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 had a few problems with the PWM part mainly because the ...

This is an easy tutorial showing how you can control the brightness of an LED or adjust the speed of a DC fan using Arduino Board, a small BC547 transistor and a potentiometer. In my example the whole ...

Contrary to popular belief, fan speed settings aren’t always correct from the factory. It’s been a long-standing assumption that you should use the high-speed tap for cooling and low-speed tap for ...