link to download this project :
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link to download the MQ series gas sensor library:
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Welcome, In this tutorial we will simulate how to use the gaz sensor, to detect the presence of a toxic gas, or smoke, in a given location.
Next, we will process and display the results, using an LCD display and 2 indicator lights.The MQ2 gas sensor is used for the detection of gas leaks for equipment in the consumer and industrial markets.This sensor is designed to detect LPG, i-butane, propane, methane, alcohol, hydrogen and smoke...

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