MQ135 Air Quality
MQ135 Air Quality
MQ135 Air Quality
MQ135 Air Quality

MQ135 Air Quality Sensor

JOD6.00
Tax included

For home, environmental harmful gas detection device, suitable for ammonia, aromatic compounds, sulfur, benzene vapor, smoke and other gases harmful gas detection, gas sensors tested concentration range: 10 to 1000ppm.

  1. MQ135 sensor coupled with a simple adjustable comparator circuit using a LM393 IC.
  2. Detects Ammonia (NH3), Benzene, Sulfur, (SO2), Alcohol, CO2, Smoke and others in the air.
  3. Designed to interface to a Arduino or other micro controllers.
  4. Power: 5VDC
  5. Outputs: TTL Compatible Digital & Sensor Direct Analog
  6. 4 Pin .1in. Pitch Header pins for Power & Output
  7. LEDs for Output and Power status indication.
  8. Detection Zone: 10-300ppm

Getting started with the Air Quality Sensor (MQ-135)

Air quality check with Arduino Uno with the help of MQ135 Air Quality sensor. It is very useful in finding air quality.

Step1: Hardware required

Arduino Uno

Air Quality Sensor (MQ-135)

Step2: Connecting the Hardware

ARDUINO UNO                     MQ-135

Vcc                                                 Vcc

GND                                               GND

AO                                                    AO

CODE

Upload the code

int airquality = 0;
void setup()
{
Serial.begin(9600);

}
void loop()
{

int sensorValue = analogRead(A0);
Serial.print(“Air Quality = “);
Serial.print(sensorValue);

Serial.print(“*PPM”);
Serial.println();
delay(1000);
}

You can open up the serial monitor of Arduino for finding air quality as shown below:

When the air quality decreases, its value increases.

NOTE: IF you  get stray ‘\223’ errors The problem is with your  and  characters. Replace them with ordinary quotes, ", and you should be fine.

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