Abstract:
A human way of life increasingly relies on automatic
controls. The development of control techniques that boost system
performance is the main goal of the large field of automatic control
technology. The elimination of the human operator is the distinctive
feature of automated control. The fan is one of these devices. The
majority of fans come with speed controls, and the speed is adjusted
according to the situation. Typically, a fan is run at a lower speed
when the temperature is lower and at a higher speed when the
temperature is higher. This is carried out manually by people. The
fan speed is advised to be automatically controlled in this study in
order to regulate a laptop's temperature. To automatically adjust the
fan speed, a circuit comprising a brushless DC motor, DHT11
temperature sensor, Atmega328p microcontroller, and a few other
electronic components is created and constructed. The temperature
and fan speed are shown on LCD as an extra function. The developed
system circuit is then tested several times and operated flawlessly
