1. We will be in Read Only mode (no new threads, replies, registration) starting at 9:00 EDT for a number of hours as we migrate the forums to upgraded software.

Lane judge

Discussion in 'The Projects Forum' started by jarrad, Aug 18, 2009.

  1. jarrad

    Thread Starter New Member

    Aug 18, 2009
    I would like to build a lane judge for my local cubs pinewood derby, something like this: http://newdirections.ws/index.htm . It is a three lane track so it needs to show 1st and 2nd, 3rd can just be blank, in the form of either different coloured LEDs or on a 7-segment display.

    I need help with a circuit diagram for this project as my knowledge of electronics is too small at the moment. I can probably work out how to build it from a circuit digram.

    I hope I have explained it well enough, any help would be appreciated.

    PS. The fewer ICs the better, I currently only have a couple of 555 timers and 741 op-amps but can get others if needed.
  2. hgmjr

    Retired Moderator

    Jan 28, 2005
    This website appears to have a fair design in play. You can at least use it as a starting point in furthering this discussion.