Hello! Good day!!
It is my first time to use a MQ3 sensor, how do you pre heat this type of sensor?
What's the process?
Thank you for your response!!
Please post a link to the actual sensor you're using.
Does it not come with any documentation that describes how to use it?
A good way to find out how to use anything with Arduino is to do an internet search for it and include "Arduino" as a search term;
Preheating is simply applying power to the heater for a period of time before taking a reading. This is done in order to get a stable reading.
The preheat time should be 24 hours for a new or infrequently used device.
For a regularly used device tens of seconds to a few minutes will be sufficient.
Here is a tutorial that will tell you more about using an MQ3 sensor with an Arduino.
Run it normally for at least 24 hours, up to 72 hours. If you print out the ADC value, you will see it changing constantly in the early stages.
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