Food Experimentation Device for precision feeding of mice. The system uses an Arduino processor, servo motor, IR beam detector, and SD card to log pellets taken. FED runs off of a battery.
Please see the wiki page for more information, including build instructions: https://github.com/eleciawhite/fed/wiki
The hardware directory contains the system schematics. The mechanical pieces can be found on TinkerCAD (https://www.tinkercad.com/users/69Zt0NRn4eA-katrina-nguyen). The software is in fed-arduino.