Nice method and analysis. The temp sensor 3 pin devices are simple and cheap but good for 0.5 deg C precision or nearly a full degree in human measure.

I made this project because I wanted a way to automatically control the speed of a DC fan according to the temperature read by a LM35 sensor. I ... 9540/arduino-fan-speed-controlled-temperature/ ...

Posted in Arduino Hacks, Cellphone Hacks, home hacks, Microcontrollers Tagged freeduino, gsm, sms, sms messages, temperature, temperature-control Post navigation ← Zero Gravity (sort Of) On A Budget ...

Most already come complete with the UNO board and a bunch of components like LEDs, a temperature sensor, a DC motor, a servo motor, and an LCD module. Then, there's the matter of the power supply.

So if you want to modify it to add more fans, change the message on the LCD, or use a different temperature sensor, you can easily give it a go even if you're a beginner at Arduino coding.

The Arduino compatible Pax Instruments T400 Temperature Datalogger is now available to purchase priced at $175 from Adafruit. If you liked this you might also be interested in building an Arduino ...