Automatic Pellet Feeder for Shrimp Aquarium 3d model
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Automatic Pellet Feeder for Shrimp Aquarium

Automatic Pellet Feeder for Shrimp Aquarium

by Thingiverse
Last crawled date: 4 years, 3 months ago
Have you wanted to automate feeding your small family of shrimp? But find automatic fish feeders dump way too much food every day, polluting the water?
HI JOSH HERE AGAIN WITH THE AUTOMATIC PELLET FEEDER FOR SHRIMP
FEED YOUR SHRIMP UP TO 32 TIMES WITH JUST A SINGLE PELLET AT A TIME
FITS ON ANY 3.6MM RIMLESS AQUARIUM
SOME ASSEMBLY REQUIRED
Parts
Printed Automatic Pellet Feeder for Shrimp: base, carousel and optional lid
Arduino with 4 free digital output pins and 5v
Elegoo 28BYJ-48 ULN2003 5V Stepper Motor + ULN2003 Driver Board or equivalent
2x M3 screws (2.3mm head height)
2x M3 nuts
1x boba tea (extra large) straw, optional
Hardware
Bolt the stepper motor to the base using the M3 parts, screw facing up
Pressure-fit carousel onto stepper motor shaft
Optionally superglue the straw to the dispenser chute to guide sinking food down
Wire the Arduino to the stepper motor & controller board as seen in Thing photo
Firmware
Open the attached .ino sketch file in Arduino IDE
In Arduino IDE: Sketch -> Include Library -> Manage Libraries.... Then search and install accelstepper (currently 1.59.0)
Customize parameters like rotation interval, reservoirs per interval
Upload sketch file to program the Arduino
Feed my shrimp already
Hand align a carousel reservoir with the dispenser chute
Fill every other carousel reservoir with desired dose of food
on power up/reset, the feeder will rotate once so you know it is working

Power Arduino and stepper motor assembly (5v USB or power supply)
Go on vacation
Shrimp get fed

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