Tuesday, April 25, 2006

How to build an LED Display Robot Part #1



Materials Needed:

- Wires
- LED's
- PC Board
- Shift Registers (model #74VHC595N)
- Soldering Wire
- Solder Iron
- Wire Cutters

Step 1: Prepare a HUGE stash of wires (approx. 1' each).



Step 2: Solder!

a. Insert LED on one side of the PC Board.
b. Solder a piece of wire on the other side.
c. Repeat over and over. Don't burn yourself!




Step 3: Connect to board using Shift Registers





Tuesday, April 18, 2006

Robot Progress



What is a Robot?

A robot is a mechanical device that can perform preprogrammed physical tasks. A robot may act under the direct control of a human (eg. the robotic arm of the space shuttle) or autonomously under the control of a pre-programmed computer.
-Extracted from Wikipedia





Mindmap 1:



This mindmap shows a connection between the physical components and the more abstracts such as purpose, how, why. etc.

Mindmap 2:



This is a more updated mindmap, showing more in general all the aspects that really interest me for this project.
- Programming
- Robotics
- Film (Movies)
- Building Things
- Toys

Joystick/Controller:



Servos (Hands and Legs):




LED display (Face):



Prototype a:



Prototype b:





Things to do:

- Research Robot concept, terminology, definition.
- Adjust the project to this Robot definition.
- Conceptualize and do mindmaps on more specific concepts.

Sunday, April 09, 2006

Finally... Progress!



After spending many days in the DT lab trying to figure out how to work Shift Registers and ADC chips, I finally managed to understand how they work.

First, I connected a round flex cable to the ADC in order to convert the analog signal to a digital one, so that the BS2 could understand it. Once I managed to do this successfully, I connected the shift register into the BS2. I programmed the BS2 so that depending on where the flex cable is pressed (from 0 to 255), 4 different LEDs would light up.



All I need to do now is replace the flex cable with a joystick, figure out how to make it work, make a bigger LED array, control the flow of lighting LEDs with the joystick, and do some cool design.

sigh.