I have a bunch of zwave devices, and the odd bluetooh and some DHT sensors attached to a raspberry pi.
The main issue I have with the zwave sensors (https://aeotec.com/z-wave-sensor) apart from price is that you need a USB wall plug + cable to power it (CBA with batter powered - the bluetooth ones are, and it's a PITA to change batteries).
My pi one is great, just does it's job...but also suffers the same problem on needing a wall plug.
So I've started looking at then D1 Minis, cheap as chips. But I'm trying to figure out a way of getting an enclosure that will inlcude a power plug, so I'm envisaging, a small USB power supply (sort of this formfactor: http://www.harveynorman.co.nz/apple-computers/apple-accessories/apple-5w-usb-power-adapter.html - though annoyingly the usb is on the face, the side would be more compact).
Thoughts? Better suggestions?