Re: [ProgSoc] Temperature of the Progsoc Room

[Telford Tendys <telford@nospam.progsoc.uts.edu.au>]

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

Best to store the samples in their raw form and do the processing
as part of the display process. Firstly, you don't have to wait
for results, secondly you can change your mind and try something else.
Yeah, I do realise that if a lot of people want results then the
processing load goes up dramatically but how likely is that?

> 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.

This is a fairly common method for ADC when the input signal is slow.
Time is the easiest thing to measure by computer. Did you callibrate it
next to a mercury bulb or just calibrate it against your calculated
discharge times?

	- Tel
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