Step 1: Attach nano

Step 2: Solder jack and header

Solder the 2.5mm power jack and 2pin 2.54mm SIL Header to the motherboard.

Connect the 2.54 link to the header.

Step 4: Solder 4-pin socket

Solder the 4pin 2.54mm SIL socket at the far end of the motherboard

Step 5: Solder breakout board

Step 6: Connect the display

Using the 4pin 2.54mm SIL Header connect the SSD1306 OLED display breakout board to the 4-pin socket.

Next steps

The electronics are now ready for mechanical assembly of the finger clip or firmware upload. Make sure that firmware is loaded onto the nano before assembly of the finger clip.