Ks0041 keyestudio Analog Alcohol Sensor

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Introduction

This analog gas sensor - MQ3 is suitable for detecting alcohol. It can be used in a breath analyzer.
It has good selectivity because it has higher sensitivity to alcohol and lower sensitivity to Benzine.
The sensitivity can be adjusted by rotating the potentiometer.

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Specification

  • Power Supply: 5V
  • Interface Type: Analog
  • Quick response and High sensitivity
  • Simple drive circuit
  • Stable and long service life


Connection Diagram


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Sample Code

///Arduino Sample Code
void setup()
{
  Serial.begin(9600); //Set serial baud rate to 9600 bps
}
void loop()
{
int val;
val=analogRead(0);//Read Gas value from analog 0
Serial.println(val,DEC);//Print the value to serial port
delay(100);
}


Result


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Done wiring and powered up, upload well the code, then open the serial monitor and set the baud rate as 9600, you will see the analog value. When detecting the alcohol gas, the value will make a change.
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Resources

  • Video

http://video.keyestudio.com/ks0041/

  • PDF and Code

https://drive.google.com/open?id=1pj450X_-swexzKBbjfFT9Qg9lGpdsnMh



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