Ks0041 keyestudio Analog Alcohol Sensor: Difference between revisions
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==Viceo== | |||
http://www.keyestudio.com/wp/2016/05/ks0040-keyestudio-mq2-analog-gas-sensor-module/ | |||
[[Category: Sensor]] | [[Category: Sensor]] | ||
Revision as of 14:07, 29 September 2016
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 A potentiometer.
Specification
- Power Supply: 5V
- Interface Type: Analog
- Quick response and High sensitivity
- Simple drive circuit
- Stable and long service life
- Size: 49.7*20mm
- Weight: 6g
Connection Diagram
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);
}
Viceo
http://www.keyestudio.com/wp/2016/05/ks0040-keyestudio-mq2-analog-gas-sensor-module/