Sensor maintenance and fixing

After some months of working the sensor started to give me unrealistic values.

arduino air pollution
I’ve decided to open the box and clean the inside, there was a dead ant and some dust.

dust on the grill
dust on the grill
Inside
Inside
Dust inside
Dust inside

Unfortunately the metallic plate that covers the receiver of the sensor PPD42NS was damaged by the rust, i’ve decided to remove the rust and paint the metallic plate with some spray paint.

rust
rust
rust
rust

The Shinyei PPD42NS needed to be recalibrated but all the components were perfectly working and now the sensor is working again!

shinyei ppd42ns

Successivo Back to work!