Use a LIDAR to display the speed of people walking by
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Wall Display.png

SparkFun Speed Trap

This is a project demonstrating how to display instantaneous speed from a LIDAR on two large 7-segment displays.

Speed displayed on wall

Note the handprints on the wall...

The new LIDAR-Lite from PulsedLight is pretty nice. It outputs readings very quickly. From multiple distance readings we can calculate speed (velocity is the derivative of position).

Repository Contents

  • /firmware - The code that runs on the Arduino
  • /hardware - An Arduino shield to easily connect a computer PSU and the 6 wires for the large digit driver backpack

License Information

This design is OSHW and public domain but you buy me a beer if you use this and we meet someday (Beerware license).