optocoupledArduinoControl.jpg
Our buds at uC Hobby have another “winner” in their “Hobby Parts for Articles” program:

Oscar Gonzalez gives us a simple tutorial for speed controlling a PC FAN and reading a LM35 temperature sensor with an Arduino microcontroller. He covers the use of an optocoupler, PWM (Pulse Width Modulation) and reading analog voltages with the Arduino. He even has a video showing the fan speed control in action.

Arduino temperature controlled PC Fan. – [via] Link

Related:

  • Cartloads o’ Arduino coverage on MAKE: Blog – Link