Circuit Diagram

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.

This guide was first published on May 18, 2016. It was last updated on May 18, 2016. This page (Circuit Diagram) was last updated on Nov 21, 2019.