Using cnc shield v3 on arduino.
I want one motor to work in reverse.
as i know reverse mode is that pins.
(i tested on my board what pins are this on arduino and it is . pin 2 and pin 5)
when i am shorting these pins. The motor reversed but it`s working in only one direction . 
Any ideas?
Why short step and dir? It makes no sense.
Maybe i am completely wrong but, What should I do to do that?
Could you please post a link to the board, and a schematic of how you have connected everything?
This is my board. it`s just work fine.
I want to add an additional motor which will work in reverse.
that all
P.S
I'm also curious what these pins are for?
Thanks for posting a picture of your board.
But what is needed is a link to the board and its data sheet.
And since you have one motor running, could you please post the code in code-tags, per forum guidelines?
Typically, a stepper motor speed and direction are controlled in software.
If you want to use those 8 pins for something other than Step and Direction pins, this is a good place to connect to them. Just leave out the stepper driver for that axis (for example 'A') and connect wires to those two pins that now don't go to any hardware.
If you want to reverse the direction that a motor turns, reverse the connector where the cable from the motor connects to the driver.
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