Robotic Exoskeleton

July 8th, 2008

Let me just give you an impression of the robot exoskeleton I and some other people (don’t want to reveal too much at this point) have been working on for some time. We’re not finished at all, and what you can see in the video is the person controlling the skeleton and not the other way round, because the motors did not wanna work today …. Anyway, I guess you already got it: the movement of the person in this suit is going to be controlled by someone else …


height="255" codebase='http://www.apple.com/qtactivex/qtplugin.cab'>

controller="true" loop="true" pluginspage='http://www.apple.com/quicktime/download/'>

Environment Problems with Macports (PB G4, OS X 10.5)

July 6th, 2008

I’m running OS X 10.5 Leopard on a G4 PowerBook, and I was having some issues making Macports work.

When i installed from GUI, using the Macports 1.6.0 .dmg version, at the end of installation I got something like “Installation Failed” which I slowly figured out to possibly be due to problems with my bash environment, since it was the post-flight script at the end of the installation process which could not be executed correctly - setting the PATH and MANPATH values is one of its jobs. This got affirmed by my bash environment missing the required settings.

Changing those manually usually is quite easy. On opening a bash shell, the .profile script would be executed. It would contain two Macports-related lines, namely:

export PATH=/opt/local/bin:/opt/local/sbin:$PATH
export MANPATH=/opt/local/share/man:$MANPATH

Anyway, this did not work on my system. I miss the .profile file at all, and creating it with the required entries does not change a thing. Leopard seems to have brought some changes that other users were experiencing as well. Actually, there is some posting on this issue, but it’s mainly inconclusive. On my friend’s machine (10.5, Intel) it just seems to work that way. So the problem seems to lie in the fact that different systems can have different bash scripts (~/.bash_profile, ~/.bash_login, ~/.profile …).

That all really confused me. Fortunately, I met the mighty Christoph Lischka yesterday ^^. My problem is solved now, Macports up and running, my mind can peacefully flow over with what I found out:

The bash startup scripts are executed in this order: First, the /etc/bashrc, which is a system-wide setting and which I was recommended not to change at all. Second, ~/.bash_profile. Anyway, the X Windows system evaluates ~/.bashrc first. So here’s what the latter two files look like now:

~/.bash_profile:
source .bashrc

~/.bashrc:
export PATH=/opt/local/bin:/opt/local/sbin:$PATH
export MANPATH=/opt/local/share/man:$MANPATH

Morton Shumway, Item, Patterns & The Falcon Five

June 28th, 2008

Oi mates, thanks to all of you for being so kind and open towards all the things out there and inside (oh, and in between, too ^^)!

So let’s see what’s going to happen next:

flyer

Morton Shumway playing at RAUM 25 C, Cologne, Friday June 27th

June 21st, 2008

––>RAUM 25 C<––

raum 25 c flyer front

raum 25 c flyer back

Morton Shumway - Ibizan Street Dirt

May 21st, 2008

Getting even deeper into the music thing I present you an already classic mix.

Ibizan Street Dirt is a suspense-packed all-thrilled lameish pack of haptic funk - the media is the streets, so we find some dry, flirritating non-clash of reduced (neo-)detroitish to romantic styles, taking long transitions to then amount to a deep and dirty breakdown of unprecedented intensity.

LISTEN HERE

  1. James DIN A 4 - Lucifer Rising
  2. W.B. - Gottogoaway
  3. Marathon Men - Sweet Exorcist / Peter Ilyich Tschaikovsky - Coffee (Arab Dance)
  4. Dave Ellesmere - Grid Variation
  5. Audio Werner - Str8St8mnt
  6. Shed - Supa
  7. 2000 And One - Point of No Return
  8. Darko Esser - 13 (Noc)
  9. Gas - Untitled
  10. Peter Ilyich Tschaikovsky - Coffee (Arab Dance)
  11. Krause Duo Nr. 2 - Kristallsemmel
  12. Omar-S - Day

Morton Shumway - The Inner Space Disco

May 17th, 2008

This wonderful little label Getting The Story Straight just came up with its third release so far.

Disjunctive ecclecticism, as found in Ibizan Street Dirt (GTSS001) and What Makes The Possible Real (GTSS002), rules this slow paced, round and sensitive mix consisting of elements from Space Disco, Material House, Reality Computing and Popular Music.

LISTEN HERE

  1. Mono Puff - Pretty Fly
  2. Talking Heads - Born Under Punches (The Heat Goes On)
  3. Iz & Diz - Love Vibe (Pepe Bradock’s “Confiote De Bits” Remix)
  4. Mono Puff - Pretty Fly
  5. Quarks - Fallen
  6. Hosomi - Kumorizoranohajimarutokoro
  7. Björk - Jóga
  8. Mice Parade - Double Dolphins On The Nickel
  9. Asa-Chang - Kutsu #3
  10. Morgan Packard - Airships Fill The Sky
  11. Morgan Packard - Mink Hills
  12. Yumi Kimura - Always With Me

The intense climax is reached in the second half, when layering Hosomi and Björk creates a surprising tension. The momentum, then, just carries on, as this beautiful Mice Parade song is even more intesified by Asa-Chang’s trumpet play, anti-climaxing into two accordions from two different tracks, together breathing along, making lots and lots of space for the Mink Hills, when it’s nearly time to say good-bye already …

So keep your eyes open, your ears, that is.

