Is there a way to toggle the fan that connects to the 12V out on the arduino board? (The one that physically blows on the board to keep it cool). When I first purchased the R2 the lights stopped working and the warranty dept made me a LED Strip that plugs into that outlet to replace the broken lights. The problem I've noticed is it interferes with the IR sensor significantly (doubles the std deviation and the range when tested with M48--std dev goes from about .05 to .1 and range from .19 to .4 when those lights are off and on respectively). Right now I have to physically unplug the lights when I want high precision measurements.