TEMPer temperature USB sensor (PCsensor Temper)
Original GNU/Linux utility from https://relavak.wordpress.com/2009/10/17/temper-temperature-sensor-linux-driver/
Modified to apply fixes and calibrate to my TEMPer device from DealExtreme: http://tinyurl.com/z5d9wvr
modify the Makefile to set DEFS as needed.