Abstract :
Cooling is a necessity for humans. In using a conventional fan, the way it works
still presses the button to turn on and adjust the speed, the way it works is still less
efficient because it still presses the button to turn on and adjust the speed. An
automatic fan is equipped with a temperature sensor and PIR sensor. The
development of fans is increasingly varied both in terms of size, position, and
function. The design of this tool consists of making the box where the components,
the layout of each component and the installation of the fan used. From the design
results obtained the fan will live when it detects motion and will die if it does not
detect motion. The fan speed is regulated through the motor driver depending on
the temperature detected by the temperature sensor. This motion detector uses a
PIR sensor and temperature detection using a DS1820 temperature sensor. This
system is also equipped with Liquid Crystal Display which is useful to provide
information about the detected temperature and fan speed.