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Stepping Motor Driver (24-70 volts DC, up to 6.0 amps, microstepping from 1/2 to 1/256)
$94.95
Introduction:

This driver is usually paired with the NEMA 34 stepper motors. The driver will allow the motor a maximum of 6.0 amp draw. - Datasheet

Description:
Related Tutorials
Step 21: Driver Caps, Resistor Networks and Mosfets
This tutorial is dated, if you are considering a CNC for your personal use, we would highly recommend purchasing a kit that is very stable from our wide range of machines available. The resistors are in, right? Ah, I know, you want to see the complete assembly before you dig in. Ok, on to this part of the assembly. Please don't ask me what Mosfets are, but the word sound cool! I can tell you that they stand for Metal Oxide Semiconductor Field Effect Transistor. I have personally read about fifty descriptions of this electronic animal and I still can't figure it out. It doesn't say much for a Berkeley grad! Well, I'm open to some plain English interpretations without the word "drain" in them. Are you still with me?
Step 20: Stepper Driver Part 1 - Resistors
This tutorial is dated, if you are considering a CNC for your personal use, we would highly recommend purchasing a kit that is very stable from our wide range of machines available. Well... here we are, finally getting started with the electronics portion of the video series. The entire structure of the CNC machine is complete with the exception of the router mount. We will get to that a little later. For now, we will start on the assembly of the HobbyCNC 3 axis chopper unipolar stepper driver.
Thumbnail: USB Controller wired to one driver and one stepper motor Wiring the CNC Motion Electronics with the USB Interface
Here is a tutorial on connecting drivers and stepping motors to the USB Interface for CNC machines. We offer the USB interface/controller for those that have a laptop, or don't have a parallel port on their computer, and who prefer to use the Planet-CNC software. Here I show a video on the entire process to get your USB Interface connected to the stepper drivers and stepper motors correctly and in a simple and trouble free way.