In the latest system reference manual, the external DC power
requirement is described as:
"8.2.2 Wall Supply Source
A wall supply can be used to provide power to the board. A regulated
5V DC supply of at
least 500mA is required. It needs to have a 2.1mm plug with a center
hot configuration."
I would expect that to mean a center-positive power supply connector.
However, the power input section schematic shows the input jack wired
to feed +5V from the *sleeve*, not the center (tip) conductor, and the
tip grounded.
Does the board then require a 5V wall supply with *negative* center
pin?
By the way, is there an email address for board support from the
vendor?
Dave Bell