Quote:

i'm hoping to get one that takes power from the +/- 5v on the usb buss.




FYI there is only +5VDC available at the USB connection point.

Not to worry, though, with a bit of switching power magic in the target device, that 5V at 2A can be turned into a minus voltage if needed, even brought up to a higher voltage level than 5V at a lower current rating, of course. Oscillators 'n coils with a cap or two...


--Mac