Capturing fleeting events

Filename: SC_2sPulseTrain.htm

Apologies! This is an obsolete, deprecated copy of this page!

Please go to the "good" copy"-http://sheepdogsoftware.co.uk/sc2sPulseTrain.htm

If you are feeling kind, and would contact me, tell you what page sent you here, I will try to get rid of the faultly links.

This page explains a trick for capturing fleeting events with electronic monitoring systems. It goes on to provide some circuit details.

What is a "fleeting event"? Why is it hard to "capture"?

"Fleeting" is a relative term. If you dedicate a small system to the job, you could "watch" a cookie jar, and detect your 10 year old snatching a cookie from it, even if he only had the lid off for two seconds. The nice scientists at CERN detect events that last micro-seconds.

"Fleeting compared to what?" is the question.

Compared to the resources you want to devote to the monitoring.

A system that checked if the cookie jar was open once a minute really wouldn't be good enough.

Why can't you check it, say, every half second? You could, of course... if the relevant electronics weren't doing anything else.

I have a system ((link)) that checks four temperature sensors, a rainfall sensor, windspeed, barometric pressure, the state of my burglar alarm... and more! It presents graphs of the readings to anyone who cares to visit a web page........

And you can read all about it on the up-to-date version of this page!

This page is meant for hobbyists. A lot of pleasure (or inspiration to improve your design!) can be had from comparing the results your electronic rainfall monitors record with the results of a simple traditional rain gauge.

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