A super-simple device for dispensing pre-measured food (for pets or research) at regular intervals throughout the day

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SnackClock dispenses food at regular intervals throughout the day. It was designed for use with mice in a research setting, but can be used for pets or other applications requiring a regular dispense of a pre-measured quantify of food.

This is a VERY simple feeding device.  SnackClock utilizes a 24-hour clock movement and two 3D printed pieces to dispense food at regular intervals. Basically the clock goes around and pushes food out.  There is no coding or micro-controller required and the clock movement should run for >1 year on a single AA battery.  

The 3D parts can be adapted to fit different types of caging. 

Snackclock could be to use a stepper motor for less regular or irregular dispensing times.  For instance, a "weekly" clock movement could be a good "vacation" fish feeder.  Check out this blog post by Mahto about how to mess with the timing of a clock movement.  Please post comments on how this works out if you try this!

Funding and terms:

This project was funded by the NIH Intramural Research Program (NIDDK). This project is released under the terms of the Creative Commons - Attribution - ShareAlike 3.0 license:

  human readable:
  legal wording:


SnackClock 3D base

Standard Tesselated Geometry - 33.65 kB - 03/26/2018 at 13:19



SnackClock 3D disk

Standard Tesselated Geometry - 33.65 kB - 03/26/2018 at 13:19


View all 3 project logs

  • 1
    Print the two 3D parts
  • 2
    Assemble the Snackclock!
  • 3
    Place in caging and fill slots with food. SnackClock will turn the inner disk once per day, dispensing the food at regular intervals.

View all 3 instructions

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