pin 1, 3v3 | |||||
| Pin 2, 5V | 2 | right | |||
| Pin 3, I2C.1_SDA | |||||
| Pin 4, 5V | |||||
| Pin 5, I2C.1_SCL | |||||
| Pin 6, Ground | 1, 5, 16 | left | left | left | left |
| Pin 7, GPIO 4 | |||||
| Pin 8, GPIO 14 | |||||
| Pin 9, Ground | |||||
| Pin 10, GPIO 15 | 6 | ||||
| Pin 11, GPIO 17 | 14 | ||||
| Pin 12, GPIO 18 | |||||
| Pin 13, GPIO 27 | right | ||||
| Pin 14, Ground | |||||
| Pin 15, GPIO 22 | right | ||||
| Pin 16, GPIO 23 | 13 | ||||
| Pin 17, 3v3 | 15 | ||||
| Pin 18, GPIO 24 | 12 | ||||
| Pin 19, GPIO 10 | |||||
| Pin 20, Ground | |||||
| Pin 21, GPIO 9 | |||||
| Pin 22, GPIO 25 | 11 | ||||
| Pin 23, GPIO 11 | |||||
| Pin 24, GPIO 8 | |||||
| Pin 25, Ground | |||||
| Pin 26, GPIO 7 | 4 | ||||
| Pin 27, I2C.0_SDA | |||||
| Pin 28, I2C.0_SCL | |||||
| Pin 29, GPIO 5 | right | ||||
| Pin 30, Ground | |||||
| Pin 31, GPIO 6 | |||||
| Pin 32, GPIO 12 | |||||
| Pin 33, GPIO 13 | |||||
| Pin 34, Ground | |||||
| Pin 35, GPIO 19 | |||||
| Pin 36, GPIO 16 | |||||
| Pin 37, GPIO 26 | |||||
| Pin 38, GPIO 20 | |||||
| Pin 39, Ground | |||||
| Pin 40, GPIO 21 | |||||
| 3 | middle |
- The audio interface is connected by the ribbon cable
| Raspberry Pi 4B | LCD | pot | switch 1 | switch 2 | switch 3 | PiSound | Color |
|---|---|---|---|---|---|---|---|
| Pin 1, 3v3 | 15 | orange | |||||
| Pin 2, 5V | 2 | right | red | ||||
| Pin 3, GPIO 2 | 6 | yellow | |||||
| Pin 4, 5V | |||||||
| Pin 5, GPIO 3 | 11 | green | |||||
| Pin 6, Ground | 1, 5, 16 | left | black | ||||
| Pin 7, GPIO 4 | 14 | blue | |||||
| Pin 8, GPIO 14 | 12 | purple | |||||
| Pin 9, Ground | |||||||
| Pin 10, GPIO 15 | |||||||
| Pin 11, GPIO 17 | X | ||||||
| Pin 12, GPIO 18 | X | ||||||
| Pin 13, GPIO 27 | right | white | |||||
| Pin 14, Ground | |||||||
| Pin 15, GPIO 22 | right | gray | |||||
| Pin 16, GPIO 23 | 13 | brown | |||||
| Pin 17, 3v3 | |||||||
| Pin 18, GPIO 24 | X | ||||||
| Pin 19, GPIO 10 | X | ||||||
| Pin 20, Ground | left | left | left | black | |||
| Pin 21, GPIO 9 | X | ||||||
| Pin 22, GPIO 25 | X | ||||||
| Pin 23, GPIO 11 | X | ||||||
| Pin 24, GPIO 8 | X | ||||||
| Pin 25, Ground | |||||||
| Pin 26, GPIO 7 | 4 | white | |||||
| Pin 27, GPIO 0 | |||||||
| Pin 28, GPIO 1 | |||||||
| Pin 29, GPIO 5 | right | blue | |||||
| Pin 30, Ground | |||||||
| Pin 31, GPIO 6 | X | ||||||
| Pin 32, GPIO 12 | X | ||||||
| Pin 33, GPIO 13 | X | ||||||
| Pin 34, Ground | |||||||
| Pin 35, GPIO 19 | X | ||||||
| Pin 36, GPIO 16 | X | ||||||
| Pin 37, GPIO 26 | X | ||||||
| Pin 38, GPIO 20 | X | ||||||
| Pin 39, Ground | |||||||
| Pin 40, GPIO 21 | X | ||||||
| 3 | middle | gray |
- The audio interface is connected by the ribbon cable
Start by 3D printing the enclosure and arrange the parts:
Solder the long female header pins to the Pimoroni Pico HAT Hacker:
Solder the wires according to the table above.
Also, solder the potentiometer used to control the LCD backlight intensity:
Solder the wires on the LCD:
Solder the footswitches and prepare to assemble everything together:
The riboon cable needs the cape off to fit the enclosure:
The Raspberry Pi can now be secured with M2.5 screws. The ribbon cable and the Hat Hacker are connected as shown below:
The LCD and Pisound can be secured with screws now.
Close the enclosure and we're done.
