Datasheet

There's also some recommended accessories. They are not required but chances are you'll want them!

TRRS 4-Pole Headset - Any 'iPhone' or 'Android' compatible (but not iPhone original) should work. We tried about

10 different ones, and basically the more expensive once are more comfortable and louder but our official iPhone

headset mic did not work.

Vibrating motor - the FONA can drive this directly, just solder a mini vibrating motor disc in! (https://adafru.it/dDc)

USB console cable - the microUSB connector is for charging only, but you can wire up a console cable for direct-

connection to the module (https://adafru.it/dDd)if you want to send commands from a terminal (great for testing

and tweaking)