27 Feb '15, 9pm

3D Printed Fish Feeder

[Helios Labs] recently published version two of their 3D printed fish feeder . The system is designed to feed their fish twice a day. The design consists of nine separate STL files and can be mounted to a planter hanging above a fish tank in an aquaponics system. It probably wouldn’t take much to modify the design to work with a regular fish tank, though. The system is very simple. The unit is primarily a box, or hopper, that holds the fish food. Towards the bottom is a 3D printed auger. The auger is super glued to the gear of a servo. The 9g servo is small and comes with internal limiters that only allow it to rotate about 180 degrees. The servo must be opened up and the limiters must be removed in order to enable a full 360 degree rotation . The servo is controlled by an Arduino, which can be mounted directly to the 3D printed case. The auger is designed in such a way as...

Full article: http://hackaday.com/2015/02/27/3d-printed-fish-feeder/

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