Re: [ProgSoc] Temperature of the Progsoc Room

[Anton Blanchard <anton@nospam.progsoc.uts.edu.au>]

> The web page graphs containing the temperature of the progsoc room
> could do with some signal processing. Since the temperature is sampled
> every minute but only to an accuracy of one degree C, it would be better
> to sacrifice some time resolution for some temperature resolution and
> use a moving window average of somewhere round 15 minutes.

I have been meaning to do this (a few people have been hassling me over
it :)

I have just added in some averaging. Now to wait for the results...

> After all, I don't feel that it's likely that the real room temperature
> flickers up and down by exactly one degree from minute to minute --
> do you?

The method of analog to digital conversion used by Tim is interesting.
Since there is no ADC on the micro, it measures the discharge time of a
capacitor, timing until the voltage is the same as the analog voltage.
It then has a lookup table to convert the time into a voltage.

btw there is an RPC client as well - try out rtemp on a progsoc machine.

Anton
-- 
Anton Blanchard                         anton@nospam.progsoc.uts.edu.au
Computer Systems Engineering Student    anton@nospam.lister.flex.com.au
University of Technology                http://www.progsoc.uts.edu.au/~anton/
Sydney, Australia

Look, Rimmer, death isn't the handicap it used to be.
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