Electronics

Follow the circuit diagram below and reference the connections for wiring the circuit. 

Ground Splitters

Use a flex PCB to create the extra grounds needed for the buttons, LEDs and motor. 

Cut two pieces from the ground railing on the flex PCB, one piece with 7 holes and one with 3 holes as shown. 

Vibration Motor

The motor requires a resistor, diode and transistor to work, follow the diagram as shown.

Lithium Battery Charger

FONA Feather has a built-in USB battery charging circuit. Plug in a microUSB cable into the microUSB port on Fona to recharge the lipo battery using a USB adapter from a wall outlet or your computer.