The Perma-Proto circuit is neatly divided into two sections. The left side is a basic audio amplifier for the speaker. The right side interfaces the analog joystick to the Raspberry Pi’s digital-only GPIO. The line down the middle connects the two ground rails across the board.
This diagram shows a rectangular Pi Cobbler; we’ll actually be using a “T” cobbler. Same functionality, same pins, just a different shape than shown here.
- Do your wires and components match the layout precisely as shown? Count the number of wires and components and the spaces between them.
- Are there any cold solder joints or shorted pads on the back of the board? Now’s the time to repair them.
- Are all the wire ends trimmed?