Hey David, MIR =? mid IR ?? as in PIR? UWB =? ultra wide band ?? I've been pondering a PIR "radar" for my car to help pick out them pesky pedestrians at twilight. No range info though - maybe "team it up" with the gadget in the DIY article for range info. -- Looking forward, Al Shinn "I'd be impressed by a MIR or UWB radar. Very doable, but I haven't seen one in the hobby domain yet." -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist