http://www.reprapdiscount.com/electroni ... tible.html
That is a little crazy if you ask me.
Will ya look at that.
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bvandiepenbos
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Re: Will ya look at that.
Whoa! am I reading that right 128 microstep driver?
And you can fasten it to the back of a NEME 17 motor.
wonder if you can drive it with a Rambo?
And you can fasten it to the back of a NEME 17 motor.
wonder if you can drive it with a Rambo?
~*Brian V.
RostockMAX v2 (Stock)
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RostockMAX v2 (Stock)
MAX METAL "ShortyMAX"
MAX METAL Rostock MAX Printer Frame
NEMESIS Air Delta v1 & v2 -Aluminum delta printers
Rostock MAX "KITT" - Tri-Force Frame
GRABER i3 "Slim"
Re: Will ya look at that.
I really dont understand this whole microstepping thing. There is only so many coils on the stepper motors..... 
http://www.youtube.com/user/aonemarine" onclick="window.open(this.href);return false;
Lost pla castings? see me
Lost pla castings? see me
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jdurand
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Re: Will ya look at that.
Steppers were originally designed to be run in full steps. They're very accurate that way but you only get around 200 steps per revolution.
Then most of us went to half stepping where you power on both coils at the same time in different states that gets you twice as many steps but the torque varies with which step of the sequence you're on. Also, as the coils and drivers aren't exactly identical, the size of the steps will vary coming back into sync every full step.
By fractionally driving the coils you can get as many steps as you want, but you still have the same varying torque and accuracy problems. Always coming back to accuracy on each full step.
Then most of us went to half stepping where you power on both coils at the same time in different states that gets you twice as many steps but the torque varies with which step of the sequence you're on. Also, as the coils and drivers aren't exactly identical, the size of the steps will vary coming back into sync every full step.
By fractionally driving the coils you can get as many steps as you want, but you still have the same varying torque and accuracy problems. Always coming back to accuracy on each full step.
Standing on the edge of reality... (me)
Quando omni flunkus moritati (Red Green)
Let no man belong to another that can belong to himself. (Paracelsus)
All things are poison and nothing is without poison; only the dose makes a thing not a poison. (Ibid.)
Quando omni flunkus moritati (Red Green)
Let no man belong to another that can belong to himself. (Paracelsus)
All things are poison and nothing is without poison; only the dose makes a thing not a poison. (Ibid.)
Re: Will ya look at that.
DavidF wrote:I really dont understand this whole microstepping thing. There is only so many coils on the stepper motors.....
This is informative: http://www.micromo.com/microstepping-my ... -realities