That makes sense when you think about it, it's more for acute dust/smoke than lower levels of PM2.5 etc. I've not got vibration on my list at the moment, but I have got sound, in terms of SPL at least. Soon, I hope..I have all the bits ready for it...

You would think so, but we have one of these in our shark fan and it's been working for over a year non stop

It's been a while since I looked at it but I think if you write your own code, it should work fine. The main issue was the code was making "readings" out of noise from what I remember. I'm about to try some other sensors when I get round to it, for polluting gases, this will be interesting I think...if they work!

I decided a while ago that I wanted to carry on doing the electronics stuff, but the channel seems to want to be about 3d printing (apparently!). Long story short I'm going to be having to make a new channel for this stuff. Which I'm procrastinating over. So...I dunno, maybe subscribe until I announce it? :)

It's the 128 x 32, but the 128 x 64 would work too, you just have to change the initialization string in the setup code..I can provide more info if you need it, let me know :)

@@LostInTech3D thank you very much :)

LOL - my next vid should have your back

Noted - it's hard to know how much detail people want to get into. I will certainly include more data in the next one.

from what i understand doing research on aerosols/dust, the sensor is likely using a known distribution and fitting the data to that curve. this is particularly (heh) inaccurate because most aerosol sources tend to be very size range specific. for example a car exhaust will be making mostly PM2.5-5, someone walking will kick up mostly PM100+, pollen and mold spores will be somewhere in the middle. while statistically you would expect the distribution to even out over time you actually tend to observe the opposite since static charge and humidity work on the different particle size's differently. under PM2.5 tend to be completely suspended in air due to their relatively similar mass and inertia to air molecules (think solvated) PM5-100 tend to be statically pulled to the ground due to their size to charge ratio (vinyl floors are really good at this and is why real hardwood floors are easier to keep clean) PM100+ are strongly effected by the humidity% either gaining a lot of mass and sinking to the floor or getting stuck to the walls there is also a big difference between indoor and outdoor air currents which can amplify the effects of static charge. I presume the laser sensor in these cheap sensors is mainly calibrated towards larger particle sizes since theyre so much easier to detect and will not loose accuracy as much overtime. in the lab we would use a large chamber (~50cm long tube) that used a mercury flash bulb to scatter light in a similar manner, but was then fed into an analogue photomultiplier tube arrangement. there is something about the quantum mechanical properties of light which makes analogue light amplification circuits just so much more accurate, for example look at the most recent generation of night vision goggles the US military uses. despite the numerous advances in diode size and bandgap tuning in the last 20 years, the us gov cant figure out how to make a better night vision goggle without vacuum tubes lol. I think this sensor is accurate enough if you are monitoring indoor aerosols and want to know if your home air filter needs replacing; but I doubt its going to be accurate enough when you have a unique particulate source such as a poorly running gas furnace, an off gassing solvent or close by automobile exhaust source.