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Angular Advancement of a Stepper Motor
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Irv
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May 17, 2019 - 8:53 pm
Member Since: December 23, 2017
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This actually involves a violin bow, but it would be a stretch to place the thread under a violin related heading.

I would like to control the advance of a lead screw for a wood profiler with a stepper motor, so that whenever I touched a momentary contact switch the motor would advance the screw x degrees (likely something like 720 degrees).  This is likely easily done with a micro controller system such as arduino, or with a dedicated stepper motor controller.  I know what I want to accomplish but I do not know how to get there.  

Any assistance would be appreciated.

Research is what I’m doing when I don’t know what I’m doing.  —Werner von Braun

Without deviation from the norm, progress is not possible.         —Frank Zappa

Experience is a difficult teacher, it gives the test first and the lesson after.

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GregW
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May 17, 2019 - 11:07 pm
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Im thinking you would definately need the controller.  Seeems like off the top of my head youd have to use some relays between the arduino and motor for current reasons...but just a quick thought. 

Hey..Maybe an rc plane motor and the transmitter/reciever it comes with? I thinkThe flap servos would be a little weak but those might work and would interface with the arduino a little easier.  The prop motors are pretty hefty but youd have to figure out the drive between it and what youre trying to do..  Parker makes industrial servos linear type.  But then how are you going to handle the different string higths.  Maybe peek at what they have.

Good discussion though.  Ill be interested in this one.  Juicy! 

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Irv
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May 18, 2019 - 7:04 am
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Hi @GregW and others.  To get a feel for what I want to do, go to the YouTube video entitled “Pete brown — propeller blades duplicator.”  Substitute a bow head for the propeller blade and substitute wood (or in my case bamboo) for styrofoam.  In the video, the operator presses a button by his thumb to advance the lead screw for another cut.  When he presses several times he creates a stiffening rib.

Research is what I’m doing when I don’t know what I’m doing.  —Werner von Braun

Without deviation from the norm, progress is not possible.         —Frank Zappa

Experience is a difficult teacher, it gives the test first and the lesson after.

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Fiddlerman
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May 20, 2019 - 6:19 pm
Member Since: September 26, 2010
Forum Posts: 14472

You lost me at "Angular Advancement of a Stepper Motor"..... LOL

"The richest person is not the one who has the most,
but the one who needs the least."

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