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Change noise data times per minute

Sensors
#1

hi team!
One question about the SCK 2.3 : it seems that the sensors record noise data once per minute. How exactly does this work—does the sensor take a single measurement every minute, or is it an average of multiple readings within that minute? Also, would it be possible to change this to every 10 seconds?
kind regards
alfonso

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#2

Hi @geluidmetingrotterda

Yes, noise is recorded every minute. A 20ms sample is taken every minute and processed doing a FFT to calculate the RMS. There is no averaging on the SCK itself.

You can change the interval to as low as 15s. To do that, you need to open the shell and do:

  1. Enable “do not disturb me while I type mode”
shell -on
  1. Enable 15s reading interval for all sensors:
config -readint 15
  1. Restore all other sensors to their appropriate interval - I suggest you use a shell script for this:
sensor temp -interval 60
sensor hum -interval 60
sensor rssi -interval 180
sensor light -interval 60
sensor press -interval 60
sensor uva -interval 60
sensor uvc -interval 60
sensor uvb -interval 60
sensor sd -interval 60
sensor sen5x pm -interval 180
sensor sen5x pn -interval 180

Check the job:

sensor

This should give you:

Enabled
----------
Temperature -> every 4 int (60 sec) 
Humidity -> every 4 int (60 sec) 
Battery -> every 1 int (15 sec) 
SD card -> every 4 int (60 sec) 
WiFi RSSI -> every 12 int (180 sec) 
Light -> every 4 int (60 sec) 
Noise dBA -> every 1 int (15 sec) 
MPL Barometric pressure -> every 4 int (60 sec) 
SEN5X PM 1.0 -> every 12 int (180 sec) 
SEN5X PM 2.5 -> every 12 int (180 sec) 
SEN5X PM 4.0 -> every 12 int (180 sec) 
SEN5X PM 10.0 -> every 12 int (180 sec) 
SEN5X PN 0.5 -> every 12 int (180 sec) 
SEN5X PN 1.0 -> every 12 int (180 sec) 
SEN5X PN 2.5 -> every 12 int (180 sec) 
SEN5X PN 4.0 -> every 12 int (180 sec) 
SEN5X PN 10.0 -> every 12 int (180 sec) 
SEN5X Typical Particle Size -> every 12 int (180 sec) 
AS7331 UVA -> every 4 int (60 sec) 
AS7331 UVB -> every 4 int (60 sec) 
AS7331 UVC -> every 4 int (60 sec)

Make sure that:

  • all sensors are at 60s except PM, PN, TPS, which should be at 180s.
  • Noise readings and battery should be the only ones at 15s.
  1. Restore the normal mode:
shell -off

The kit will reset then and work normally.

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#3

@bron tagging you here as in the past you have inquired about the same.

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