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Simple drag strip timing?


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#1 slotcarscrapyard

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Posted 02 December 2010 - 12:51 PM

What the easiest and most simple way of making a drag strip timing system?

Basically need a start light for go and something to indicate which lane won, can be as simple as a light or time display.

Is there anything ready to use?
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#2 Dave Sykes

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Posted 02 December 2010 - 01:13 PM

Yes please as I would be interested in circuitry for a hill climb circuit

#3 PCSlot

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Posted 02 December 2010 - 03:49 PM

If you do not want to spend much money and have a pc or laptop handy and an Asda 3 Smart Price mouse (price has gone down) then you would only need to add a couple of deadstrip sensors on the finish line connected to the mouse, a start light can be represented on the screen with sound if you want, the times can be logged.
If you wish I will write a program for it

Cheers

Richard

#4 Steve D

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Posted 15 December 2010 - 08:21 AM

Hi SSY, there is this:

http://www.trackmate...opexd.asp?id=41

Or Pendle do a DS200 which can be used for drag racing.

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#5 trenchtownbilly

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Posted 15 December 2010 - 07:57 PM

QUOTE (PCSlot @ 2 Dec 2010, 15:49) <{POST_SNAPBACK}>
If you do not want to spend much money and have a pc or laptop handy and an Asda 3 Smart Price mouse (price has gone down) then you would only need to add a couple of deadstrip sensors on the finish line connected to the mouse, a start light can be represented on the screen with sound if you want, the times can be logged.
If you wish I will write a program for it

Cheers

Richard


Hi Richard. It would be good if you could write a program for the mouse to be used for drag timing. I for one would use it.

Dave H.

#6 Slingshotx

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Posted 15 December 2010 - 11:24 PM

QUOTE (PCSlot @ 2 Dec 2010, 15:49) <{POST_SNAPBACK}>
If you do not want to spend much money and have a pc or laptop handy and an Asda 3 Smart Price mouse (price has gone down) then you would only need to add a couple of deadstrip sensors on the finish line connected to the mouse, a start light can be represented on the screen with sound if you want, the times can be logged.
If you wish I will write a program for it

Cheers

Richard


Hi Richard wouldn't you need 4 sensors, 2 start sensors (make sure no one jumps the start) and 2 finish sensors?

Maybe it's time to dust off the Velleman USB board?

Kevin
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#7 PCSlot

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Posted 16 December 2010 - 11:11 AM

QUOTE (Slingshotx @ 15 Dec 2010, 23:24) <{POST_SNAPBACK}>
Hi Richard wouldn't you need 4 sensors, 2 start sensors (make sure no one jumps the start) and 2 finish sensors?

Maybe it's time to dust off the Velleman USB board?

Kevin


Hi Kevin, Dave,

Kevin I see what you mean about a jump start and the Velleman board could easily be made to keep the power off till the lights went out so thats one way to go smile.gif But of course that would not make it a cheap system unlike just using the mouse on the finish line.

I suppose a "judge" could decide if a jump start happened and void the run? It would save a few bucks

Dave, Kevin let me know what you think

Cheers!

Richard




#8 Slingshotx

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Posted 16 December 2010 - 11:52 AM

I've only had a couple of goes at drag, but in my experience it's all about reaction times so having start sensors (obviously dead strip wouldn't work!) is pretty important, so is a live start.

I mentioned the Velleman since it would support 4 sensors easily. The one strip I had a go on had staging sensors too, to ensure the car was in the correct place, again these would need to be optical.

I guess it depends how serious people want to take it? Using the mouse would be ideal for a simple rug racing type scenario.

Kevin
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#9 PCSlot

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Posted 16 December 2010 - 04:10 PM

Hi Kevin,
I have had a think and reckon that if we had 4 opto sensors (2 at start, 2 at Finish) they could go to the same inputs (wired in parallel) (Mouse Left Click, Scroll Down Click) then I could monitor the start sensors with software when lights go out to see if a car took of early and monitor the finish line sensors for winner.
There might be an impedance problem with 2 sensors wired to the same input but I very much doubt it, I will experiment and see what happens smile.gif

I could also do a drag tree whatever that is and I would need to be told biggrin.gif if of any use

Edit here.... The Drag Tree of course would be on screen and not hardware

Cheers!

Richard

#10 Slingshotx

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Posted 16 December 2010 - 05:45 PM

Good idea, sounds good, maybe off to the loft to get a load of straight track sections down!

I'll have a look at your other thread for opto sensors, I'd like to do without a light bridge though.
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#11 Jaak

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Posted 16 December 2010 - 06:02 PM

Hey,

This sounds interesting and I would also be interested in it.
sinds not to long I hvae a laptop with windows 7 and I asume that should be able to run the software.
I was wondering if a similar system can be used as timing sytem on a 2 lane track?

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#12 Slingshotx

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Posted 16 December 2010 - 06:20 PM

Richard's PCSlotMouse system already works for a 2 lane track see

http://www.slotforum...showtopic=44770


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#13 PCSlot

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Posted 16 December 2010 - 06:50 PM

Hi Jaak,

The PCSlotMouse software runs on Win 7 providing it is 32 bit OS , not tried 64 bit OS but it "may" work?

Cheers!
Richard

#14 Jaak

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Posted 16 December 2010 - 10:53 PM

Hello Richard,

I had look at the program and downloaded it but then realized I need to make the hardware,
and looking at the electrical schematic drawing I unfortunately have to conclude its out of my league huh.gif

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#15 PCSlot

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Posted 17 December 2010 - 02:51 PM

Hello Jaak,
I was hoping to get someone to make and sell the PCSlotMouse opto interface as it would still be very cheap, no takers thus far I,m afraid.
Did you look at the dead strip sensors? That should be quite easy to do and cost is very small

Cheers!

Richard




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