Port or serial adapter on the computer and connect the other end of the cable to the control port on the Kaleidescape player. Control messages. PhotoEchoes Computer Kaleidoscope. An Animated Digital Kaleidoscope from your Collection of Photographs. Will use them to Create Mind.
Although computers got their name from their ability to calculate, one of the main uses for computers today is in communications. Our modern telephone system is a large collection of computers, communicating with one another by sending pulses of laser light through optical fibers.
Click on photo for a larger picture We can do the same thing at home. In this project, we will build a laser transmitter that the computer will control, sending data by flashing the laser on and off. But we will eliminate the optical fibers, and just send the light through the air, in what is called free space laser data transmission. Snow Patrol Eyes Open 320 Rar. The computer controlled laser data transmitter needs these parts: • A pocket laser pointer We carry this item in our.
• A serial port connector We use a 9 pin RS232 connector. You can take apart an old serial cable, or buy a new connector from an electronics or computer store.
We carry this item in our. • An NPN transistor Almost any type will do, such as the 2N4401 or 2N2222A.
We carry this item in our. • A 470 ohm resistor This resistor will have color codes Yellow Purple Brown and Gold. We carry this item in our. • A light emitting diode We use a clear lensed red LED, but most any LED will do. We carry this item in our.
• A generic printed circuit board This is not really required, but makes assembly easier. We use the Radio Shack 276-159B. We carry this item in our.
• An alligator test lead This is a piece of wire with alligator clips at each end. We used half of a red one and half of a black one, to make it easy to describe how to connect them, but a single test lead cut in half will do nicely. It does not harm the laser to connect them wrong -- just switch them around if the laser doesn't light up. We carry this item in our. • A nine volt battery clip This is a clip on connector for a 9 volt battery. We carry this item in our.
Ghost 11 5 Exe Dos Sites. • A spring-type clothes pin • A screw or nail about 2 inches long with a flat head • A small block of wood for a base • A nine volt battery • A bit of tape and glue to hold it all together Modifications to the laser We will not actually modify the laser, so it will be easy to undo the project and still have a working laser pointer. But we will be removing the batteries, taping down the ON switch, and inserting a small screw where the batteries were, to make it easy to connect the laser to the transmitter circuit we will build. Click on photo for a larger picture With the batteries removed, we can look into the back end of the laser and see the small spring that normally connects to the negative terminal of the battery.