Making a SERVO DRIVEN Z-AXIS for my 210x297mm arduino CNC pen plotter 

For quality PCB manufacturing services check out: www.pcbway.com/ ! They currently have their anniversary sale going on and I ended up having a gig on their website, lol! www.pcbway.com...
Time for part 4 of the pen plotter series!!! The Z-axis/pen holder on this unipolar pen plotter is driven by one of the ubiquitous SG90 9g RC servos instead of a stepper motor like on the X&Y axes, mainly for simplicity of the grbl version we're later gonna use as firmware on the arduino. What ended up not being simple, was the physical fabrication of the Z-carriage itself - my design based around linear rods was actually way more challenging to build than anticipated, requiring quite high level woodworking skills. I guess that's something I need to revisit at some point, lol.
If you plan on building a similar plotter, please consider supporting my work on this channel by purchasing parts via these affiliate links:
Stepper motors & drivers:
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RC servo:
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Arduino clone:
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And like I said the other day, after subscribing and leaving a like on every episode of this pen plotter series you can download the CAD model here:
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it's a google sketchup file so you'll need sketchup 8 (free) to open it:
www.malavida.c...
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