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How would you...............

Discussion in 'Beginner Electronics' started by PinkFloyd43, May 12, 2008.

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  1. PinkFloyd43

    PinkFloyd43 Guest

    Create a circuit with bright red LEDs that would attached
    to the front and back of a motorcycle helmet that would
    flash for x period of time when the operator moved their
    head left to right, like saying NO, NO to a car about
    ready to pull out in front on you....


    Thanks!
     
  2. RFI-EMI-GUY

    RFI-EMI-GUY Guest

    Use a small electric motor and flywheel mounted parallel to the ground.
    Sharp movement left or right will create a small DC voltage to be
    rectified (full wave) and used as your trigger. You will have to adjust
    sensitivity to ignore turns.


    --
    Joe Leikhim K4SAT
    "The RFI-EMI-GUY"©

    "Treason doth never prosper: what's the reason?
    For if it prosper, none dare call it treason."

    "Follow The Money" ;-P
     
  3. qrk

    qrk Guest

    Analog Devices motion sensors connected to an RPG. Easier to connect a
    switch on your handlebars to the RPG launcher. If you aren't protected
    against shrapnel, perhaps a photoflash unit to blind them into
    submission.
     
  4. ian field

    ian field Guest

    Those electric powered "gatling guns" do perfectly adequate damage to a car
    without the blowback of shrapnel that a HE missile produces.
     
  5. RFI-EMI-GUY

    RFI-EMI-GUY Guest

    And they look real cool spinning around even when they run out of ammo!

    --
    Joe Leikhim K4SAT
    "The RFI-EMI-GUY"©

    "Treason doth never prosper: what's the reason?
    For if it prosper, none dare call it treason."

    "Follow The Money" ;-P
     
  6. default

    default Guest

    I'd like a C02 IR laser to wipe out the nose picker's tires.
     
  7. default

    default Guest

    If you have a good low beam halogen headlamp - by good I mean no or
    low glare - it is virtually invisible during daylight. The damn
    things are like movie projectors - well collimated beam with no
    overshoot. I put a little 10 watt halogen about 2" below the main
    beam and it is more visible because it isn't collimated.

    I also 48 white 1300 mcd leds in a rectangular pattern below my
    headlight - the drivers seem to pause longer trying to figure out what
    it is and that seems to be keeping them from scaring me.

    It is also a useful light for driving at night - the 10 degree beam
    spread isn't annoying the oncoming traffic and makes a big difference
    lighting the road 10-20 feet in front of the bike.

    A trigger able xenon flash inside the headlight would probably work
    too.

    Headlight modulators are OK but not really noticeable enough in my
    opinion.
     
  8. w_tom

    w_tom Guest

    Red is a wrong choice - a color harder to detect. Automobiles
    designed by engineers (not by fashion designers) use orange (amber)
    rear turn signals. Orange cuts through fog, smoke, rain, etc; and is
    easier to see at dawn and dusk.

    Sources of motion sensors include those $1 electronic pedometers or
    game handles from Wii video games.
     
  9. PinkFloyd43

    PinkFloyd43 Guest

    Sorry, have quite a bit of backing, read $$$, for this project and
    was hoping to have some answers that would not be high
    school quality, well I will keep looking for a electronics guy that
    can do a project like this.
     
  10. ian field

    ian field Guest

    Gimmicks like this have a nasty habit of becoming compulsory adding to the
    riders costs.

    The better solution has always been rider education - to look where they're
    going because car drivers can't be arsed!
     
  11. Rich Grise

    Rich Grise Guest

    Well, you asked, "How would you..."

    What I'd do is put a steady red LED on the back, and a steady
    amber or yellow LED on the front, and just shake my head when
    I wanted to draw attention - the movement will attract the eye
    of the viewer.

    But there's a caveat - if you're thinking of using it like a
    turn signel, it will be backwards - i.e., when you're looking
    to the right, the LED will be on the left, viewed from the back.

    So maybe it's not that great an idea after all. Sigh. I've been
    thinking about how to mount some LEDs on my bicycle, but I
    wouldn't want them to blink or flash - that's too much like
    "emergency". =:-O

    Have Fun!
    Rich
     
  12. Rich Grise

    Rich Grise Guest

    But I've found that the recoil really slows me down.[/QUOTE]

    You just need to put it on a truck:


    But it would be interesting to know how many pounds of thrust it develops.

    Anybody remember "Terminator II" or "Predator"? They had guys holding
    those things in their hands. I find that exceedingly implausible, even
    for Ah-nold. ;-)

    Cheers!
    Rich

    It's fascinating what shows up in the "Other selections" part:
     
  13. w_tom

    w_tom Guest

    First, those are not hardware diagnostics. Those are Windows
    diagnostics. It is an HP. That means the computer manufacturer was
    more responsible - provided a comprehensive hardware diagnostics that
    give numbers and detailed messages. If you don't post those numbers
    and messages, then the few who can actually answer you question will
    not post.

    Only one disk drive computer controlled both drives. If either
    drive is defective, then the one computer will report a failure. Is
    the defect in drive two but you keep replacing drive one (because
    drive one controls drive two)?

    Second reason for failure are completely and always defective power
    supply voltages. Completely defective power supply will boot a
    computer. Then strange things happen once every month. Does that
    sound like your computer? Sound means nothing. Again, you need
    numbers. Voltage measurements are the only way to identify that
    reason for a failure.

    Heat is not a problem. Your computer must be in love when the room
    is 100 degrees F. A computer that is failing in a 70 degree room does
    not have a heat problem. It has a hardware problem. How to find a
    completely defective machine? Operate it even in a 100 degree room.
    If it fails, a hardware problem probably exists - another reason why
    more responsible computer manufacturers provide comprehensive hardware
    diagnostics.

    Now, step back. Is your problem with hardware or software? Windows
    does little to find hardware failures. Windows works around hardware
    failures - does everything it can to ignore those problems. However
    Windows also has system (event) logs so that months after a problem
    occurs, then a hardware guy can identify the problem. What (exactly
    letter by letter) does each failure message in those logs say?
     
  14. JosephKK

    JosephKK Guest

    Both are kind of HEAVY for riding around.
     
  15. JosephKK

    JosephKK Guest

    Agreed. And i have been riding daily for about 30 years.
     
  16. PinkFloyd43 formulated on Monday :
    Thanks!
     
  17. ian field

    ian field Guest

    One of the Arab states that had a war with Israel had nifty little Russian
    supplied anti-tank missile that was carried by infantry in a rucksack.
     
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