Know How... 178

How to wire an Arduino to WS2812 lights, using an ultrasonic sensor with collision avoidance, and 3D templates for Tinkercad.

Arduino: Collision Avoidance

Parts

1. Arduino Uno ($3.61) 

2. HC-SR04 Ultrasonic Sensor ($0.99) 

3. PixelStick ($3.25)  

3D Printing

Arduino Tray

SR04

Arduino: Collision Avoidance (II)

FastLED.h (Library)  

Arduino Code 

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