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[aprssig] APRS event counter

Gerry Creager N5JXS gerry.creager at tamu.edu
Tue Dec 28 23:33:26 UTC 2004


To expand: tipping bucket rain gauge (0.01 in per impulse)...

gerry

James Jefferson Jarvis wrote:
> 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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-- 
Gerry Creager -- gerry.creager at tamu.edu
Texas Mesonet -- AATLT, Texas A&M University	
Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.847.8578
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