555 timer ciruit errors

Discussion in 'General Electronics' started by yumi, Nov 28, 2016.

  1. yumi

    yumi New Member

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    I have set up a 555 Timer circuit on my breadboard following this diagram.
    [​IMG]
    These are the values I use:

    R1: 1k

    R2: 1k

    C: 0.1uf

    Vcc: 9V

    The only problem is, on pin 5, I have a 0.001uf capacitor. When I connect the circuit, the led I have on pin 3 (normally I have an 8 ohm speaker but I wanted to see if any current was being produced) doesn't light up. Here is a picture of my breadboard. (Sorry for the horrible wiring... And the extremely large image)
    [​IMG]
    The bigger capacitor is 0.1uf and the smaller is 0.001uf. Also, wire colors don't mean a thing (again... sorry).

    Thanks in advance for your help.
  2. Manoj

    Manoj New Member

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    I found a time circuit same as yours but some modifications in capacitor valuses.

    You may check at Seven Segment Based Timer.