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A project log for Low-power stand-alone radio push-button

The journey towards a tiny, battery operated, radio-capable push button for my openHAB system

charlieCharlie 03/02/2016 at 00:110 Comments

In the project description I wrote that I wanted the button to be "portable, small, cheap and able to communicate with openHAB over radio". It means that it must be battery-operated, low-power, rechargeable, with the least possible number of components and with a way of communicating via radio.

I will probably end up designing a PCB for it so if the PCB is as small as possible it wouldn't hurt.

My goal in terms of cost per unit is around 5$/€.