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1  Using Arduino / Motors, Mechanics, and Power / Re: how to get started with stepper motors and hall effect sensors on: February 01, 2013, 12:41:14 pm
Thanks for your input. For the last year I have been looking into building a cnc and have nearly pulled the trigger on getting it started.  I plan on making that my next obsession after I get this machine completed.  I like the idea of getting some help with the coding.   After all we can't know everything,  it's nice to know I can reach out and get some help from time to time. 
2  Using Arduino / Motors, Mechanics, and Power / Re: how to get started with stepper motors and hall effect sensors on: January 31, 2013, 01:06:12 pm
Thanks for the response.  I am trying to keep the machine as simple as possible so any of my guys can setup and operate it.  In my machine I used a gear motor to move the spindle around the template,  all the operator needs to do is set it in the center of the cutout and turn the power on.  It will spin around the template until he turns the power off. With each rotation I need to drop the spindle down about a 1/8".  I was thinking that a arduino powering a stepper motor or a gear motor that is triggered by a hall effect sensor or a momentary switch each time the spindle goes around would work well but I am completely clueless on where to start with the setup and coding.  I could really use some advice on how to get this accomplished.   
3  Using Arduino / Motors, Mechanics, and Power / how to get started with stepper motors and hall effect sensors on: January 30, 2013, 11:46:33 pm
I am trying to build a machine for cutting out sinks here at my granite shop.  I am pretty handy with the mechanical side of things but this is my first project to get involved using arduino.   I don't know where to start so i figured I would reach out and see if one of you out there could help me get this ball rolling.  I have built a machine that will rotate 360 degrees and follow a template of the sink cutout. What I need to do next is figure out the best way to incrementally drop the router bit down a specific amount after each rotation of the cutting .   I am thinking of using a stepper motor that would rotate a number of turns ever time a hall effect sensor would sense a rotation around the template.   If anyone has any suggestions i would appreciate your expertise... 

4  Using Arduino / Project Guidance / how to get started with stepper motors and hall effect sensors on: January 29, 2013, 10:34:36 pm
I am trying to build a machine for cutting out sinks here at my granite shop.  I am pretty handy with the mechanical side of things but this is my first project to get involved using arduino.   I don't know where to start so i figured I would reach out and see if one of you out there could help me get this ball rolling.  I have built a machine that will rotate 360 degrees and follow a template of the sink cutout. What I need to do next is figure out the best way to incrementally drop the router bit down a specific amount after each rotation of the cutting .   I am thinking of using a stepper motor that would rotate a number of turns ever time a hall effect sensor would sense a rotation.   If anyone has any suggestions i would appreciate your expertise...  
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