dear experts i have purchased alcohol sensor from the sparfun.com and according to data sheet i have connected 10k ohm resistor accross it and switche on for one whole day and night after that i try to write code and when alchol is not detected 200 value shows in the lcd i it should have shown valu…

MQ-3 alcohol sensor

santoshaxl October 6, 2012, 4:17pm 3

if i remove second line value is displayed always zero what is the problem then .

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