Re: RPM counter

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "no1vixenfanau"
<no1vixenfanau@y...> wrote:

> Does anyone know of a simple RPM counter circuit? I want to attach
> it to my Sherline spindle so I know what speed it is running at.
>
> Thanks for any help provided.
>
> Manfred

How about a cheap digital bike speedometer. Last time I looked, they
were ~$10 on ebay. Magnetic pick-up. Program to KPH and 167, IIRC.
Reads out in RPM X 10.

Ron Thompson
Was On the Beautiful Mississippi Gulf Coast,
Now On the Beautiful Florida Space Coast, right beside the Kennedy
Space Center, USA

http://www.plansandprojects.com

'If you're standing in a puddle, don't touch anything that hums'
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