I think the air pollution meter sold on the market would have been assembled by the manufacturer after buying the parts module. If I just buy the parts module, it would be cheap.
Can I make an air pollution meter in Arduino?
458 4 8 years ago
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pu1. I looked it up because I was curious, too
http://paeton.tistory.com/entry/%EC%95%84%EB%91%90...
He's made an air quality meter out of Arduino
2017-12-07
pu3. http://www.bloter.net/archives/225362
Looking at the article here, it seems that there is a limit to the sensor.
2017-12-07
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