Checkin of the 2012 version
Web frontend supports more than one sensor
Extracted function for sending beacon to web
Output temperature on LCD via RS-232
Disable LCD background LED
Interrupt logic for button; Moved LCD pins to < 10, because >= 10 is SPI for Ethernet shield
Fixed delay logic (overflow)
Added second sensor, an LM35
Read VCC for use in calculation of LM35 value
Substract "calibration" value. Sensor is about 2 °C too high.
Reactivated ethernet functions. This should be it for the 2013 version of this project.
Calculate the arithmetic mean of the analog sensor