AR Design Challenges

15.06.2011 by Michael

Just a short part of a presentation (German) about design challenges in Augmented Reality.

AR_Design_Challenges (PDF)

My Dog Light Writing “Makers”

13.06.2011 by Michael

Mounting 5 LEDs on a moving object creates one of the cheapest and largest displays: Persistence of Vision. It’s been done on bicycle wheels, fans and other rotating objects.

In this project i am sewing a Lilypad wearable Arduino board and five LEDs with conductive thread on my dog’s shirt. She (Ianto) is a Miniature Pinscher running very fast for fun. In curves fast enough for Persitence of Vision. And she likes running in large circles in the park! Light writing.

I chose Cory Doctorows “Makers” for her writing with light. It’s one of the most influential books i read in the last years. A book about our generation of Makers set some month / years in the future. And Cory released it under Creative Commons license. Thus anyone can remix it.

This is a remix in light.

The hardware:
5 Sparkfun LilyPad LED Bright White
Sparkfun LilyPad Power Supply
Conductive Thread

Sewing conductive thread i kind of tricky. It took some time until i got used to it and the stitches got straight. I even got some short circuits because crossing plus and minus threads too close. But meanwhile i prefer it over soldering.

Source code: LilyPOVText.pde

Thanks to Birgit for the shirt and Ianto for running around.

Hack a day

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.

Motion Bank: Deborah Hay 3D Prints

29.05.2011 by Michael

My first sketches in the Bill Forsythe’s Motion Bank project. A collaboration between Fraunhofer IGD and HfG Offenbach.

We recorded Deborah Hay performing her “No Time to Fly”, extracted her silhouettes and printed a 3D sculpture at Shapeways.

blnk: Solar Ping Pong Ball Dot Matrix Display

23.05.2011 by Michael

The right perspective is necessary to read the message. Blink, don’t blink.

My latest experiment with dot matrix light installations. It’s much simpler than Shadow Meadow and Fireflies. I am working with only two layers of dots instead of a random number of layers. Thus i don’t need to calculate reverse 3D projection.

The pixels of the 5×3 dot matrix type are arranged in two layers on a grid. Thus they are only readable from a position in front of them. Viewed from other position looks like random arranged light dots of a led chain.

Thanks to the solar led chain blnk can be placed anywhere. It charges by day and glows by night.

Solar LED chain (20 €)
Metal grid (5 €)
Ping pong balls (12 €)


Thanks to:
Instructable Ping Pong Ball Lights
Wikipedia 3D Projection

Shadow Meadow Variations

23.05.2011 by Michael

These are 3D simulations and 3D prints of my “Shadow Meadow” concept. Dot matrix type generated by apparently random arranged light dots and obstacles casting shadows.

Fireflies (IKEA Allsang solar lights)
WebGL / X3DOM simulation (requires latest Chrome or Firefox 4)


Shadow Meadow
WebGL / X3DOM simulation (requires latest Chrome or Firefox 4)


Shadow Meadow 3D printed by Shapeways (OK)

Hirai vs. Takahashi

20.05.2011 by Michael

Looks like Sony Playstation CEO Kazuo Hirai’s press team had a look at Johnny Mnemonic..



Images by Sony & TriStar Pictures

Kinect Experiment: Freezing Han Solo

29.04.2011 by Michael

Princess Leia’s hologram message has already been recreated with Kinect. So Jens and i chose Han Solo frozen in carbonite.

This is an experiment with Kinect and Processing. People in front of it are posing like Han Solo and get frozen in 3D. We are already exporting the 3D models for 3D printing. So stay tuned. The software will be open source soon if anyone is interested.

Thanks to Sabine, Patrick, Manuel and Ianto for posing. Daniel Shiffman for the openkinect library. And NIN’s creative commons album “The Slip”.

Make Blog
The Creators Project

Download the application (OS X) and source code (Processing):
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License.

Flickr Album of the 3D Prints:




Restart Capture (Kinect):

Restrict depth of Kinect:
q: minDepth += 10
a: minDepth -= 10
w: maxDepth += 10
s: maxDepth -= 10

Cut left and right:
f: cut_l -= 5
g: cut_l += 5
v: cut_r -= 5
b: cut_r += 5

Move camera in z:
+: move_z += 10
-: move_z -= 10

Move model in z:
e: model_z += 10
d: model_z -= 10

LilyPad POV: My dog has a display

06.03.2011 by Michael

There are the first experiments with Arduino LilyPad, Persistence of Vision (POV) and my dog. When its running the flickering LEDs are writing words in the dark.

I used my old POV example for Arduino.

Next is the Bluetooth connection to my Android Nexus S to change the words.


31.01.2011 by Michael

A thought about technology dependency:

The victim sits on the cobblestones clutching his aching temples. What happened? he wonders. The universe is a brightly colored blur of fast-moving shapes augmented by deafening noises. His ear-mounted cameras are rebooting repeatedly: They panic every eight hundred milliseconds, whenever they realize that they’re alone on his personal area network without the comforting support of a hub to tell them where to send his incoming sensory feed. Two of his mobile phones are bickering moronically, disputing ownership of his grid bandwidth, and his memory … is missing.

A tall blond clutching an electric chainsaw sheathed in pink bubble wrap leans over him curiously: “you all right?” she asks.

“I –” He shakes his head, which hurts. “Who am I?”

Accelerando by Charles Stross

Zero History

28.11.2010 by Michael

“If I were better at this sort of thing,” said Hollis, “I’d start by telling you about my book. It’s about locative art.”
“I don’t know the term,” Meredith said.
“It’s what they’re calling augmented reality now,” said Hollis, “but art. It’s been around since before the iPhone started to become the default platform.”
Zero History, William Gibson