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The box can be easily printed in any material with just some support material for the front opening part. To mount the Arduino, three screws M3x10mm are required and for the Neopixel matrix four screws M3 with a length from 10 to 16mm will do.
I used an external power supply (5V DC, 3A) to power the Arduino as well as the Neopixel matrix.
The wires connections are very easy. The DIN of the Neopixel Matrix has to be connected to a PWM pin of the Arduino (by default the Neopixel library of Adafruit uses the pin number 6).
The ground of the matrix has to be connected to the GND of the Arduino.
The 5V of the matrix DOESN’T have to be connected to the 5V of the Arduino! because it can only provide 500mA of current. To solve this, I soldered it directly to the positive pin of the 2.1mm Jack connector of the Arduino so that the matrix is directly powered by the power supply.
Every Thursday is #3dthursday here at Adafruit! The DIY 3D printing community has passion and dedication for making solid objects from digital models. Recently, we have noticed electronics projects integrated with 3D printed enclosures, brackets, and sculptures, so each Thursday we celebrate and highlight these bold pioneers!
Have you considered building a 3D project around an Arduino or other microcontroller? How about printing a bracket to mount your Raspberry Pi to the back of your HD monitor? And don’t forget the countless LED projects that are possible when you are modeling your projects in 3D!
The Adafruit Learning System has dozens of great tools to get you well on your way to creating incredible works of engineering, interactive art, and design with your 3D printer! If you’ve made a cool project that combines 3D printing and electronics, be sure to let us know, and we’ll feature it here!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.