I have a 5V fan that is positioned above the sensor’s hole. It sucks the air up and pushes it outside, see the sketch. I think this way is better than pushing the air down. The airflow is not very strong but just strong enough that is flows a little.
I have no comparison data to say the system work alright. I’ve ordered another module so I put them side by side.
I’m looking for someone that has more experience in representing and processing the dust data. I’m using a general equation that does voltage to dust-density conversion but I think it is very inaccurate. I’m basically looking for a trend instead of an absolute value.
I know WD has Arduino support and I’ve tried it (just to see if it works). I’d appreciate new tags but don’t want to bother you with it since it takes your time. In parallel to this “project”, I’m using a lightning detector (currently on RPi) but would like to move it to Arduino. That would also be interesting to feed into WD as an Arduino custom tag.
