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[aprssig] APRS event counter

James Jefferson Jarvis jj at aprsworld.net
Tue Dec 28 22:11:37 UTC 2004


Scott Miller wrote:

>I'm working on adding a new feature to the OpenTracker that'll let you count
>events on one of its input pins.  It'll probably have a couple of modes -
>number of counts since reset, number of counts since last transmit, and
>maybe counts per hour.  I'm looking for ideas on possible inputs.  Some
>suggestions:
>
>Lightning counter.  Simple two-transistor circuit to detect nearby strikes.
>
>Geiger counter.  Already have one of these using a similar processor.
>
>Traffic counter.  Could be used with an IR sensor for trail traffic
>monitoring.
>
>The counter input triggers on a falling edge and has an internal pull-up
>resistor.  If anyone's got ideas for other uses, let me know and I'll do
>what I can to make it useful for that application and maybe set up an
>example.
>
>Scott
>N1VG
>
>
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>  
>
Rain gauge.




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