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Discussion Starter · #1 ·
Greetings everyone,
I have been reading the forums here for a while and recently signed up to post.

I built a banked oval track for 1/18th scale BRP cars and wanted a lap counter. I couldn't find anything affordable that didn't use flags on the antennas, so I built my own. During the months of work on it, my wife kept asking why I didn't just buy one. Now that it works, she says I should sell them.

Would there be enough interest in an 8 car lap counting system in the 600-650 dollar range? The current setup covers a 42" wide track using an infrared timing bridge over the track. I tested it over the weekend in my driveway for about 4 hours with 6 cars and it never missed a lap. I still need to tweak the code, but it is almost complete. I am using RClapdog software right now which works well enough and has enough features for me.

Does anyone know where I can find the data format use by other software packages to make my system more compatible?

I have attached photos of the first prototype controller, bridge and a transmitter. Obviously, any system for sale would be much more professionally constructed, eventually surface mount. For size reference, the transmitter is sitting on top of a standard Futaba servo in a BRP SC-18. It is powered by the receiver BEC. I have also considered putting the LED on a short harness to be mounted in the body.

I look forward to any comments,
Craig
 

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Discussion Starter · #5 ·
Luckyman4:
A 75" bridge is no problem. The receivers are spaced about 1 car width apart. Spaceing by 18/10 for a wider car would give 75". I still have more testing to do to make sure it can keep up with faster cars. My track is for a rental business like at car shows and I'm only running 4 cells. It should be good for 4 simultaneous (within 3") readings at 30 MPH.

Tres:
I haven't worked out any solid pricing yet, I am not ready to start selling anything yet. I'm trying to see if the demand warrants it. The transmitters are hard coded 1 through 8 because thats all I need for my setup. I could make them programmable so that It's ID could be changed if needed.

I'll probably throw together a simple web page with more details on the track and lap counter over the weekend.
 
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