Make a Mini Disco Ball
This is a 3D model for a mini disco ball. Print it out.
You may also need a gear motor.
Install the 12-lights led and gear motor into the printed base with reference to the diagram;
The exterior is completed;
Connect the reflecting ball to the gear motor using the printed linking components (here I have used hot glue instead), connect to Arduino and then upload the codes (Codes for the LED ring are sample codes from the Adafruit_NeoPixel library).
read original artical:https://www.dfrobot.com/blog-521.html