Re: ATM A super accurate way to measure microsteps

[The Silent Observer <silent1@ix.netcom.com>]

Juan Herrero wrote:
> 
> Well yesterday I saw the light! Laser light that is. I went to
> RadioShack and got their cheapest laser pen pointer. Taped it to the motor
> shaft. And projected the beam on the  wall. I can now measure microstep
> movements 20mm big! TA DA!

If you want to double even that amount of "leverage" you can mount the
pointer on a fixed location, and put a mirror on the stepper axis; that
will double the movement of the laser spot, and might let you accurately
measure movement angles down to a milliradian or smaller.

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