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Incorporating A Laser Transciever Into the BOE-BOT. — Parallax Forums

Incorporating A Laser Transciever Into the BOE-BOT.

EzsynnEzsynn Posts: 119
edited 2009-02-22 01:52 in General Discussion
I have Drawn a Schematic for a Transmitter and Reciever.
How would you connect it to a Board of Education?
So it would use the BOE's Power Source Instead of it's own individual Battery Pack?
I came up with the Idea on Youtube.



Pretty Neat, eh?

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BWIN ON DA POWAH WIFIN U!!!

Comments

  • Mike GreenMike Green Posts: 23,101
    edited 2009-02-21 23:48
    You'll probably destroy the laser diode. You'll need a higher voltage than the 4.5V you've shown and, without a current limiter, the diode will blow. Here's one person's current regulator: lasers.wikia.com/wiki/How_to_construct_a_regulated_driver_for_a_laser_diode. You won't be able to modulate the output of this because the regulator will undo any attempts at modulation. You'll have to actually modulate the current regulator's output. It sounds like you'll have to do some research on modulating semiconductor laser output.

    You could use a solar cell as a detector, but it's really not designed for that task. In particular, solar cells are designed for a broad response to light at several frequencies at least ... to extract as much energy as possible from the sunlight. Semiconductor lasers produce light in a very narrow band of frequencies. The most common ones produce infrared or red light and some more recent ones produce blue light. It's best to use a matching detector.

    I strongly suggest not experimenting with lasers. They're potentially extremely dangerous and can cause permanent blindness in seconds and even fractions of a second. If a laser is on and comes loose, the beam can reflect off surfaces in the room and still cause permanent eye damage. Do your experimentation with a high output red LED. The problems are similar, the results can be similar, and it's much safer. I've seen (and used) a commercial infrared LED based wireless network transceiver with a range of about a mile, so you can do serious work with just LEDs.
  • EzsynnEzsynn Posts: 119
    edited 2009-02-22 01:52
    http://images2.wikia.nocookie.net/lasers/images/1/1a/Lm317diagram.jpg

    Pretty neat actually, so How do we add this to the Transmitter Mike?
    Oh yeah, trust me red Lasers are way safer than blue lasers.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    BWIN ON DA POWAH WIFIN U!!!
    (This means the Plutonium Isotope Nuclear Fission And Fusion Reactor Battery Pack you've been hiding inside your jacket!!!)
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