To place the sensor out under a bush or fence for Halloween, I wanted to run a long length of CAT5 cable from it to the Arduino Uno running things. I mounted the rangefinder (a Maxbotix from Adafruit) to a RJ45 breakout board from Sparkfun, angling it up so the sensor can be placed low to the ground.
In the original application, I was able to hide this under a giant furry Neverbeast head (from Tinkerbell and the Legend of the Neverbeast) coming out of the floor in the lobby of Disneytoon Studios. But now I needed to place on outdoors, so I decided to model and 3D print this little enclosure.
Finally, I mounted another RJ45 breakout in my Arduino/WaveShield case and ran the voltage, signal, and ground wires to the Arduino.
Now, I’ll be able to set this up to scare trick or treaters this Halloween as they get near the house.