[squeak-dev] Fun things to do with SqueakMQTT

Eric Gade eric.gade at gmail.com
Thu Apr 2 18:21:15 UTC 2020


This is great. Now when someone asks you "What do you use Squeak for?" you
can sincerely answer: "All kinds of shit!"

On Thu, Apr 2, 2020 at 1:37 PM tim Rowledge <tim at rowledge.org> wrote:

> Living waaaaay out in the middle of nowhere (it isn't a joke that I have
> an underground laboratory in the middle of the rainforest on a Pacific
> island) we have a well and a septic system. One of the problems we face is
> too-frequent minor electrical glitches that can trip circuit breakers.
> That's annoying for in-house stuff but if the breaker/gcfi for the septic
> system pump trips then poop don't pump and after a day or two a shrieking
> alarm wakes us up - because of course it happens at night.
>
> So to monitor the power actually at the pump and get a warning when it is
> absent - before the shriek - I adapted one of the little ESP8266 wifi SBCs
> I've been using for temp/humidity monitoring in the house. Since I don't
> really care about the outside temp/humidity for this purpose I just removed
> the sensor and the relevant code and reflashed a board so it simply reports
> status; and of course if there is not power it can't report anything. At
> the Squeak end I simply track the last timestamp received from that unit
> and if nothing has come in for 30 minutes it notifies me.
>
> Of course this is really nothing like as sophisticated as the usage
> LabWare put an extension of my MQTT code to; that's monitoring the power
> grid for Scottish Power and apparently several US states.
>
> tim
> --
> tim Rowledge; tim at rowledge.org; http://www.rowledge.org/tim
> Strange OpCodes: XER: Exclusive ERror
>
>
>
>

-- 
Eric
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.squeakfoundation.org/pipermail/squeak-dev/attachments/20200402/d6d2bd34/attachment.html>


More information about the Squeak-dev mailing list