Resources

Some datasheets attached.

Links of sample projects / examples (taken from the MQ-3 site):
http://wiring.org.co/learning/basics/airqualitymq135.html

With an Arduino:
http://www.danielandrade.net/2010/03/07/building-an-breathalyzer-with-mq-3-and-arduino/

Conversion from PPM to BAC:
http://en.wikipedia.org/wiki/Blood_Alcohol_Content

Driving pins with shift registers:
1) http://www.radiolocman.com/shem/schematics.html?di=65110
2) http://www.arduino.cc/en/Tutorial/ShiftOut

Driving an LED display with 595's:
http://www.arduino.cc/playground/Code/LCD3wires

Driving an LED Matrix (also uses toner transfer techniques)
http://bear24rw.blogspot.com/2009/10/led-matrix.html
Ċ
MQ-3.pdf
(55k)
John Leehey,
Apr 23, 2010, 11:39 AM
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