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Creality Falcon Penplotter

Because Creality missed the low hanging fruit

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Since pen plotter are for some reason more expensive than laser engraver I decided to hack a Creality Falcon.

Features:

* Laser function should still be available
* Laser and pen plot should be completely separated
* No need to mechanically change things
* No need to swap heads.

I wanted a pen plotter which can plot on  at least A3, since my A4 iDraw (axiDraw-ish) is nice but somtimes bigger is better.
Unfortunately pen plotter get pretty costly fast. 

Diode laser engraver, those with safety third though

  • are dead cheap (cheaper than the materials needed for a gantry of the same size).
  • are 90% of a pen plotter.
  • come with support for laser cutter software (Lightburn, LaserGRBL) instead of some inkscape plugins.

So my plan, since that's what I told a lot of folks over the last years anyway:

  1.  Get a cheap laser engraver.
  2. Throw a lot of time and electronics towards it.
  3. Get a pen plotter which isn't cheaper than a bought one in the end, but at least don't need some inkscape plugins.
  4. Ideally the machine can still be used for laser engraving. 
  5. It would be really cool if 4. would be possible without a lot tool changing.


And maybe at the end I get a kit which others can buy / build by themselves.

  • Mechanical Setup

    Tillo09/15/2025 at 20:51 0 comments

    Base

    I used a piece of wood which is 60x60cm. 

  • Issues / Hints for your build

    Tillo09/15/2025 at 20:48 0 comments

    Lightburn / Plotter issues

    Plotting stops after a few lines

    After some hours I found out that their Lightburn profiles are actually not working properly. Needed to test out all the different GRBL dialects.

  • Pen Z axis

    Tillo07/26/2025 at 15:17 0 comments

    Problem: 

    Cheap diode laser don't have a Z axis motor, the gCode neede for them also usually don't have Z axis values. So how can I lift the pen when needed? For most problems, somebody already came up with a solution, though...

    Solution (Software):

    After some research (5 min of googleing) I found that thread on reddit:

    https://www.reddit.com/r/PlotterArt/comments/1faix70/comment/n3kuu1u/?context=3

    Where somebody already did something in CircuitPython on a RasPi Pico:

    https://shibumee.com/harry_plotter/

    So I did some tests with a XIAO RP2040 and it looked great.

    Solution (Pen holder):

    The harry plotter needs a lot of 3D printed parts, also for the pen holder. While doomscrolling on AliExpress I found a complete pen holder assembly with for way less than my nerves would have costed in the same time. So I just ordered that.

    Solution (Electronics):

    I wanted to make a small PCB though, which allows for switching between laser and plotter using a relay. I should be small so I went for a XIAO RP2040 instead of the Pico. (see files)

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