BBS:      TELESC.NET.BR
Assunto:  Re: How to wake up the WiFi on a Zero 2W (it was working but has stoppe
De:       Chris Green
Data:     Wed, 18 Mar 2026 13:56:10 +0000
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Subject: Re: How to wake up the WiFi on a Zero 2W (it was working but has stopped)

The Natural Philosopher  wrote:
> On 18/03/2026 12:55, Chris Green wrote:
> > I have a new[ish] Pi Zero 2W running in a building close to our house
> > (close means about 30 yards away).  When I installed it I configured
> > one of the possible WiFi SSIDs with rpi-imager, then after installing
> > I added the other possible SSID (using nmcli I think).
> > 
> > It has run quite happily for a few days but as of yesterday afternoon
> > shows no sign of being connected.
> > 
> > I have tried restarting it, no effect.  I have checked both of the
> > routers it might connect to and they're both running and haven't
> > moved. I've even moved one of them into what is effectively line of
> > sight to the Zero 2W.  Still no connection.
> > 
> > What might be wrong and what can I do to get it to connect?
> > 
> Bring it in and put a terminal and keyboard on it so you can look at the 
> logs.
> 
That's not very easy, it's a bit of a 'fixed' installation. It might
be easier to move one of the routers nearer to it.

> I have a 30 metre pi Pico and it connects anywhere between -80dM and 
> 'not at all' for no visible reason - maybe its leaves blowing in the 
> wind. I dunno.
> 
> Right now its a happy little -84dBm. Its having a good day.
> 
> 30 metres is pretty tough for a pi.
> 
I just checked the WiFi signal strength using an Android tablet right
next to the Pi Zero and the better of the two SSIDs is around -70dBM
so it **should** be OK I would have thought.

-- 
Chris Green


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