Módulo sensor qualidade do ar (MQ-135) (Ligação Easy) para Arduino
Interface: Easy plug
Product model: MQ135
Product type: Semiconductor gas sensor
Target gas: Ammonia; methylbenzene; hydrogen
Standard circuit: Loop voltage Vc ≤24V DC
Heater voltage: VH 5.0V±0.2V AC or DC
Load resistance: Adjustable RL
Size: 56*20mm
Weight: 8g
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);
}