On Tuesday, February 6, 2018 at 9:08:30 AM UTC-8, Rod in Edm wrote: > > I really need to research installing a momentary contact on a gpio > pin-pair to allow for graceful shutdown (and/or a restart button) when > things go south. Since I know processes continue to run when the carrier > goes south, pushing such a button should at least allow a safe restart of > everything without the power-plug-pull hack. I hate doing that. > > A little gpio button to do an orderly shutdown (and/or reboot) is pretty easy to do. The Adafruit TFT display that I bought way back had button capability for that, and the script to monitor for the button being pressed was about as easy as it gets.
> But what is triggering the loss of wlan0 interface when the network > remains up? And why did it suddenly start? Ok, I'll give you that a naive > neighbour may be intruding on my wireless space - maybe installing a new > mesh wireless extender that's right next to my closest wall or something. > I hadn't considered an external cause like that. Right now my router is > set for "Auto" in terms of choosing a 2.4GHz WiFi channel, but I could set > it to one of 1, 6, or 11 (being the strongest of the dozen or so choices) > instead to see if it makes any difference. I could also connect to the > less powerful 5GHz WiFi for this RPi3 to see if I can evade the > interference. The funny thing is that no other WiFi device loses its WiFi > carrier and I have several that notify me within seconds if the WiFi is > lost. > > raspi do not talk 5GHz so that's out for a vanilla pi card. It might even be where you have the pi located physically. My model-B that is next to an upstairs window for my timelapse camera finds different AP's in the neighborhood than the model-B that is at ground level behind the house. I always hard-set my APs to a specific channel to at least rule 'that' out. I know one neighbor has something that channel-hops which drives me crazy trying to work around. Just wish I knew who it was so I could talk to them. Intermittent things are rough to figure out.... There also used to be a setting to stop the wifi from going to low-power on inactivity (I think it was called 'power management') but I'm not sure if that's set correctly now as the default in Raspbian anyway. Mine's been very stable for a long time since I went to a Ubiquiti AP that can radiate basically to Mars it's so powerful, so I've lost those brain cells by now..... -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
