newbie needs help

Discussion in 'The Projects Forum' started by gasket, Nov 25, 2012.

  1. gasket

    Thread Starter New Member

    Nov 25, 2012
    7
    0
    hi guys i have a very limted knowledge base with this sort of thing id like to make a rev counter for my bike the wiring diagram i have i have had to change as id like to have all the led flash when led 10 is lit like a shift chage light please can someone look over the whole circuit to see if ive made a boo boo any where thanx guys[​IMG]
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,969
    744
    ok have you tried to input a low voltage dc signal (0 to 2v) into pin 5 of the LM3914 on its own to see if your leds ramp up and then flash on the last one?

    Also what voltage are you getting from pin 5 of the LM2917, when you input a pulsed signal into pin 1 ?
     
  3. gasket

    Thread Starter New Member

    Nov 25, 2012
    7
    0
    thanx for your reply i haven't wired anything up as yet all parts on the way i just wanted someone to look over the diagram to see if theres anything ive done wrong that sticks out before i start the build but the things you have sugested will be very handy to test
     
  4. gasket

    Thread Starter New Member

    Nov 25, 2012
    7
    0
    bump >bump
     
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