Abstract:
A microcontroller is used to obtain values of physical conditions through sensors connected
to it. In the automatic lamp system required sensors to detect the light of the LDR (Light
Dependent Resistor) sensor. This is because the light intensity received by the existing LDR
sensor in the room is blocked by the wall of the house or by other objects. Then for the fan, it
can also turn on automatically when the temperature is greater than 27°c,28°C, and the fan
speed can also be adjusted. The fan may also turn off automatically when the temperature is
less than equal to 27°C,28°C it also can be used automatically fire detector and automatically
visitor counter shown in the LCD display controlling by the sensor.
Description:
The principle behind this is very simple that is to turn Manually high and to turn off the fan
when temperature is low this is achieved which increases or decreases the resistance value.
This method is innovative saves most of the time and energy contr is And this way of using
becomes inefficient when the temperature has to be monitored over long time ranges So a
new method of automatic control of fan speed using the the wastage temperature sensors.
on the fan when temperature can be achieved Conventionally used fans speed can be
controlled by using the regulators which is the old and burdensome method. Develop a
product that can control the speed of the fan based on temperature the Room . IR and photo
diode and LCD.IR sensor is continuously emits the signal and photo diode is observes.
