In my (simple) home automation system powered by openHAB I lack some buttons to activate lights and stuff. So I'll (try to) make one (or more).
The requirements of the product I intend to design are quite simple. It needs to be portable, small, cheap and able to communicate with openHAB over radio.
Of course I'm open to collaborations so feel free to ask to become part of this project.
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.