How to interface MQ-6 gas sensor with pic16f877a

[Pallavi Burje]

hi...

I hv done calculations and calibrations for mq-6 gas sensor on bread-board.. now i want to interface MQ-6 with pic16f877a .. so want to draw schematics in Proteus but not succeeded.. so plz help me...

 

[surya409]

hi...i am trying to do calibration for mq 7..but i couldn't...can u plz explain me how to calibrate it

 

[Hamid reza_64]

Hello every body
I'm working on MQ 6 LPG Sensor but as soon as I started I found some problem and I hope someone help me!
1-when I plugged MQ6 in to Vcc(+5) it became hot! in first plunging some smoke flew from it!!!! but it works yet !!!! the question is that, how much the sensor should be warm?
2-I read output of MQ6 by ADC of atmega16 that was about 400 but passing the time it reducing and after 2h it shows 190 !!!! the question is , what the hell is happening???
3-I found more than 2 formulas and ways to calibration calculation! which of them is the best? plz show the way you calibrate it properly
I hope someone answer me.
thanks