This is my first post to this forum. I have just built a new machine and am using an Arduino Uno R3 controller with a motor shield such as the one at this link:
I have used the jumpers as directed - a jumper over each Z pin so that I can clone the Z axis onto the A driver.
When I test, the motor connected to the A driver works fine, but I then have issues with the Z driver.
I use the Universal GCode sender and send the sequence of commands:
G0 Z1 Direction = UP, all good G0 Z2 Direction = UP, all good G0 Z0 Direction = DOWN, all good G0 Z1 Direction = DOWN, incorrect direction
You can see in the last step, that the direction is down instead of up. With all connected, this causes my 1 Z axis motor to move the Z axis up while the other moves down - not a good experience for my machine.
Can anyone please suggest what the issue could be here?