Digger Barnes, Hungreeman and Morton Shumway live

May 8th, 2008

Dear friends,

this is going to be unbelievably nice – those of you who attended the party at Patrick’s place last Saturday know what I’m talking about (cf. this post in Morgan’s blog).

Morton Shumway’s again going to play, too. You know what that means if you recently asked yourself why those crazy party people use to shout out “Africa!! Africa!!” these days.

flyer

morton shumway

Morgan Packard live in Cologne

April 29th, 2008

May 2nd, 2008, Morgan Packard will give a concert at FYW (Cologne Ehrenfeld). Please see flyers below.

Together with Ezekiel Honig, Morgan Packard released on acclaimed Microcosm Music NY (alongside Miskate et al. taking a naturalist, or corporeal turn towards sampling in electronic (dance) music), later on Anticipate Recordings which through his album “Airships Fill The Sky” and releases by Ezekiel Honig, Mark Templeton, Klimek, and Sawako became co-defining for contemporary music – don’t miss the freely downloadable Summer Tour Remixes!

Airships Fill The Sky, by employing instrumental elements, sampling and synthesis – i.e. representation, performance and simulation – poses questions about relations between sound, music, nature, motion, feeling, technology and mind. Packard plays the accordion in a way that investigates material properties of the instrument in an expressive context – the instrument not mainly as a tool to express artistic or musical concepts, but as a body expressive of itself, of its physical properties and meanings, which cannot just be infererred by myself and applied to an otherwise dead matter, but are in direct relation to this thing, and of homologous properties of a human body – the instrument breathes, feels, as I synchronise my breath, my feeling.

Here, already, simulation takes place: Myself as a mind–body, capable of conveying a universal connection between sense and matter, cannot only acknowledge the expressiveness of the instrument and the processes that surround it, but I can reflect and describe all this (what I maybe need representational power to) in order to communicate. This becomes possible as feeling is in all things, and breathing in it’s meaningful, expressive aspects relies on my knowing about how it feels to have a body which breathes.

Thus, the instrument becomes part of myself in a twofold sense: its breathing as breathing is simulated in my capability to abstract from my own concrete bodily states and draw the meaning of a thing breathing from my own breathing (it breathes through myself, or technically: I run a simulation of it breathing on my hardware, which is not all that ‘hard’, as it/myself knows about breathing); and my own breathing as breathing becomes realised in the instrument, i.e. the instrument is an integral part of my conception of breathing, of its meaning, of what it is for myself.

Sure, there’s a stricter way to grasp simulation, which we encounter when we meet the natural beauty of the simulacrum. To make it clear, hearing the sound of SuperCollider determining the synthetic aspects of Packard’s music is bliss. But apart from this production esthetics, the simulational power of SC presents us a dynamic representation which is becoming natural – it’s arguable whether this would be representational at all, and also, whether I assume too much about the actual simulational effects here. What I hear is the following: imagine a field of hollow bamboo canes as they could be used to build panpipes. Some of them touch one another, others stand apart from one another, imagine now a process that partially blows, partially shakes these, namely with a dynamic that reminds of unsteady, but strong and playful wind rattling at your door, shaking the bamboo façade of your cozy shed.

Again we are confronted with a very much material, dynamical and sounding process, but this time probably without a body proper in the first place. Again, we do not seem to deal with an absolute disembodiment here, but with a simulation which does not consist in an irreality or disembodied virtuality, but in a virtuality consisting in ourselves which can be realised though this very simulational process.

Luckily, as I am not capable of giving a complete account for what makes me appraise Airships Fill The Sky in this manner, I will stop here. Hope to see you on Friday!

Thanks to cramo for making this happen!!

See Morgan Packard’s webpage, where you can also download the SuperCollider instrument – thanks, Morgan!

Wiimote and Darwiinremote to Control Powerbook Volume

April 27th, 2008

For a long time, but without success, I tried to get my Wiimote to work as a volume control for my Powerbook G4. The problem with the free software Darwiinremote always was that mapping the volume keys to Wiimote doesn’t seem possible.

That problem is partially solved now. The free software PTHVolume lets you define any other shortcut which can then be mapped to Wiimote using Darwiinremote.

Still, it’s not perfect. PTHVolume misses a customisable shortcut for the option-shift-volume combination which under 10.5 Leopard controls the volume in smaller increments. And, but that’s only an aesthetic issue, you can’t hide the PTHVolume icon from the menu bar as you can do with the normal volume icon.

Anyway, find PTHVolume here, and Darwiinremote here.

Quicksilver for OS X

April 27th, 2008

Quicksilver for Mac OS X is a launcher very much based on keyboard input.

It works by bringing up an alt-tab-style menu via a definable hotkey combination and a search algorithm for finding items matching your input, which works almost instantly. Define which parts of your system are searched, so it’s fine to just serve for starting applications.

You can get much deeper into it, though. Do not only display applications, but any objects. Do not just launch, but use any other action in an application or on an object. Query an online dictionary for input text. Email a paper to your friend. Do it all with just a few keystrokes.

You can find the freely distributed software here.

Dan Dickinson’s blog presents a lovely introduction to using the code.

Morgan Packard live in Cologne

April 23rd, 2008

flyer morgan packard

Podcast on Robotics and AI

April 22nd, 2008

Laboratory of Intelligent Systems at EPFL Switzerland provides the series Talking Robots.

Here you will find all the big names chattering away on your favourite topic in HRI, Robotics, and AI.