I have been playing with this sensor for a while and found it quite stable. It doesn't even require the lens listed as "required" at vendors side and it has angle tolerance more than specified in the datasheet. In fact it has tolerance up to %30-40 in the specified wavelength response and can be driven from a distance of 2-3 meters if diode is pumped with just a bit higher power. Assuming voltage levels matched, I wonder if it can be driven by Actel's IGLOO Nano Low Power FPGA's (AGLN010 for ex).I don't see why not but it feels like I am missing a point or more. Any comment or guidance would be appreciated. Have a nice day. --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .