Primary Pi HAT
The Primary HAT sits on top of the Raspberry Pi, allowing other boards and components to connect to the Pi through it.
Components
- Adafruit Perma-Proto HAT for Raspberry Pi A+, B+ or 2
- 4 pin female header
- 4 x 3 pin female JST connector (2 for slide potentiometers, one for filter switch board, one for noisemaker board)
- 4 pin female JST connector
- 16 pin socket (for MCP3008 chip)
- MCP3008 Analogue to Digital Convertor
- Wire
- Solder
Tools
- Wire cutter
- Craft knife
- Soldering iron
Circuit Diagram

Photos
The pictured board has some experimental / redundant connectors.


Notes
You may need to use the knife to sever some of the underlying connectors on the Perma-Proto HAT to ensure all components can fit on the board.