Jiminy wrote: I don't know how to take or transfer a screenshot from the Nexus to my windows desktop but I'll get some help this evening when a family member more experienced in Android devices arrives for the Thanksgiving holiday.
When stopped (better, the voltages don't varies), press in the marked area.
You must see a message as "Printscreen OK" or similar. A file named "pict_YYMMDD_HHMMSS.png" is created (i.e. pict_131126_163010.png) and stored.
Connect the Nexus with the PC with the USB cable. First time it delayed a bit, have to load the drivers. In a minute or so you can open your file explorer as usual, and you will see the Nexus as an external unit (as a USB pen). Find the directory "BT_CAN" and copy your pic.
Good luck, and keep us informed!