[SOLVED] smoke detecting circuit

[vvarlord]

i want to build a smoke detector
i just want to know what kind of sensor do i have to use
i just saw a mq2 sensor, with 6 pins,,but didn't find any datasheet for it
could anyone guide me to the right direction of completing this circuit?
tnx

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and by the way , i'm using atmega 8 for controling the sensor

 

[andre_luis]

Had you take a look at here ?

https://www.edaboard.com/threads/215324/


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[vvarlord]

do you know a simple circuit to convert the 6pin detector to 3pin sensor?

 

[jayanth.devarayanadurga]

The sensor shows that 2 pins are for heater and if you see the other 4 pins then a pair of pins are shorted. So, it is actually 3 pin sensor.

https://www.figarosensor.com/products/813pdf.pdf


I have seen datasheets of many sensors and they are actually 3 pins.

 

[vvarlord]

that was heplfull tnx