Subj : Re: More on wifi range - Pi PICO W Oil level sensor
To   : All
From : c186282
Date : Thu Dec 11 2025 09:30:01

On 12/10/25 04:55, The Natural Philosopher wrote:
> On 10/12/2025 05:27, c186282 wrote:
>  ˙ nastiness.
>>
>> ˙˙ Easiest ... add one wifi extender, log into
>> ˙˙ the camera, see whether you get more bars
>> ˙˙ with the main or the extender.
>>
> 
> Actually something that might be of interest...
> 
> # iwlist wlan0 scanning | grep -e Cell -e Channel -e Quality -e Encrypt 
> -e ESSID
> 
> Shows all stations visible to a ZeroW˙ ... run it as root...
> 
>  ˙˙˙˙˙˙˙˙ Cell 01 - Address: 00:1D:AA:79:78:40
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Channel:7
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Frequency:2.442 GHz (Channel 7)
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Quality=44/70˙ Signal level=-66 dBm
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Encryption key:on
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ ESSID:"Wifi1"
>  ˙˙˙˙˙˙˙˙˙ Cell 02 - Address: 30:46:9A:A2:89:F6
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Channel:13
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Frequency:2.472 GHz (Channel 13)
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Quality=51/70˙ Signal level=-59 dBm
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Encryption key:on
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ ESSID:"wifi2"
>  ˙˙˙˙˙˙˙˙˙ Cell 03 - Address: 74:4D:28:4A:21:86
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Channel:3
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Frequency:2.422 GHz (Channel 3)
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Quality=35/70˙ Signal level=-75 dBm
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ Encryption key:on
>  ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ ESSID:"wifi3"
> etc etc.

   Interesting.

   DOES show a number of "cells" ... but not the ESSID of
   my extender for some reason.

   In theory, this sort of data could be used by a
   relatively simple daemon to switch back and
   forth to the 'best' signal. The old CL stuff
   is fine ... but can sometimes be replaced by
   half a dozen lines of more-comprehensible Python.





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 * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

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