At 09:10 AM 10/19/00 -0700, you wrote:
>Subject: [OT] RPM electronics
>
>
>| Hello All:
>|      I am in a pinch. I need to find a complete RPM set-up for an
>| experiment.
...
>| build this but I just dont have the time. That you in advance for your
>help.

At that speed, couldn't you use a stopwatch?  You can get within
0.1 second with little trouble, that's 0.2%, not bad. Just measure the
time for one rotation and divide it into 60 seconds to get RPM.

Best regards,




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