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LED animation

June 20, 2008

It is right to say that I’m obsessed with LEDs. I simply love them; red, green, amber, yellow, now even blue and white!. I remember somewhere around 1985, when I first saw someone building a LED blinker (transistor based astable multi vibrator; for the tech savvy crowd), I was really fascinated. At that time, only red and green LEDs were available in the market, and were pretty expensive for a schooling kid like me. I guess LEDs attracted my attention towards electronics.

Really simple LED circuits

Here’s what attracted me to the world of electronics

  • 2 transistor LED blinker
  • Interfacing 2 separate units
  • The simple 10 LED sequencer with 555 timer IC for speed control
  • Here’s my solution to the expansion - a neat trick using transistor’s gate function
    CD4017 based 100 LED sequencer
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Written by Azmeer · Filed Under LED light and magic 

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