This is an automatic fish feeder controlled by an Arduino. I tried several of the other automatic fish feeders listed online, and didn’t have much luck, so I designed my own. It’s designed to feed small food pellets, such as the Top Fin Betta Bits shown in the photos. The feeder arm contains a circular hole that is moved past the feeder bowl to meter out a small amount of food per actuation. If your fish need more (or less) simply change the code to update the feed interval. I’d recommend running a few cycles over a piece of paper to see if the mechanism feeds reliably for your chosen food, and to get the amount per feed cycle correct.
download the files on: https://www.thingiverse.com/thing:2539750
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!