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Cartesian pen plotter

Posted by Vojta_Vojta 
Cartesian pen plotter
January 19, 2025 10:27AM
Hello,
I've decided to build a cartesian pen plotter that will have a work surface the size of A4 paper. I am attaching a picture of the 3D model to give a better idea.

For X axis movement NEMA17 with trapezoidal threaded rod and linear guide with carriage.
The Y axis is double, otherwise the same as the X axis.
For Z axis movement I use an MG90S micro servo and linear guide rods and linear bearings.

The endstops are installed as follows:
X_min and X_max
Y1_min, Y2_min and Y1_max
For the Z axis I have not planned the endstops yet, as I think they are not needed since I am using a servo.

I already have the design done and have started with the marlin configuration, which I am a bit lost in.

I have set up, driver types, extruder setup, power supply, temperature sensors etc I skipped. However, I couldn't find anywhere to set the dual Y axis and set the Y2_min to the Z_min connector on the Ramps 1,4. Overall, maybe this firmware is a bit overkill for my needs, there are many features in the cofiguration that I won't even use. Which makes me a bit confused in the cofiguration.

How do I set up the dual Y axis and endstops correctly?
Should I try to reconfigure the Marlin, or should I look for some other alternative?
Is there a Marlin configuration for at least some similar device? As far as I looked, unfortunately I couldn't find anything.

Thank you very much for any recommendations and advice.
Attachments:
open | download - SnĂ­mek obrazovky 2025-01-15 010623.png (850.9 KB)
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