Physical Computing

Whee

2008-04-08T12:55:00.000-07:00

Problem solved. After much testing we thought something strange was happening with the pins. But when I looked at the code it was setting the same pin twice in each test case. Whoops

Project Runway

2008-04-07T21:39:00.000-07:00

For my project I am using a decoder 74ls139 I have it hooked up as follows
(I am going to link the images since they are super huge right now)
Decoder Arduinothe outputs can be connected to an led.

This is the truth table I got back, if you refer to the PDF the truth tables do not match (as indicated by the * ) Truth table
If anyone knows what's wrong, help!

Demo Video

2008-03-20T17:20:00.000-07:00

This is what im get for playing with my camera

Pictures of the Chip Housing Unit

2008-03-20T16:00:00.000-07:00

This is the front of my CHU, (now the full name isn't very creative, but the acryonymn is hilarious) Illustrating the holes for the ports

In this top view you can see the six peices of sticky tack used for fastening the board to the CHU and the CHU to a breadboard, the sticky tack can be moved to the other side to mount on the other side of the board.

A view of the back

A full view with out the chip

A full view with the chip

Chip safe and sound in the CHU attached to the board.

Pictures inc!

2008-03-20T12:54:00.000-07:00

Pictures are incomming, my camera arrived, which means I have to leave early to go get it.

Now that I am miles more coherent

2008-03-20T10:27:00.000-07:00

The code is here Blink Code
A diagram is here Future Diagram Link
Pictures
Here is my Blink in all its blinky glory. This image was taken at the (current) ambient light

The wired Ardunio

The Switch and the LDR

LED Bar at Ambient Light

Low Light

Full Light

No Light

Blink

2008-03-19T22:20:00.000-07:00

Well it's 1:30 am. But I am finally finished. Pictures will follow. And Diagrams when I get to a scanner. I will bring it to class on friday.
Here's what it does:
1: the push switch turns the whole thing on or off.
2: The LDR determines the level of light and the led's light up according to where the light range falls.
will link the code at work tommorow.

Chip housing unit...

2008-03-17T20:11:00.000-07:00

I got tired of my chip floating around not really attached to anything so I made it a housing unit. I don't have any pictures as yet as I am waiting on the arival of a camera. But to make it I used cardboard, duct tape, sticky tack, scissors (for better accuracy something better than the kitchen shears that I used), and a pen.

Place the Ardunio chip on a peice of card board and trace with a pen.
Cut on the outline.
Measure the chip length wise, marking where to cut for the sides.
Repeat for front and back panels. be sure to mark port openings on the front panel
Cut out all the peices
Now use the sticky tack to affix the chip to the bottom peice
Attach the sides with duct tape, (I used clear, but any color will do)
Now I cut a rectangular section and attached it to the bottom with peices sticking out of the sides of the enclosure so that I could use sticky tack to affix it to my bredboard on either side (or the top or bottom) to allow for versatility. also the spare hanging edge is working well as a USB cable holder. You could also make the bottom peice larger to start with, but I didn't think of this until after I was done.

Soon I will take pictures of it and post them.

Silly me...

2008-03-17T14:18:00.000-07:00

So I am sitting at work with little to do so I decided to start on my project. First I wired the board to the bredboard and correctly connected a LED, though for some reason the bb was not getting power, so I took everything apart to trouble shoot it and start over. It took me 20 minutes to figure out I was using the multimeter wrong. Don't laugh too hard please, it has been awhile since I have used one. Still no excuse.

Now my laptop seems to not want to upload to the Arduino board...I know it did it atleast once then decided it didn't want to. I have the correct drivers installed and the correct COM port. Sometimes my laptop is a little screwy....Probally time for a reformat.

Well...

2008-03-15T21:31:00.000-07:00

It's 12:30 in the morning or so, as I was just informed. my blog for 4002-590-01, Physical Computing, is assembled.

Not much else to add. I will begin working on the Blink project tomorrow, or rather later today. Still not exactly sure what I want to do with it.