I have 5 new mini board kits available to those who wish to buy and test. they work with the pi and odroid. they have been tested. this is a basic board meant to just be basic repeater with temp module on unit and the i2c interface.
you can view it here …..
https://kb3vgw.wordpress.com/2016/10/13/board/
kits are 50 bucks and thts including s&h . email me at k3vgw@gmail.com and will tell you how to make payment .