okay...
for conversation sake. if i were to connect a 24v battery to the LED drivers, totally acceptable to the drivers spec's. what would be the best way to power the UNO, as 24v is outside the spec for the UNO?
if you say a second battery, perfect, that what i have, but there is no shared connection to the batteries, and when i share a connection between batteries, it stops working. could do something as simple as connect the (-) of the two batteries, with out fear of blowing up the UNO?
thanks