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bencorrado / pmsensor

Library to read data from particulate matter sensors
MIT License
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Problem with outliers #6

Closed linuxlurak closed 9 months ago

linuxlurak commented 6 years ago

Hi I'm not sure if this is an issue...

In Home Assistant I get such results for PM25: image No idea why.

PM10 looks ok: image

Is there any chance to rule out outliers? Is this a bug? I'll restart HASS and report back if the problem persists or not.

Thanks for your great work anyways! Cheers!

linuxlurak commented 6 years ago

I dumped the data from the home assistant database: Go to sqlite cli: sqlite3 /home/pi/.homeassistant/home-assistant_v2.db then enter:

.mode csv 
.headers on 
.out pm10 
select * FROM states WHERE entity_id="sensor.pm10";
.out pm25 
select * FROM states WHERE entity_id="sensor.pm25";

this are samples of pm25 pm10 that are next to each other:

state_id,domain,entity_id,state,attributes,event_id,last_changed,last_updated,created 2817330,sensor,sensor.pm25,4932.2,"{""unit_of_measurement"": ""\u00b5g/m\u00b3"", ""friendly_name"": ""PM2.5""}",,"2017-07-18 18:01:05.519336","2017-07-18 18:01:05.519336","2017-07-18 18:01:06.803446" 2

state_id,domain,entity_id,state,attributes,event_id,last_changed,last_updated,created 2817332,sensor,sensor.pm10,3.0,"{""unit_of_measurement"": ""\u00b5g/m\u00b3"", ""friendly_name"": ""PM10""}",,"2017-07-18 18:01:06.165309","2017-07-18 18:01:06.165309","2017-07-18 18:01:07.198581" 2

bencorrado commented 1 year ago

@linuxlurak Did you ever resolve this issue?