I am going to use DS18B20 temperature sensors.
concerning the shield - i received it assembled with arduino mega board and touch screen and it is pre-programed to dim leds, control temperature etc. problem is that i have 5 lamps and only 1 pin ready to connect the sensor? I could put a sensor in one of 5 lamps but it might be that for some reason 5 lamps produce different amount of heat.