Sunday, March 05, 2006

Command Line for Windows

http://www.commandline.co.uk/cmdow/

Thursday, December 29, 2005

print on transparency

Print 30 layers deep on transparency sheets. Each transparency sheet is one layer of the scene. Each layer from top to bottom is less opaque. That means the topmost layer has its opacity set at 10% or so. Each layer goes up a certain percentage depending on how many layers you are printing.

Monday, December 26, 2005

to sum all of my talents into one thing unique - life goal

to sum all of my talents into one thing unique - life goal

cherub dragonflies hanging from trees

the winter sun projects crisp shadows that draws the visions from within. cherub dragonflies are seen dancing through the naked veins of the bare cherry tree.

shadows under the clouds flow through the silloute of the popular.

Saturday, November 19, 2005

Problems and issues Nov 18 2005

I'm only getting 25 - 35 feet of USB distance when running both the activeWire board and the camera at the same time off the same powered hub. I'm taking power to the hub from a regulated 5V 7805 chip that is connected tothe main 12V light. Inherityly there sounds like I don't have the power supply buffered and separated enough. I don't have capacitors or anything to help clean up the signal though.

The distance is not enough and is not acceptable. My goal was for 60' and now I know that the only way to get 60' or more is to go network with the labjack.com device. I get more pins, more analog, and much more distance.

That means I need to redesign the sub if I'm going to have the capacity to go 500'.

I want network to labjack or computer to computer and USB.

Problem using computer to labjack is need network camera. Solution, switch to security camera via traditional transport to VGA card on computer.

Problem using computer to computer to usb is that it requires two computers and a client server application.

Prefer computer to network labjack.

OR.....

Computer to USB only. Use separate security camera line.

How far can using activeWire only go? Remove USB camera altoghter.

ActiveWire board only distance was discovered to be:

Friday, November 04, 2005

Marble Organizer Art Installation

Multi colored marble collection is dumped into pan a size such that the all the marbles when evenly stacked they take up the size of the pan.

Think large scale LightBrights. The marbles are dumped and shown to the viewer then a machine arm one by one or multiple create an image by picking up a marble out the mess of marbles and placing it into the right space on the final image.

Design each joint in the arm mechanism as relient entity unto itself of accomplishing a goal (which happens to be the goal of the arm)

3D this can be done with the following algorithm

  1. Create n-number of objects
  2. Show the user the objects each individually organized object
  3. Apply gravity to objects to make them drop into a jumbled mess
  4. Have objects collect into a general pool
  5. Pick an object at random
  6. Analyze random object to determine where it best fits in the picture.
    1. Best fit by color is simpliest
    2. Best fit by type
    3. Best fit by size
  7. Choose another random object until no more objects exist

Wednesday, August 17, 2005

8" diameter sphere should be more than enough

A cubic foot of air has volume of 1728 cubic inches.
A 8” diameter sphere has a volume of 268 cubic inches.

A cubic foot of air displaces ~64 lbs of seawater.

The 8” diameter sphere has about 15% the volume of the cubic foot so it displaces ~9.5 lbs.

When the sub is in the water it only weighs 15% of its outside the water weight. If the sub weighs 50 pounds in the air it only weighs 7.5 lbs in the water, under the 9.5 lbs of seawater displaced, so it will be positively buoyant.

Monday, June 27, 2005

Skids, 4 way float / sink control, Styrene, Powered USB Hub

  • Skids
    • You want skids because you are going to be negatively bouyant by default. By having skids about 1' off the floor you don't have to use energy to stay down
  • 4 way float / sink control
    • There are 4 floats. For, Aft, Left, Right. They are hooked up to a single prop arm on a geared DC motor that rotates left and right which allows the lure to roll and two floats on the arm located far forward / and far aft. By changing the rotation of the propellor (at most 180 degrees) you can control the pitch and roll of the LURE
    • Motor must be geared way down so the bouys are forced into their positions.
  • Styrene
    • Styrene tubing is supposed to be great for hooking up drive trains.
  • Powered USB Hub
    • If USB signal strength has a problem turn on the used a +5v powered hub instead of a passive USB2 hub at the end of the tether.
  • Centrally located stabilizing weight
    • One weight at the very center of the LURE can be further lowered down to create a the most negatively bouyant resting point for the LURE.
    • Reel out the weight and it allows the LURE to hover at a much height height then its skids?
    • Maybe skids are needed if this allows you to sit off the shore a certain length? I don't think I need skids, but the centrally located weight acts as a variable height skid.

USB2 and USB1.1 Interoperability

http://www.siliconimaging.com/universal_serial_bus.htm

The new USB 2.0 expansion hub design manages the transition of the data rates between the high speed host and lower speed USB peripherals, while maintaining full bandwidth utilization.


The USB 2.0 specification extends the maximum speed of the connection from 12 Mbps on USB 1.1 up to 480 Mbps (60MBytes/sec). This enables the transfer of 1920x1080 images at 24fps (frames per second) for high-definition video conferencing or 320x240 images at 500fps for high speed video motion analysis. The transition to USB 2.0 will be seamless, since USB 2.0 is both forward and backward compatible with USB 1.1. Older peripherals will simply plug into new USB 2.0 capable PCs and Hubs. The USB connectors and cables are even identical. It is even possible for a high speed USB 2.0 device to plug into a legacy USB1.1 port and simply operate at reduced throughput. Both Hi-Speed USB 2.0 and original USB 1.1 peripherals can operate on a computer at the same time. The new USB 2.0 expansion hub design manages the transition of the data rates between the high speed host and lower speed USB peripherals, while maintaining full bandwidth utilization. Up to 127 USB peripherals with 5 levels of hubs can be connected to a single USB host controller. With 5 Meters (16.4 feet) of cabling between devices, a network of cameras, sensors, data acquisition, and I/O devices can physically extend up to 30 Meters (98 feet) from the PC. A peripheral can either be self-powered or bus-powered, with up to 500mA of consumption. To satisfy the needs of low-power embedded and portable computer applications, a power-management mechanism is also incorporated.

Bulkheads and Pumps

Bulkhead Connectors: http://www.impulse-ent.com/mainproducts.html

Well pumps are intended to be used at the bottom of a
borehole, and are therefore small and designed to work in a high-pressure,
wet environment

Bilge Pumps modified with a propeller attached

http://www.otterbox.com

Links

Good list of underwanter manufactures at end of page.
http://www.photo.net/learn/underwater/uw2/housings.html

The major u/w manufacturers:

me u/w photo shops:

DX3 Kinks to Work Out

  • Shock Absorber
    • The LURE cannot be completed supported by BOB without a movement suppression system. Without a movment suppression system as BOB floats up and down on the surface, it's height would affect by height of the LURE. A shock absorber needs to be in place so that when the communication cable is pulled upward by BOB's motion, the depth of the LURE stays relatively fixed.
    • Bungee Cords?
  • System Check
    • At startup or (at any other time) a system check must be performed to ensure that all equipment is working.
    • Motor movement, winches, cameras, sensors, etc..