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Sensirion / arduino-sps

Arduino library for Sensirion SPS30
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SPS30 always returning equal PM2.5 and PM10 concentrations #31

Closed ishan2109 closed 3 years ago

ishan2109 commented 3 years ago

The PM2.5 and PM10 mass concentration values returned by SPS30 are always in a very close range(difference <=1 ug/m3, screenshot attached below).I have used the code directly.

I am using NodeMCUv1.0 and an external power supply 5V 2A just to make sure there is no issue with power. I also have SDS011 sensor by Nova Fitness and Aeroqual. Both of them have are returning PM2.5 and PM10 values with a significant difference (at least 5-10 ug/m3).

I am not sure if there is a problem with sensor or I need to do some modifications in the code itself?

Screenshot (14)

rnestler commented 3 years ago

Hi @ishan2109 I don't see anything wrong that would point in the direction of any issue with the code itself. Since we can't really give support here regarding the sensors performance, I recommend you to contact support via https://www.sensirion.com/en/about-us/contact/

winkj commented 3 years ago

Duplicate of #27