Need help With SEN55 environmental node

Hello,

I recently bought a SEN-23715 and connected it with an esp32 and set it up in Home Assistant but i’m getting some weird readings where all the PM are getting the same readings but the temp and humidity seem to be correct. Also they are super high, according to google “concentration of 6,553.40 µg/m³ (micrograms per cubic meter) for PM1, this would indicate extremely hazardous air quality, as PM1 levels are rarely this high in typical environments.”

Appreciate any help.

I’m not sure if this helps, but the value 65535 is the maximum positive unsigned 16 bit integer, which suggests a communication failure with the particle size sensor.

The other sensors seem to be working as expected.

Can you share a photo of the wiring/soldering?

I figured it out, i was only giving it 3.3V instead of 5V. Everything seems to be working now. Thank you

Right on, enjoy!