[nSLUG] linux home or workplace automation and Universal Powerline Bus

Dop Ganger nslug at fop.ns.ca
Sat Sep 20 15:20:15 ADT 2008


On Sat, 20 Sep 2008, George N. White III wrote:

> What I want to do:
>
> 1.  detect loss of line power (e.g., UPS goes to battery)
> 2.  with a short period (1-2 mins), initiate shutdown of the
>     lower priority systems -- a) they don't get generator
>     power so will have to be shutdown, and b) to reduce
>     the heat going into the room
> 3.  if the generator comes on, start the A/C after the
>     specified delay, otherwise, initiate shutdown of the
>     remaining systems so they can do a clean shutdown
>     before overtemp is triggered or the UPS dies.

Arduino (http://www.arduino.cc/) might be worth a look if you're 
interested in the DIY route. There are various different types with 
different types of connectivity (USB, Bluetooth, serial) but the big 
selling point is its IO; both analog and digital IOs are copiously 
provided for, so you can trip relays and measure thermistors as required.

Cheers... Dop.



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