[Dr_C]

I’m going to call the configuration of digital slot car racing described in this thread ‘System-D’. The ‘D’ stands for development as the system is more of a development platform rather than being aimed as a commercial product.

Key features of this system:

1/ IR signalling for lap counting and lane changing using the Mark/Space timing method with signal inversion for lane change. This is designed for up to 36 cars.
2/ Enhanced track sensors for reading the IR signals which use 4 phototransistors in a row for increased performance on high speed tracks.
3/ Wireless communications from throttles to a central wireless hub which onward broadcasts the throttle data to the cars in a single multi-car packet refreshed every 10ms.
4/ Fast USB over-ride of packet data for advanced simulations and smart pacer cars.

Thanks for reading this overview post about the digital slot car racing configuration I am calling ‘System-D’.

c