by zmc » Thu Jul 03, 2014 10:14 pm
I know this thread is a bit old, but I can't seem to find good information on this. I'm a noob so if someone in the know can correct me or confirm this information, please chime in.
According to this thread it should be okay to power the board using the usb port near the micro-hdmi connector for "light loads"
However, post: states that this connector (j6) was not designed to handle this amount of load, and it will fry your usb chip if used for extended periods.
According to the posts at the jumper near the barrel power connector, selects if the board is to be powered via the barrel connector or the USB port near it. Shorting the 2 pins closest to the barrel connector selects it, and shorting the 2 pins closest to the Zynq selects power via usb.
Powering the board this way does work, what I'm not sure about is the safety of this method. I hope that I didn't seriously shorten the life of the usb chip powering the board from the wrong end for a day or so. If anyone can confirm or deny this information and to what board revisions it applies to it would be excellent.