Hi, I have a trouble, my project 3 Love-o-Meter don't works. I do it like the book and I have not an error, but when I touch the temperature sensor the LEDs don't do anything. The console shows that the ambiental temperature is -15, -16, -17 degrees Celsius, when I touch the sensor this change at -50 ºC but fastly returns at -15 ºC. And when I stop to touch the sensor the console shows -50 ºC and fastly returns at -15 ºC. I was thinking the temperature sensor was broken so I change the sensor but don't change anything. HELP! 