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How to choose a gas sensor ? The Grove - Gas Sensor module is useful for gas leakage detecting(in home and industry)
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We've released the Seeed Gas Sensor Selection Guide, it will help you choose the gas sensor that best suits your needs.
The Grove - Gas Sensor module is useful for gas leakage detecting(in home and industry). It can detect LPG, i-butane, methane, alcohol, Hydrogen, smoke and so on. Measurements can be taken as soon as possible based on its fast response time. Also, the sensitivity can be adjusted by the potentiometer.
Each Grove - Gas Sensor Kit consists of one gas sensor base and four detectors, including MQ2, MQ3, MQ5, and MQ9. Below is a contrast table of them. You can switch the detector on the base according to specific target gases.
Combustible Gas, Smoke
Hot-swapping the grove may lead to IC burnout, please turn off the power of the main board before swapping grove.
High sensitivity to Combustible gas in wide range
Stable performance, long life, low cost
Wide detection range
Simple drive circuit
Suggest Reading / References
Wiki of Grove - Gas Sensor(MQ9)
What is the resistance of the trim pot on R1 of this board? Is this the same trim pot for the HCHO Sensor? I can't find the make or datasheet for this component, so any information would be helpful.
So it looks like this is something like the Bourns 3362 trimpot
the marking on this indicates that it's a p103, meaning that it'