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Lap Counter Project

3642 Views 10 Replies 10 Participants Last post by  -Sy-
Hello all,

I am a Slot car racer, and I am building a lap counter for home use for my GCSE electronics project. To help me with researching this project, I would like some info on what the most important aspects are, so if any of you can spare a minute to help, I would appreciate it greatly.
Please number the following aspects 1-12 in order of importance:

1. Ease of portability
2. Ability to count up to set number of race laps and then switch over to count down mode for the race
3. Size/compactness
4. Sound at the end of the race to signal the race is finished
5. To be mains powered
6. To be battery powered
7. Should the counter be a box at the side of the track
8. Should the counter be a bridge type over the track
9. Should the counter be mechanical and then be fixed to the underside of the track
10. Should an Infra Red non-contact sensor be used
11. Should individual lap times be recorded
12. Should the best lap time only be recorded

Please answer and feel free to add any general comments as well.
1 - 2 of 11 Posts
Thanks for help everyone!

Just to clarify, I am making a Lap counter with NO timer (couldn't find constant manufacturer of the chips I wanted). I have designed a circuit (which works!), where the user sets the number of laps, then flicks a switch (rocker) before they start the race. I can't do a start sequence unfortunately without adding loads of components. I have made sure that each lap counted will only count as one lap by using a schmitt trigger to eliminate switch bounce. The design of the case is a bridge over the track with an infra red sender and receiver, which sends a signal which is broken by the car.

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