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.