Small electronics project: blinking LEDs 01

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Uploaded by on Nov 28, 2007

4 leds, light up one after another, from left to right, one at a time.
Components used: external power supply connected to 5V voltage regulator IC "7805", "555" timer IC, stadart logic IC's -- "74253" (8 D-type flip-flops), "7408" (AND gate) and "7404" (NOT gate), 5 leds (one is connected directly to the timers output, to make the clock signal visible), a few resistors and capacitors.

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Science & Technology

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Standard YouTube License

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  • sounds crazy, but the music sounds good. whats it called?

  • It's one of the tracks from Unreal Tournament (the 1999 videogame) soundtrack.

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All Comments (16)

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  • is there anything even connected to the component that looks like a voltage regulator connected to heat sink?

    

  • show us how to make that bad boy

  • SEARCH MINE JOB -> 1EPAL H/K tzo

  • he uses a voltage regulator IC for his 5volts supply for the other IC....

    a 555timer IC for generating a clock pulse....

    with 2 potentiometer to control clock pulse....

    and 3 or 4 other ic a J-K flipflop maybe...

    we created that project before when i was in college. and really love logic circuits...

  • can u say about the matrials required and d circuit

  • dull

  • The two "controllers" are Potentiometers. They are variable resistors whose resistance can be changed. That's why he's moving em' around; to make the LEDs light up fast and slow.

  • and what are those controllers the greens ou touchoing what are they call. listen i have some chips that are res network i dont know how to use them do they make the leds go slow and fast? but still icant understand why you put those chips explain me with steps and diagrams if you can

  • on the "chips" are miniature electronic circuits that don't take up too much space and power, these chips or circuits can also store data information of 1's and 0's that represent text, images, sounds, etc

  • what are those microchips do i always want it to know but know one ever knew. what are they for?

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