Experiencing the Install

Got the truck outfitted:

click for more

Still need to find a level place to stand in order to see if it really works.

More Anon.

Turbulent Hans Haacke

Last Saturday I went to the New York New Museum's Ghosts in the Machine show and found that Hans Haacke has already done it all. In 1965. On show were two of his pieces using wind blowers to move objects around in much more mesmerizing ways than my packing pellets.

http://mlkshk.com/r/4WH6

The first, Blue Sail is a big, well not to put too fine a point on it, blue sail of light fabric tethered and weighted at the corners. A household variety oscillating fan underneath makes it billow and flow in apparently random ways. The second, Kugel in Schragen Luftstrahl, is a small helium weather balloon bobbing around in the mid-air Bernoulli effect of a hairdryer blower. When the guard wasn't looking I waved my hand over the blower outlet and got it to bobble even more. Way nicer, and quieter, than the volley-ball-in-traffic-cone version we had at the Explo, which, while doing all this putzing around, I didn't think of either.

Fortunately no one knows about Haacke and his hot air, aside from the hundreds of tourists that go to NYC Museums, so I may be safe.

http://www.artnet.com/Magazine/features/cone/Images/cone8-6-11.jpg

Right next to Haacke's balloon was a piece by Gunther Uecker called New York Dancer IV -- also from bloody 1965. A human sized shroud of canvas pierced through all over with various sizes of iron nails. It just hung around until 4pm when I was lucky enough to stumble into the room in time for it's daily demo. A stunningly gorgeous young woman came darting into the space, uncovered a red switch-box in the corner, meticulously donned cotton curatorial gloves, and with a fairly bored expression pushed the button to make the thing slowly spin. As it got up to speed the fabric billowed out and the nails flailed around in pleasant wavy ways. Then some bit would get bound up in the mechanism causing the whole thing to slam crashing around, at which point our Muse let off the gas for a bit to slow it down. And...Repeat.

<sorry...no photo>

Grasping for a conversational gambit afterwards, I asked her if it had been the artist's intention to have those transitions from simple waving to complex crashing. She said he had actually demonstrated it being operated as such, although she described it as, "Really stomping on the switch..." So it's not entirely clear if complex behavioral transitions were a consciously desired result or just serendipity.

The rest of the show was a mixed bag of mechanical objects and mechanical drawings, all owing their raison to Duchamp's Bachelors -- if one is to believe the curatorial introduction in the catalog. Much of it was fascinating historically and some was still engaging. However, while there was a bit of work from the post-1970's, it stopped short of the Software show debacle and Burnham's subsequent Panacea that Failed analysis of the whole ArtTech scene. This may, by its absence, provide another leg for my hypothesis -- that all we got out of the era was MTV -- to stand upon.

Anyway....I get the Axle truck in about an hour to start the actual installation...

Turbulent Software

The control system and software work about as well as they are going to. I get the truck on Sept 12 to see just how good that is:

System Block Diagram

 We hope to go live before the Sept 16 After Dark party in Santa Fe's Railyard. I will also have two "studies" in the ISEA Residencies show at the UNM Architecture Gallery. The opening is Sept 22 (I think). Schedule to follow.

Local Color XII -- activities for yoots

A somewhat unfortunate juxtaposition of links in the Nerd Mexican online edition today:

santafenewmexican.com

The council was also busy waffling on fluoride-water and pedestrian under-over-passes after having definitively not spent all the economic development money they previously allocated because they couldn't decide what to do...

Local Color XI -- fire in the hole

Case # 0212011152 -- Vehicle Fire

On today's date, Thursday July 19, 2012 at 3:50 am Santa Fe County Sheriff's Deputies responded to a call of a vehicle fire. Upon Deputies arrival, a green in color 1997 Jeep Cherokee was found to be completely burned. Witnesses at the scene advise the driver of the vehicle wanted to show others that he could drive the vehicle through a bonfire at which time the vehicle caught fire. The driver of the vehicle was not located at the scene and this case is currently under investigation.

Under Control

My Turbulent Electronics Seem to Work!

Because my "studio" is a bit cramped -- i.e., cluttered with tools and detritus -- I've had to fly the fan box in the rafters and try to find a clear-enough area to put the sensors to test them:

fans at the top, sensors at bottom (see arrows if you can)

Here's the control board (the driver transistors are underneath the silvery heat sink which actually seems to work, and the little black rectangle just to their right is the PIC microcontroller):

Controller

On the left are the fan connections, each with an individual fuse and indicator LED. On the right are the sensor connections -- see more below. At bottom right is my failed attempt at a remote ON/OFF cutout relay. It works fine, however any bouncing around -- say driving over a bump -- makes it bounce around-ON, so I think I'm going to have to replace it with a regular switch. Which means we'll have to crawl under the ramp in the truck to turn the thing on and off. But only for a couple weeks...

I tested the sensors and each one seems to be correct. On top is a "PIR" motion detector which should see people milling around 30 feet out. Below are three IR distance sensors (Sharp GP2Y0A00K0F) which are supposed to work to 5 meters (15 feet), but will be reliable within 10 feet at least, so if anyone has the temerity to actually aproach the truck, we'll know about it:

Sensor Block

The fact that the PIR sensor works is amazing considering how much trouble it is to get a "Motion Detector" to work the way I want... The problem being that all of the easily battery powered Passive InfraRed (PIR) sensors that I had upon my hands didn't work very well in the sunny-windy outdoors (I'm looking at _you_ Parallax). This led me to futzing with various Porch Light Motion Sensors, where some did a reasonable job of not false-triggering outside [...remember your (or at least my) damn proch lights going on and off all night when it's windy? That's the problem, along with the bright lights of Santa Fe in general...]. Some of the porch sensors could be hacked to run on 24v DC -- which meant more power supply complications -- and some can't (easily). Then, the one I though I got to work croaked on me as soon as I assembled it with all the other bits'n'pieces. So it was off to the hardware store again (speaking of which, if you haven't read Neil Stephenson's description of Hardware Store Foraging, it's a must at this point.)

I swallowed my pride and bought a Heath/Zenith "Wireless Command" module (#SL-6030-BZ-A) for $28 smackaroos which runs on two AA batteries (power problem solved!), but only communicates by radio. After testing it outdoors and finding it to be very reliable I opened it up to find that I could connect across the built-in LED indicator and get a good 0-3v signal out. So with a bit of drilling and grinding it's mounted up top there.

Which leaves us with Power. I got a 100AH Sun Extender 12v battery for your basic off-grid use and added a 55A PowerMax three stage charger to top it up:

Power Central

I ran this whole kabodle for 5 hours yesterday at about 40% of peak load -- each fan sucks about  2.5A, so all eight use 20A -- by sequencing fans on and off in a multi-pattern. The transistors did not overheat and the battery did not die. In fact it didn't even make it to half-charge, so I think there'll be enough juice to go around.

Webstory

Here's a cute little article about the first photograph ever posted on the WWW:

Crossdressing, Compression and Colliders

Yup, that's CERN's own Les Horribles girl band from 1992. There's also a photo of them performing at a Nobel Prize celebration party that year and other ephemera. Unfortunately, none of the original band members were actual scientists, but they played them on TV.

This picture put the GIF mechanics in place that now enables us to see, not only Goatse, but everyone's best/worst/most-boring day at work. 24/7:

Forklift Fail