Ks0131 keyestudio EASY plug Analog Gas Sensor

EASY plug Analog Gas Sensor

Introduction

This analog gas sensor - MQ2 is used in gas leakage detecting equipment in consumer electronics and industrial markets. This sensor is suitable for detecting LPG, I-butane, propane, methane, alcohol, Hydrogen and smoke. It has high sensitivity and quick response. In addition, the sensitivity can be adjusted by the potentiometer.
Note: this module needs to be used together with EASY plug control board.

Specification

• Interface: Easy plug
• Power supply: 5V
• Interface type: Digital and Analog
• Wide detecting scope
• Quick response and High sensitivity
• Simple drive circuit
• Stable and long lifespan
• Size: 56*20mm
• Weight: 10g

Connection Diagram

Sample Code

int gas_din=18;
int gas_ain=A5;
int led=13;
int ad_value;
void setup()
{
  pinMode(led,OUTPUT);
  pinMode(gas_din,INPUT);
  pinMode(gas_ain,INPUT);
  Serial.begin(9600);
}
void loop()
{ 
  ad_value=analogRead(gas_ain);
  if(digitalRead(gas_din)==LOW)
  { 
    digitalWrite(led,HIGH);
    Serial.println("Gas leakage");
    Serial.println(ad_value);
  }
  else
  {
    digitalWrite(led,LOW);
Serial.println("Gas not leak");
Serial.println(ad_value);
  }
  delay(500);
}