Built to house an Arduino Uno board, a 9g micro servo, and a month's worth of fine grain fish food pushed out using an auger, this automatic fish feeder can be used to feed fish several times a day at varying amounts depending on how you use the Arduino code.

It's thick construction allows modifications such as drilling, sanding, and shaving to accommodate different sized servos or other printing imperfections.

This system is designed specifically to hang from an aquaponics planter and distribute food to the fish below.

See here for version 1: http://helioslabs.blogspot.com/2014/12/3d-printed-auto-fish-feeder.html

The code is the same and easily modified.

A detailed explanation for this version with more information can be found here: http://helioslabs.blogspot.com/2015/01/arduino-3d-printed-fish-feeder-v2.html

Have SketchUp? The files I used before exporting as .stl files and importing into MakerBot's software are now up on SketchUp's 3D Warehouse.

Exploded View :: https://3dwarehouse.sketchup.com/model.html?id=u84a55d24-bed0-4b04-aeca-24e8cfb974fe

Print Layout View :: https://3dwarehouse.sketchup.com/model.html?id=u4171ad09-6310-4798-bb3d-c867eb701067

Another feeder on Thingiverse (http://www.thingiverse.com/thing:301532) served as the starting point for this project. Thanks for sharing!

This is the second version. The first version can be seen here: http://helioslabs.blogspot.com/2014/12/3d-printed-auto-fish-feeder.html

The first version was very flimsy and required heavy modification (sanding, cutting, gluing of all parts). In all, it worked but just barely. This new design's auger is better suited for pushing out fine grain fish food and the thicker construction made it easy to install the 2mm screws needed to fit it together.

Using the low resolution on MakerBot's Replicator 2, produced decent results, but for example, the t-slots for the arms needed to be forced in a bit (very carefully). The auger also required a little modification to fit with the servo.