DIY L298N Controller with GRBL Wiring Question??? - CNCzone.com-The Largest Machinist Community on the net!

Rymanvw · #1 08-01-2011, 09:01 PM

Hey guys,

I've been designing/building a small arduino controlled cnc machine now for a few weeks and I am now trying to get my arduino with GRBL loaded on it to move my stepper motors. The issue I am having is that grbl uses only step and direction connections to operate the steppers. Before I was using the arduino stepper library using the step command stepper(STEPS,pin1,pin2,pin3,pin4) connected to the respective pins on my 4 wire bipolar stepper motor. This is the wiring schematic I was following. Wiring Schematic

Could someone please provide me with an alternate wiring schematic with only step and direction pins. Do I need different components? Do I need a L297? Please help so many sleepless nights... Thanks.

-Ryman

doorknob · #2 08-02-2011, 03:51 AM

An L297 would translate step and direction outputs from the grbl to the coil energization sequence required for the input to the 298.

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