Topics: 3D Printing, Electronics

A year ago or so, I put a Neopixel strip on the my 3d printer so I could use the Marlin firmware's Printer Event LED's feature! This was a little trickier than I thought it would be for a couple of reasons. First, Adafruit recommends a 100 Ohm resistor between the controller and the data line input. Second, my 3d printer has a 24V power supply and I didn't want to use the MKS Gen 1.4 5V output because I didn't want to overpower it. So I made a super simple PCB to take care of that!

This is also my first time using a hashed style ground plane like you see in the image below, turns out I really like it. Definitely more fun than a solid ground plane. PCB was designed in Eagle.

• The buck convertor PCB can be found here on Amazon
• The wire terminals used can be found here on Amazon
• The PCB files can be found here on GitHub
• STL's for the 3d printed case can be found here on Thingiverse