eurobot-ohw
TRANSCRIPT
Wednesday, June 15, 2011
Josef PrůšaRepRap core dev
josefprusa.czflickr.com/prusajr/
@prusajr
Open Source self-replicating 3D printer
http://slidesha.re/eurobot-ohw
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• has to provide source how to make it
• must allow derivatives
• ...
• http://freedomdefined.org/OSHW
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• provides resources to learn stuff
• faster to develop - no patent hassles
• your thing is improved by others
• you can repair bought OHW by yourself
Advantages
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Arduino
• http://arduino.cc
• GPL and LGPL license
• 120 000 sold (Feb 2010)
(c) Arduino Team
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Derivatives
brmduino
boarduino
seeeduino
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Arduino crushed all thecommercial DEV boards!
And helped many peopleto start with electronic.
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Global Village Construction SetLifeTrac
Marcin @ OpenSourceEcology WIKI
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Global Village Construction Set
• goal to have 50 open source industrial machines
• http://opensourceecology.org/
• founder Marcin Jakubowski
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Open Source self-replicating 3D printer
http://reprap.org
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What is 3D printer?
• Additive processes vs. substrative processes
• 3D printing adds material instead of milling it away
• Technology is 30yrs old
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How does 3D printer work?
2D + 2D + 2D + 2D + 2D = ?????X
Y
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How does 3D printer work?
X
Y
Z
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Simplified principle
X
Y
Z
+
Cartesian robot Extruder+
= 3D printer
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My experience on RepRap project
Mendel
Prusa Mendel
I started in 2009 having no clue about HW and electronics!
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Free stress-less educationYou can learn what you want, when you want,
how you want. In my case:
No HW and electronics experience
Successful printer redesign
Book published by O’reilly
18 months
6 months
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2009 Mendel
• Smaller
• Faster
• Faster to replicate
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2010 Prusa
• Almost no bearings, using PRINTED alternatives
• Build time reduced to few days for newbies
• Half replication time
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In 3 years almost the quality of commercial printers
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New printers
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• nobody really knows, most of the printers are crowd-sourced
• Erik de Bruijn estimated in his thesis between 3872 and 4840 people in the community (October 2010)
• But what we know for sure, community grows exponentially!!
Number of printers
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Printable objects are easy to be open
sourced
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photo by root.cz
First ever working open source
glasses?!
GPL v2
http://bit.ly/prusa-glassescost to print - 2€
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Upgrade in few hours
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Printable lathe
http://www.thingiverse.com/thing:9242
by sublime
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Infinite modularity,thanks to openness
by Unfold
printed pottery
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http://thingdoc.org
Documenting OHW
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PCBs
Printable parts
Lasercutparts
SimpleHow-tos
We are living in the internet of things
That means, we can share real Hardware online!
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We just don’t know how to organize it
...yet!http://thingiverse.com - messhttp://instructables.com - even more mess
...
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You can publish only completed projects. With hand tailored
documentation.Software has better solutions!
They can make documentation automagically!JavaDoc, PHPDoc, ...
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ThingDOC solves that!It can generate your HW project documentation.
Works on simple text comments.Printed parts, lasercut parts, ...
ThingDOC is being developed on PrusaMendel RepRap parts.
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Generator isn’t lazy!Normally you have to change documentationwith every update of the design! Thats hard
if documentation is long as small book and you update the design twice a day!
It causes:
1) Errors2) Out of date documentation3) Demotivates to update design often4) If you use wiki, its hard to find older documentation
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Forking is hard!
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With ThingDOC every thing in project has it’s own info about properties and relationships!
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So when you update or switch one file, you still can get full
featured documentation!Means:
Easy forking! Easy updating!
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Documentation is hyperlocal!
Informations about the object are embedded in the same file!
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What ThingDOC can do?
• Bill of materials
• Info about things
• Assembly instruction
• Structured data of your project
All in many formats! HTML, TXT, PDF, WIKI ...
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Interactive bill of materials
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Interactive bill of materials
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Things overview
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Assembly instructions!BEST!
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Works on mobile devices!
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From what it generates this awesomness?
Small comments like these!
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Monetizing OHW
• selling kits - Sparkfun, Ladyada
• selling consulting
• selling support
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Thank you
http://josefprusa.cz@prusajr
OHW and 3D printingconsulting
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