On Sat, 31 Aug 2002, Morgan Olsson wrote:

>> How
>>slowly can it accumulate ?
>
>max 1 minute.

I think that you will be happy with a self heated thermistor and a
pic-based high pass filter to determine when the event happens. You could
use something as simple as a 555 oscillator or a PIC AD. Some
experimenting will be necessary.

Peter

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