[SOLVED] smoke detecting circuit

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vvarlord

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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
 

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

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.
 
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    vvarlord

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    V

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that was heplfull tnx
 

    V

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