Creating a track speedometer – Part 4 (It’s alive!!!)

It is alive and kicking!

I’ll be putting together a youtube video to see the full operation once I get the photoresistors mounted in the track at the club.


  • Simple 1 button calibration for your light source
  • You can fine tune the sensor positions from the default 100 ft.

Live Demo

The speedometer will be installed at the club layout very soon. Source code will also be posted.

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