Procedure for making an air pollution detector

Answer 1

Materials needed:
1. Arduino Uno or any other microcontroller
2. Air quality sensor (e.g. MQ-135)
3. Jumper wires
4. Breadboard
5. Power source (e.g. 9V battery or USB cable)

Steps:
1. Connect the air quality sensor to the microcontroller using jumper wires. Make sure to connect the Vcc pin to 5V, GND pin to GND, and the analog output pin to an analog pin on the microcontroller.

2. Connect the microcontroller to a power source, either a 9V battery or through a USB cable connected to a computer or power adapter.

3. Upload the code to the microcontroller. You can use Arduino IDE to write and upload the code. Here's a sample code for the air pollution detector:

```
int sensorPin = A0; // analog pin connected to the sensor
int airQuality;

void setup() {
Serial.begin(9600); // initialize serial communication
}

void loop() {
airQuality = analogRead(sensorPin); // read sensor value
Serial.print("Air quality: ");
Serial.println(airQuality);
delay(1000); // delay for 1 second
}
```

4. Open the serial monitor in Arduino IDE to view the sensor readings. The readings will indicate the air quality level detected by the sensor.

5. Place the air pollution detector in an area where you want to monitor air quality. The sensor will continuously measure the concentration of pollutants in the air and provide real-time data.

6. You can further enhance the functionality of the air pollution detector by adding a display, buzzer, or connecting it to a Wi-Fi module for remote monitoring and alerts.