Python dans la fabrication numérique et l'impression 3D

Meetup Python Nantes février 2018

Arthur Lutz

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Disclaimer

don't do this at home

I do this at home

not my day job

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Programme

• introduction (vectoriel, commande numérique, etc.)

• conception avec python (inkscape, blender, freecad)

• l'impression 3D (cura, octoprint, printrun)

• la découpe laser (Laserengraver_smoothie)

• prototypage electronique (micropython, wipy)

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Introduction

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Scalable Vector Graphics (SVG)

• dessin vectoriel

source wikipedia

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Gcode

• http://reprap.org/wiki/Gcode
• https://en.wikipedia.org/wiki/G-code

G90 ; use absolute positioning for the XYZ axes  
G1 X10 F3600 ; move to the X=10mm position on the bed  
G1 X20 F3600 ; move to X=20mm

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Impression 3D

• dépots par couches de matière
• https://fr.wikipedia.org/wiki/Impression_3D

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Extrusion 3D

• retrait par couches de matière
• découpe d'un matériaux
  • (par exemple les "foam cutters")

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PCBs

source: wikipedia

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Conception

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inkscape: de l'image au SVG

(pas en python)

Ouvrir l'image > Path > Tracebitmat

• sans inkscape (en python): https://github.com/flupke/pypotrace

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du SVG à la découpe laser

http://fablabo.net/wiki/Raster2Gcode

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inkscape & python

• extensions en python (et aussi en perl, ruby, shell)

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inkscape: du SVG à la 3D

Paths to OpenSCAD

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inkscape : extensions

http://wiki.inkscape.org/wiki/index.php/Extension_repository

• ImprovedGears
• InkscapeLasertcutBox
• Gcode tools (inclus dans inkscape)

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blender & python

https://docs.blender.org/api/current/

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freecad & python

• https://freecadweb.org/wiki/Python_scripting_tutorial
• https://www.freecadweb.org/wiki/Scripting_examples
• http://fablabo.net/wiki/DéScripthon

View > Panels > Python console

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Freecad exemple

import Part

doc = FreeCAD.newDocument()
myshape = Part.makeSphere(10)
shapeobj = doc.addObject("Part::Feature",
                         "MyShape")
shapeobj.Shape = myshape
doc.recompute()

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Freecad copie d'écran

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openscad & python

https://github.com/SolidCode/SolidPython

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Autres

• CAD en python http://www.pythonocc.org/
• Broderie en python https://github.com/Embroidermodder/Embroidermodder
• Doodle3D https://www.doodle3d.com/

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python & impression 3D

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Printrun

http://www.pronterface.com/

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Cura

https://ultimaker.com/en/products/ultimaker-cura-software

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Cura - sous le capot

• Uranium (python3, qt5, numpy, etc)
• CuraEngine (C++)
• PySerial Only required for USB printing support.
• python-zeroconf Only required to detect mDNS-enabled printers

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Octoprint

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Plugins Python pour Octoprint

• https://plugins.octoprint.org/
• plugins getting started
• plugins cookiecutter

import octoprint.plugin
# ...
__plugin_name__ = "My Plugin"
def __plugin_load__():
    # whatever you need to do to load your plugin, 
    # if anything at all
    pass

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(prototypage) éléctronique

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kicad

http://kicad-pcb.org/

• scripting dans kicad

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fritzing

http://fritzing.org/

fritzing-parts (scripts python) : https://github.com/fritzing/fritzing-parts

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fritzing to 3D print

https://github.com/fritzing/fzz2scad

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micropython

https://micropython.org/

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micropython - conférences

• [pyconfr 2015] diapos introduction micropython - Arthur Lutz
• [pyconfr 2015] video introduction micropython - Arthur Lutz
• [pyconfr 2017] Comment débuter avec MicroPython - Hugo Herter (video)

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wipy

micropython sur ESP avec du wifi

https://pycom.io/

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micro:bit

http://microbit.org/

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micro:bit & python

https://python-editor-1-0-0.microbit.org/help.html

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raspberry pi & python

GPIO !

• https://www.raspberrypi.org/documentation/usage/gpio/
• gpiozero
• physical computing projects
• python quick reaction game

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from gpiozero import LED
from time import sleep

led = LED(17)

while True:
    led.on()
    sleep(1)
    led.off()
    sleep(1)

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Bonus : Mission Pinball Framework

• http://missionpinball.org/
• pip install mpf

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Fin

à vous!

questions / suggestions

Contacts :

• mastodon : @[e-mail]
• twitter : @arthurlutzim
• https://arthur.lutz.im/
• [e-mail]