Manually control axis of MPCNC

Dear community,
i use a CNC shield (link) to control my mosttly printed CNC. As a software i use estlcam. Everything works so far, but i would like to do some upgrade to manually control the axis without using estlcam.

In the upper left corner of the CNC shield are some PINS like x.step/dir (see image in link above). As far as i understand these can be used for directly interacting with the motors of the different axis. But i am not sure, how the signal that goes in here should look like. Is it enough to put a poti in between? Could anybody give me some support here.

kind regards,
Matt

Those header pins directly connect to the driver step and dir pins. The step pins take step pulses and the dir pins take a level to set the stepper direction of rotation.

No, a pot will do nothing.

You can write your own code to control the steppers, but it would replace the existing Estlcam controller firmware.

Here is the pin mapping of the CNC shield to Uno pins.

What exactly do you want to do? Maybe I can help.

Dear Ground_Fungus,
thank you for you fast reply.
I would like to use a joystick to control x and y directiion and a wheel to control z direction. Kind of input signal instead of using the buttons in estlcam.
Should have written that in my first message. Sorry!!

Kind regards,
Matt

Do you want to do that in addition to using estlcam or to replace estlcam?

Modifying estlcam would be difficult.

What controller firmware (grbl, marlin) and gcode sender are you using?

You can add a pendant to grbl. Do a search for "grbl pendant".

Yes, i wanted to leave the estlcam as it is. Just to have the additional option to control x,y and z via some control hardware like a joystick. As easy as possible. I use grbl and the 3dmodel / G-Code comes from fusion360.

From what i saw about googel results for "grbl pendant" is exactly what i need. I look into this. Thank for this tag!! :slight_smile:

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