On 09/02/2010 06:19 PM, Roman Haefeli wrote:


I don't think that using a camera for this is the best approach.

Yeah I didn't expect it to be, I just thought it might work :)


The arduino approach is likely easier to implement, depending on what
kind of sensors you can use.

You could do it even without using an arduino at all: hook up the
resistor/LDR to your sound card input and use [dfreq~] from zexy to
measure the rate. I think you can't get a more precise setup than this
(by using the high sample rate of a common sound card). I once used that
to measure the speed of a turntable.

That's a great idea!!

I guess the same would apply to using a hall effect sensor, wouldn't it?

Thanks a lot
m.

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