[DREXENG2015]

Hi all,

I have a nema 425oz/in stepper that I have already successfully controlled with the cnc-usb controller. I would now like to try to control it with an arduino uno board. Does anyone know how to wire the large black stepper drivers (with many different brand names and found on ebay) to an arduino uno?

Thanks!

[dmalicky]

If you are using GRBL, the + pinouts are here: https://github.com/grbl/grbl/wiki/Connecting-Grbl
The Uno's GND pin goes to DIR-, PUL-, and EN- on the driver. (PUL can also be labeled CLK or STEP).
A detailed example: Arduino Stepper Motor Control - Zen_Toolworks_Wiki

If using the Arduino IDE, it will depend on how the pins are defined in the sketch, e.g.:
Easy Driver Examples
https://www.sparkfun.com/tutorials/400

[DREXENG2015]

Thanks I figured it out! Now I have been just messing around with simple arduino sketches to make the motors do different things. I am hoping to use grbl, but I can't figure out how to install the thing.

[dmalicky]

To install GRBL:
- First get the "Master Branch" hex file (currently v0.8c) about halfway down this page: https://github.com/grbl/grbl
- Then follow these instructions, depending on your OS: https://github.com/grbl/grbl/wiki/Fl...-to-an-Arduino