“Both PiHut and the Pi Zero W product have given us great service. We documented it here
https://majzel.blogspot.co.uk/2017/04/raspberry-pi-to-rescue.html
thanks for reading.”
“These are excellent. Very minimalist but loads of protection for the pi. Looks great too.
The only issue is the lack of access to gpio. That could probably be fixed with a little creativity though.”