Hi there,

I'm an electrical engineering student looking to make a simple home project to get my head around PCB design, Altium, soldering etc. and I'm in need of some advice.

I want to build a system centred on (I think) one of the smart bond chips, a button, a coin battery, and a connection to my phone.

I want to be able to press a button connected to the DA14xxx, and make a matching android app that will register the button press. Should be simple enough right?
My big question is which chip? And are there any reference designs that I can look at for a system like this?
DA14585, DA14586, DA14682 and DA14683 all seem like good options? I don't really know how to break it down.

Thanks in advance for your help,
Matt