One of these badboys is all we need assuming we can keep a lead acid battery charged nearby https://www.amazon.com/DROK-Converter-Step-down-Transformer-Regulator/dp/B00C66B3PM/

If there's already a wire nest we could also deadbug a TO-220 package regulator into the fold.

On 2016-09-28 12:07, hol@gaskill.com wrote:

What is the input voltage to the switch, 7.5V?  I need to order some switching regulators, can get an extra one that meets power needs of switch if we want to run from lead acid battery.  Alternately could boost from a regular USB battery bank that stays plugged into a wall wart to top off.

On 2016-09-24 17:47, robb wrote:

i think those (myself included) who want a dedicated line should run it at our earliest convenience

as to the power, wouldn't a ups be nice for between the wall outlet & door system?

On Sat, Sep 24, 2016 at 5:25 PM, Jake <jake@spaz.org> wrote:

last week I power-cycled the front door beaglebone black and its ethernet interface started working again.  Before I did that, the ethernet port was not getting a link at all, even when connected to a known good cable.

After the power cycle, its ethernet worked, but since I had not power cycled the USB hub and magstripe reader, it was giving errors until i rebooted it, and then it worked properly.

well i spoke too soon, it just came back online by itself.

The front door computer has a battery backup so that it can keep working even if the rest of the world disappears.  But we won't find out about it losing power unless it has a connection to the internet.

presently it goes through at least one hub on the way back to the server area, and that hub does not have a battery backup, and apparently gets unplugged regularly.

I still think we should have a dedicated CAT5 ethernet run from the front door to the server rack, since this is such important infrastructure.

thank you
-jake

On Mon, 19 Sep 2016, Marc Juul wrote:

Eh it's pretty far and going through a floor and the timeless infinite
light room. Let's not run that again if we can help it. I'll go check on it
in a bit. We could do a new run up to the public terminals and just join it
to the existing wire from the doorputer to get a dedicated run.

--
marc/juul

On Mon, Sep 19, 2016 at 8:02 PM, Jake <jake@spaz.org> wrote:

the front door computer is still not on the network as far as i can tell.

i haven't seen sudobot talk (in irc) about the front door since 9/13

i'm assuming people are still able to use their cards to get in?

we really need a dedicated CAT5 cable run from the front door computer to
the server rack in sudoroom.  No hubs or switches along the way.

-jake


On Sat, 17 Sep 2016, robb wrote:

reseated ethernet connections

the bbb's ethernet port leds blink

i noticed the power cord is miserably connected to the wall & the ethernet
run takes an unfortunate journey under the rug between sudo to stage door

On Fri, Sep 16, 2016 at 1:35 PM, Jake <jake@spaz.org> wrote:

the front door computer does not appear to be on the network.

i'm guessing people are still using their cards to get in, but if there's
a problem, for example if it gets unplugged from electricity and switches
to battery backup, we will not be notified and will not know to send
help.

can someone take a look at the ethernet situation over there and see why
it's not getting back to the main network?

-jake
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