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Arduino Electronic Brick MQ-2 Gas Sensor Brick
This brick includes a MQ-2 Gas sensor, Gas Sensor(MQ2) module is useful for gas leakage detecting(in home and industry). It can detect LPG, i-butane, methane, alcohol, Hydrogen, somke and so on. Based on its fast response time. measurements can be taken as soon as possible.
Connect the + pin to 5v and - pin to GND, S pin will output the analog value.
Schematic for this brick.
This birck work with Arduino Sensor Shield and Arduino Mega Sensor Shield via 3Pin Connect Cables.
Or directly with Iteaduino.