How is clock synced n Aranet4?

• 

  anielsen001

  Posted: 13.03.2021 16:20

  Modified: 20.11.2024 16:25

  I have a question about the time stamps in the Aranet4 after export to csv file. There are slight differences in the time stamps after multiple downloads of overlapping timeframes. Here's an example of two merged csv files, you can see that the timestamps are similar for the same sensor readings, but differ. i can just throw away the overlapping portion from one dataset, but since Daylight Savings starts tomorrow, what will happen? It seems like maybe an initial clock value for the first sample s set when I connect via bluetooth. is this correct?

   

  julia> sort(df2)
  20×5 DataFrame
   Row │ Time                 CO₂(ppm)  Temperature(F)  Humidity(%)  Pressure(hPa) 
       │ DateTime             Int64     Float64         Int64        Int64         
  ─────┼───────────────────────────────────────────────────────────────────────────
     1 │ 2021-03-10T12:00:14       550            67.4           34            989
     2 │ 2021-03-10T12:00:50       528            67.4           34            989
     3 │ 2021-03-10T12:01:14       528            67.4           34            989
     4 │ 2021-03-10T12:01:50       543            67.5           34            989
     5 │ 2021-03-10T12:02:14       543            67.5           34            989
     6 │ 2021-03-10T12:02:50       535            67.4           34            989
     7 │ 2021-03-10T12:03:14       535            67.4           34            989
     8 │ 2021-03-10T12:03:50       537            67.5           34            989
     9 │ 2021-03-10T12:04:14       537            67.5           34            989
    10 │ 2021-03-10T12:04:50       546            67.5           34            989
    11 │ 2021-03-10T12:05:14       546            67.5           34            989
    12 │ 2021-03-10T12:05:50       537            67.5           34            989
    13 │ 2021-03-10T12:06:14       537            67.5           34            989
    14 │ 2021-03-10T12:06:50       554            67.5           34            989
    15 │ 2021-03-10T12:07:14       554            67.5           34            989
    16 │ 2021-03-10T12:07:50       557            67.5           34            989
    17 │ 2021-03-10T12:08:14       557            67.5           34            989
    18 │ 2021-03-10T12:08:50       560            67.5           34            989
    19 │ 2021-03-10T12:09:14       560            67.5           34            989
    20 │ 2021-03-10T12:09:50       539            67.5           34            989

  julia> 
   
• 

  aranet-techsupport

  Posted: 15.03.2021 23:52

  Modified: 16.03.2021 00:01

  For further troubleshooting of the issue could You tell whether the clock time on the device You downloaded CSV files was not changed between the 2 downloads merged above? Could You tell what is the Aranet4 application version that You are using on Your mobile device? If You do not have the latest version 2.0.6, then please update Your mobile device to it.

  As for the daylight saving time changes, the Aranet4 application has a built-in algorithm that takes into account its occurrence and correct timestamps will be assigned when daylight saving time change is applied to the clock time.

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