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Good 555 timer tutorial.

Discussion in 'Electronic Theory' started by Hero999, Oct 26, 2007.

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  1. MusicTech

    MusicTech New Member

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    I also like ecelab.com/circuit-astable-555.htm when you get better it has formulas for finding the frequency of the square wave
     
  2. HiTech

    HiTech Well-Known Member

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  3. BaCaRdi

    BaCaRdi Member

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    Ditto on that tut;)

    Thought I had deja-vu for a moment. If I started searching on that Can part number again, I would have just walked away.....lol Email alerts can be confusing it seems..haha

    -BaC
     
    Last edited: Sep 23, 2008
  4. dave

    Dave New Member

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  5. slapdash41

    slapdash41 New Member

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    thanks for the tutorials. really useful :D
     
  6. usif

    usif New Member

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    Absolutely, it got me started with Digital electronics (I did a simple counter thingy, working with the 74LS47 and the 74LS90, with the ne555 providing the Astable)
     
  7. coldrush

    coldrush New Member

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    :confused:who needs a round 555 timer????? its 2008
     
  8. coldrush

    coldrush New Member

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    :DNice one Usif, takes me back to my childhood, building binary up/down counters-to-7 segment displays, my mother would show off to her friends with my magical creations
     
  9. blueroomelectronics

    blueroomelectronics Well-Known Member

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    Who needs a 555 now that microcontrollers are cheap.
     
  10. moghli_amateur

    moghli_amateur New Member

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    thanks for sharing the info, i found it useful
     
  11. Hero999

    Hero999 Banned

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    Last time I checked, the cheapest 555 is cheaper than the cheapest micro and can directly drive relays

    If all you want to do is flash an LED, beep a piezo or turn a relay on for ten seconds a 555 is perfect. I wouldn't even consider a micro for something so basic, unless there are other requirements.
     
  12. alhoop

    alhoop Member

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    Someone who doesn't have programming resources.
    Al
     
  13. Hero999

    Hero999 Banned

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    You'd have to be pretty silly to use an MCU if all you want is a 30 second timer relay or a flashing LED.
     
  14. blueroomelectronics

    blueroomelectronics Well-Known Member

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    It's anything beyond that where it gets complex for a simple 555.
     
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