Autosquare calibration

Mostly Printed CNC - MPCNC Troubleshooting
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I have finally got everything running smoothly and the time has come to calibrate the machine. I ran a gcode to make a 300mm x 300mm (my machine can jog up to 550mm x 550mm but didn’t have such a big paper to print on). The square came out OK but I couldn’t understand how to calibrate from the instruction in the auto square part. For that reason, I am including the square that the machine produced (printed counter clockwise):

 

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Can you please let me know the offsets that I need to set?

Just an FYI, the end stop that goes onto the belt was not working properly for me (too loose so that had a flop and was not getting consistent result). For that reason, I designed a stop that should help me get consistent stopping distance:

Here’s my X Y motor mapping:

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TIA :slight_smile:

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So you can either offset your X2 or Y2 stepper by a little bit.

I can’t think of an easy way to know which one but, offset one if it gets better go further, if it gets worse reset and offset the other.

Edit-You can only offset X1 or Y1, so you need to move the X2 and Y2stops back.

1 Like
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Thanks Ryan. Offsets limited to just X1 & Y1 makes sense; I couldn’t figure out how I can set the offsets for X2 & Y2.

Just to make things easier, should I just switch the wiring (making X2 -> X1 and X1 -> X2 and same with Y) to make setting offset easier? From the look of it, it seems like most time, you need to offset the right hand side.

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Hmmm, That should work as well. Good idea.

1 Like
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Sweet. I will do that. Thanks :slight_smile: