Build a Better Speedtrap

Instead of using a box for your Hot Wheels Sparkfun Speedtrap, here is an update 'box' which holds the track and the LEDs/photocells in place better. You will need to change the distance between the sensors to 70mm. Also includes a channel to route the wires to the LEDs under the track.

Print it vertically with supports (for the sensor holes).

Full instructions on the Sparkfun Speedtrap can be found here: https://www.sparkfun.com/news/2179