sparkfun / speed_trap

Use a LIDAR to display the speed of people walking by

SparkFun Speed Trap

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

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).

speed_trap's Issues

Pin Order

Just a suggestion but the pin order on line 24 of the code [https://github.com/sparkfun/Speed_Trap/blob/master/firmware/SparkFun_Speed_Trap/SparkFun_Speed_Trap.ino] should read A0 -> Power Enable. I.e.) From the Arduino Pin to the LIDAR pin. =)