Nice schematic and yes I have a voltage meter. But, while I have experience using these boards, I have no desire to become an electronics engineer and I'm not going to start poking around on the PCB. Dev boards like this should work on delivery for the market they are intended. I won't even begin on the many other issues I encountered 'Getting Started' with Onion. I will say that they have a long way to go before this is a 'stable' platform like the Pi or similar products. Still holding out.......
Waiting for some advice or RTV authorization for the Arduino Dock from the Onion team.