Solder each step switch to a step switch breakout.

Solder headers to each end of the step switch breakouts.

Two 2x8 IDC breakout helpers are soldered in the center of the Perma-Proto to plug into the Fruit Jam. The first pin on the first header is inserted into column 8. The first pin on the second header is inserted into column 16.

Ground

Cut and splice six pieces of black wire. These wires will be connected to ground. Insert and solder them into these locations on the Perma-Proto:

• A2 to the bottom ground rail
• A6 to the bottom ground rail
• A10 to the bottom ground rail
• A25 to the bottom ground rail
• A29 to the bottom ground rail
• J10 to the top ground rail

3.3V

Cut and splice one piece of red wire. This will carry 3.3V to the PDM mic. Insert and solder from J9 to the top positive rail.

Step Switch Input and LED+

Cut and splice two pieces of wire to connect the button and LED input on the first step switch.

• B3 to G11 (blue wire, normally open pin)
• A5 to G12 (purple wire, LED+ pin)

Cut and splice two pieces of wire to connect the button and LED input on the second step switch.

• B26 to G13 (green wire, normally open pin)
• B28 to G14 (orange wire, LED+ pin)

Insert the step switches into the Perma-Proto. The first switch will have its top common pin in I2 and its bottom common pin in C2. The second switch will have its top common pin in I25 and its bottom common pin in C25. Solder them in place.

Cut off the wire ends of a STEMMA QT cable. Splice the wires.

Solder the STEMMA QT cable to the Perma-Proto board. This cable will plug into the PDM mic.

• STEMMA QT positive to the top positive rail (red wire)
• STEMMA QT ground to the top negative rail (black wire)
• STEMMA QT clock to I16 (yellow wire)
• STEMMA QT data to I17 (blue wire)

Cut and splice the wire ends of a 3-pin JST-PH cable.

Solder the JST-PH cable to the potentiometer.

• JST-PH ground to potentiometer ground (black wire)
• JST-PH data to potentiometer wiper (white wire)
• JST-PH positive to potentiometer positive (red wire)