velocity measurement for car on a race track

Discussion in 'The Projects Forum' started by sweet1106, Feb 26, 2009.

  1. sweet1106

    Thread Starter New Member

    Feb 26, 2009

    i was working on this project where i had to measure velocity of a car on the race track everytime it passes the start finish line.
    i was planning to use lm 555 timers and a divider and an LED to display velocity in 3 digits.

    but i was not sure how i will input distance? and how i could divide distance/time?

    can anyone come up with ideas? i cannot use microcontrollers in my project. i just have to use simple stuff such as flip flops, counters, etc.

    i would really appreciate it if anyone can help me out with this please!