Difference between revisions of "Carbon Monoxide Sensor - MQ-7"
From Geeetech Wiki
(→Introduction) |
(→Usage) |
||
| (8 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
==Introduction== | ==Introduction== | ||
| − | [[File:MQ11.jpg]] | + | [[File:MQ11.jpg|150px]] |
| − | + | [[File:MQ-7.jpg|300px]] | |
| − | [[File:MQ-7.jpg]] | ||
This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm. | This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm. | ||
| Line 15: | Line 14: | ||
==Specification== | ==Specification== | ||
| − | [http://www.geeetech.com/Documents/MQ-7%20Datasheet | + | MQ-7 datasheet [http://www.geeetech.com/Documents/MQ-7%20Datasheet.pdf ] |
==Usage== | ==Usage== | ||
| − | [[File:MQ- | + | [[File:MQ-7 wiring.jpg]] |
| − | [[File: | + | [[File:MQ-7 pic.jpg]] |
VCC - 5V | VCC - 5V | ||
| Line 40: | Line 39: | ||
==How to buy it== | ==How to buy it== | ||
| − | Click here to buy [http://www.geeetech.com/ | + | Click here to buy [http://www.geeetech.com/carbon-monoxide-sensor-mq7-p-295.html Gas Sensor - MQ-7] |
Latest revision as of 07:59, 10 May 2012
Introduction
This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm.
Features
- High sensitivity to CH4，Natural gas
- Small sensitivity to alcohol, smoke
- Fast response
- Stable and long life
- Simple drive circuit
Specification
MQ-7 datasheet [1]
Usage
VCC - 5V GND - GND S - Analog pin0
Example code
int sensorValue;
void setup()
{
Serial.begin(9600); // sets the serial port to 9600
}
void loop()
{
sensorValue = analogRead(0); // read analog input pin 0
Serial.println(sensorValue, DEC); // prints the value read
delay(100); // wait 100ms for next reading
}
How to buy it
Click here to buy Gas Sensor - MQ-7
