Hydrogen MQ-8 gas sensor Module

Gas sensor module Hydro MQ-8 is used to detect Hydro gas in the environment. High-sensitivity sensor with fast response, sensitivity adjustable by rheostat.

SPECIFICATIONS:

• Supply voltage: 3 ~ 5V DC.
• Using comparable LM393 and MQ-7 chips.
• Two types of signal output (digital and analog).
• Analog signal from 0 ~ 5V, H2 gas concentration increases, the voltage increases accordingly
• Detection range from 10 to 1000ppm.
• Power consumption: about 350mW.
• Operating temperature: -10C to 50C.
• Dimensions: 33 x 20 x 16mm.

Documentation: MQ-8

Instruction for using MQ-8 with Arduino

Connection:

Code for MQ-8 sensor:

void setup()
{
  Serial.begin(9600);
}
 
void loop()
{
  float sensorVoltage;
  float sensorValue;
 
  sensorValue = analogRead(A0);
  sensorVoltage = sensorValue/1024*5.0;
 
  Serial.print("sensor voltage = ");
  Serial.print(sensorVoltage);
  Serial.println(" V");
  delay(1000);
}