Laser Proximity Detector

Customized version of https://www.thingiverse.com/thing:468917

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=468917

I created this custom enclosure for this Laser Proximity Detector.

https://www.amazon.com/gp/product/B00NJNYQ9G

I added holes in the lid for the laser emitter and the lensed detector. I'm using this setup to detect holes in a wheel to measure speed in feet per minute of a cart. The display is this unit: https://www.thingiverse.com/thing:3352007

The backstop is needed because the laser will bounce off objects on the other side of the wheel. I glued static foam to the backstop which absorbs the laser beam and keeps it from bouncing back. Only the spokes of the wheel reflect the beam back to the detector.

Instructions

Using the following options:

width = 25

length = 56

height = 20

wall_thickness = 2.2

edge_roundness = 4

tolerance = 0.3

$fn = 20