Is there some easy way to add a small LCD or other digital panel with a frequency counter, to a circuit? I was thinking of attaching that to the actual welder. I have separate frequency counters, but would like to know if there is an easy way to add a digital panel.
i
A OEM Basic stamp and a LCD work great up to 60 Khz or so, with ~1 hz resolution, use a prescaler before that ie divide by 10 or 100 or 3 or whatever.
Steve
Depends on how accurate you need.
You can get inexpensive (
I see. Thanks. Well, I will wait with doing it.
i
This is the perfect answer, thanks.
i
Someone has programmed a PIC16C84 or 16F84 to do this up to about 40MHz, with a standard LCD panel (anything that uses a HD44780 chip or clone thereof). Google for pic frequency counter. I think the ham radio people like them.
I was meaning to write one that could do reciprocal counting to get fast updates on low frequencies but I never got around to it, partly because I got a very nice HP counter second hand so my motivation reduced.
Chris
Just because the meter can display 3.5 digits doesn't mean the problem requires that much precision. The OP didn't say anything about how much precision he needs, but from context of other posts I'm guessing that he just needs to know order of magnitude.
where do you get stable enough parts to get 3.5 didgts precision?
Bye. Jasen
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