air circulation fan control device automatically

The working principle tool

The tool works with two possibilities for the first time sensor MQ-2 reading levels of carbon monoxide in the room if it exceeds 100 ppm and temperature sensor of relative air DHT-11 will read the variable temperature and relative humidity in the air inside the room exceeds 35 ° C both sensors provide data -datanya as an input to the microcontroller, at the same time the Buzzer will work to give a signal, and sends the data to the microcontroller of the data of temperature and carbon monoxide in the room which will then be displayed on the LCD, then the microcontroller will be member command to the motor driver L293 for member flow power on the blower to rotate.

Tips & Components

1. Motor Driver L298D

2. Arduino Uno

3. Carbon monoxide Sensor MQ-2

4. Bridgeboard

5. LCD 16 X 2

6. Temperature And Humidity Sensor DHT-11

7. Buzzer

8. LED

9. Potentiometer

10. Drivermotor / Fan

11. Resistor 4 ohm

draft Components

1. The series of LCD 16 x 2 TO ARDUINO

a. pin A1 to D4 LCD arduino

b. A2 pin arduino to D5 LCD

c. A3 pin arduino to D6 LCD

d. A4 pin arduino to D7 LCD

e. LCD Vss to Ground

f. LCD Vdd to Vcc + 5v

g. LCD Vo to the potentiometer

h. LCD rs to pin 6 arduino

i. LCD rw to Ground

j. E LCD to pin 5 arduino

2. The circuit sensor MQ-2

a. Vdd to Vcc + 5v

b. Pin vo A5 pin arduino

c. Pin - sensor to Ground

3. The sensor circuit DHT-11

a. Vdd to Vcc + 5v

b. Vo pin pin 7 arduino

c. Pin - sensor to Ground

4. Rangakian motor driver, LED and Buzzer

a. M1 pin to pin 4 motor driver arduino

b. M2 pin to pin 8 motor driver arduino

c. M3 pin to pin 9 motor driver arduino

d. LED + 11 pin connector to the arduino

e. Buzzer + 10 pin connector to the arduino

microcontroller

It controls the entire system work Among other process inputs temperature and humidity sensors DHT-11, displaying the results of measurements of temperature and humidity to the LCD, and the microcontroller will execute the order in accordance with the temperature and humidity of the environment at the time, there are circumstances that are read by the microcontroller are:

a. If the sensor MQ-2 indoors detect carbon monoxide levels exceeding 100 ppm will activate the blower system to suck out smoke indoors.

b. When the DHT temperature sensor 11 detects conditions in the room temperature exceeds 35 degrees Celsius, the system will activate the blower.

2. Sensor DHT-11

Flavorings used as a source of variable temperature and relative kelambaban air, and used as a source of input on the microcontroller.

3. Blower

Used to create a flow of gas such as air in the system.

.4. LCD

As a display that displays the parameters of temperature and humidity.

6. The sensor mq-2

As detecting carbon monoxide levels in the room that will be sent to microkontroler of data to be processed into a command.