Only works first and the last LED in night rider circuit.

Discussion in 'The Projects Forum' started by Hasith Lakshan, Feb 11, 2016.

  1. Hasith Lakshan

    Thread Starter New Member

    Feb 11, 2016
    2
    0
  2. Hasith Lakshan

    Thread Starter New Member

    Feb 11, 2016
    2
    0
    And also I could not found 8.2 k resistor i used 2 * 4.1 k resistors. And also i did not found any 6.8 uf capacitors i used 4.7 uf. Does it matter???
     
  3. bertus

    Administrator

    Apr 5, 2008
    15,649
    2,348
    Hello,

    The capacitor above the 4017 is a 6.8 nF.
    You are talking about a 6.8 μF.
    This is a factor 1000 X difference.

    Bertus
     
  4. Dodgydave

    AAC Fanatic!

    Jun 22, 2012
    5,003
    745
    Its possible the diodes are the wrong way round, have you got a dvm.
     
    Marcus2012 likes this.
  5. Marcus2012

    Member

    Feb 22, 2015
    349
    26
    I would assume diodes first too, especially if the time difference between the first and last activating corresponds to the missing light ups. Why the cap on the reset point btw? Is it a supposed to be a decoupling cap? I assumed the reset pin and clock inhibit were was always held low together through a pull down resistor for sequential function.
     
Loading...