Dirk Mueller

Please see https://github.com/opendata-stuttgart/sensors-software/issues/636#issuecomment-575640339 The statistics in there basically confirm that the pms is both a cheaper and a more accurate choice than the sds011

I wonder if the scale between the sensors is not comparable because they use different units of measurement?! Will read datasheets.

I briefly did check the datasheets, and I could not find a difference in unit or scale documented. I am as puzzled as you are on this.

@unsermanninchina according to your previous comments the PMS sensor is good, the sds011 is off.. So replacing that one might be more relevant alternatively if you're interested a sensirion sps30...

so I look at https://api-rrd.madavi.de/grafana/d/Fk6mw1WGz/wifi-signal?orgId=1&var-chipID=esp8266-13753396&from=1600150301462&to=1600164410063 and I can see corresponding dropouts in wifi reporting and in pm sensor reporting. can you please share a screenshot of the /status page when...

It looks like we're reading an error code as temperature value. I can fix the readout to skip such values, so no measurements will be taken instead. Given that it...

I use this one: https://www.conrad.de/de/p/kontakt-chemie-plastik-70-74313-aa-isolier-und-schutzlack-400-ml-814169.html But there's probably a million variants of these. It is highly electrically isolating and water proofing transparent spray. You don't have to buy these Although...

> A software-reboot did not help, it had to be a hard-reset (power off, power on). Now all Sensors work as expected again. So thats useful to know. We do...

> I want to use doit esp8266 grove kit with this project I'm curious: why? whats the advantage? we could potentially have a special build for this board variant if...

Es gibt nun einen NRZ-2020-XXX build (sowohl auf stable als auch auf beta). dieser sollte auch gehen. wenn auf diese version per OTA geupdated wurde und keine neuen probleme auftreten...