Not making it for street racing. A new track is forming near my town.
hello . i know this is a old topic but i was wondering if you got a working modell with arduino ??
im trying to builda similar set
I just saw this thread, thought I'd give my 2 cents worth....
My project is for slot cars, NOT full-scale cars (just so we're clear...)
I have written an xmas tree timer sketch for the starting line, redlight, etc. It works, and it can display a light for the winning lane. I want to expand the capabilities so it displays the winning time on a 16x2 display. There are not enough pins on a single UNO board to do this, so I am investigating connecting a 2nd board (I2C ? ) to complete this project.
I am using 2 LDRs, 1/lane for the start. When the car breaks the beam, the LDR reading goes LOW, so an early start can be detected. And, 2 LDRs at the finish, same logic.
My code is fairly simple, and it SEEMS to work (in my testing, at least...). In slot cars, 1/1,000 second isn't really relevant.....
If you want to see my code/hardware layout, just ask.
Thx
If you want to see my code/hardware layout, just ask.
Well If your going to revive a 5 yr old thread you could at least contribute something 
I want to expand the capabilities so it displays the winning time on a 16x2 display. There are not enough pins on a single UNO board to do this, so I am investigating connecting a 2nd board (I2C ? )
Why not just use an I2C display?
Sorry, didn't realize the thread was so old (is there a statute of limitations on threads?? ??? ).
Anyway, I don't currently have access to my latest code, but can post it when I can get to it.
In the meantime, thanks, Hutkikz - reason I did not use an I2C display is that I wasn't aware they existed (newbie..). But it appears that would solve my pin issues. Good tip, thanks.
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