[PhilBot]

Considering that the IR detector board is an input sensor (not an actuator) and it only draws 20ma at most, is there any reason why it can't be modified to run on +5V supplied by the Digital Input connector.

It just seems that this would make it much easier to hookup... getting power and providing signals with just two PWM cables (one conventional and one connected sidways on the DIO pins).

It would require modifying the board a tiny bit (by taking the somewhat suspect regulator out of the circuit and feeding the +5V directly to the output trace of the removed regulator), but this does not appear to violate any rules. As is is, some people seem to be replacing the regulator with a more robust one.

Have I missed anything that would prohibit this?

Phil.