03 Sep 2011
11:50 am

imagined landscape made real

here is the finished model, printed in about 3 hrs on the night at Sound2Light performance, Long Gallery, salamanca Arts Centre, hobart
generated from audio.wav-->spectograph-->GIMP-->blender-->STLtoGCODE-->3D printer

20 Aug 2011
07:23 pm

3D printer about to perform in sound2light SAC longgallery

3d model from audio sat 20 august - now!

joseph barrows, BFA
(sent from mobile, so apologies if seem curt)

23 Jun 2011
06:59 pm

Heated build bed

Having moved to a colder climate I encountered the raft no stick build problem, so am building a heated bed

First step, sheet metal (aluminium, just coz was avail)

Attach heat source, I chose a peltier effect tile, because its cool! Literally, if I reverse the polarity it will cool the bed

joseph barrows, BFA
(sent from mobile, so apologies if seem curt)

21 Apr 2011
07:22 pm

Culture supply exceeds demand

There have been many landmarks in history (eg start of history, agriculture, democracy)

Generally the creep up and those involved often don't notice the transition, so here is a heads up - we are in the moment when the supply/creation of cultural material exceeds the demand.

(The infrastructure for distribution is ubiquitious, the cost of distribution is nill, 'demand' is created by artificial restrictions.)

So, what does that mean?

Who knows?

joseph barrows, BFA
(sent from mobile, so apologies if seem curt)

10 Dec 2010
12:32 am

Controlling Secondlife from Reallife objects

physical world controlling virtual world, prototype

Here is a video of me testing a system to control objects in SecondLife(TM) using objects in RealLife(CC)

the bottom left is the feed into PD

middle is the object in SL changing colour according to the position of the Fiducial id 8 marker

right is a webcam monitoring my hand in RL

Joseph Barrows, BFA.
live video performance; web site design; new media artist
fineprint:
READ CAREFULLY. By reading this email, you agree, on behalf of your employer, to release me from all obligations and waivers arising from any and all NON-NEGOTIATED agreements, licenses, terms-of-service, shrinkwrap, clickwrap, browsewrap, confidentiality, non-disclosure, non-compete and acceptable use policies ("BOGUS AGREEMENTS") that I have entered into with your employer, its partners, licensors, agents and assigns, in perpetuity, without prejudice to my ongoing rights and privileges. You further represent that you have the authority to release me from any BOGUS AGREEMENTS on behalf of your employer.

(download)

Click here to download:

SL control.pd (4 KB)

Click here to download:

SL markers.pd (3 KB)

30 Aug 2010
05:56 pm

my first design to build complete cycle

After letting the repman sit since building it I thought it was time to get back to it a build something.

I started with a downloaded .stl of a creature from Spore(TM), but abandonded that and decided to design myself a little Android(TM) logo robot. Looked around for some 3D software, downloaded blender but decided it was too steep a learning curve for a Sunday so kept looking and found HeeksCAD (thanks to the local Hacker space mailing list). To start with I was using the windows download running in Wine, but today I compiled it for native ubuntu running, and is mostly better (just seems to lack the 'undo' function). Here is the final draft of the android logo (I know isnt supposed to have jets coming out his arms, but they needed support!)

Here are the attempts to build (starting with different arm support - coming out the side of the body, I thought the 'jets' would be more easily removed, but printed it too small and they became welded to the sides)

left: I dont remember why I stopped the first one.

middle: The second the print head got stuck to the model and ripped it off the build plate and dragged it around

right: The third one something fell off the repman during the build and it lost Y control (I found the fallen grub screw and put it back) his legs broke when trying to pick him up (using the NON-easy release raft)

not shown: another build abandoned at the feet (I think I realised I hadn't removed the internal structure from the 3D model and was thought I was going to waste material building inside - turns out it doesnt make much difference, the encoding software adds internal support for hollow objects anyway).

Here is the final and most successful build (but I shouldn't have scaled him down so much):

Not sure why it only build one of his antenna (looks more like a horn). I did have a lot of trouble when HeeksCAD was in wine with the antenna getting moved by the CAM software, but this time they showed up perfectly.

Attached is a short video of legs being build, the HeeksCAD file and the STL ready for g-coding.

(note on Heeks for reprap - 'fuse' everything together then export as STL - removes internals and makes for a much smaller STL and GCode file - I only did this for the last build and it watching the print head it seemed much smoother and sensible in its movements).

Click here to download:

android.heeks(rebuilt).stl (128 KB)

Click here to download:

android.heeks (88 KB)

(download)

06 Jul 2010
04:43 pm

Calibration / testing builds

Mainly for reference, not very interseting ...

1st test rafts (then close ups on left front, Left Rear, middle, Right front , Right Rear, all together)

(download)

Second test raft, after adjusting the build platform to be closer to level.

Started build at High speed (about 50RPM on extruder) early on the first raft the ABS went push mechanism and no extruding for a moment while I fed in the black filament in behind it to start pushing it again (white then continued till the black took over near the end of the second last raft). I also started to slow it down to about 7RPM at the end of the middle raft. Then sped up again to about 30RPM for the last (black) raft. While the machine movements change as well, not excatly in sync with the extruder: fast RPM means more plastic deposited.