Fish feeder

thingiverse

This is an automated fish feeder using just a servo motor and an Arduino Pro Micro with external power supply. I'm using a power bank that would enable to feed the fish for 4-5 days without me being home. The rechargable batteries could be installed inside the compartmente (there's plenty of space). See it in action:https://www.youtube.com/watch?v=SaXlFrONLec UPDATE: Added (updated) Arduino sketch code UPDATE 2: Made an auger with less helix - works much better Print Settings Printer: DIY Mendel90 (Nevex) Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: 0.3 Infill: 10% Notes: I printed all parts without support, but it may be useful to add them for the holes at the back plate ;) I used raft only for the auger part. This is also the most difficult to print, that's why i split it to the upper and lower section and then used a screw to fix them together. I found it best to lay the auger and print it with rafts. The auger standing and with supports did not come out very good. Post-Printing Sanding Some parts need sanding and the use of a file (especially the auger). Some of my failed attempts... Arduino Sketch - Feeding Program #include Servo myservo; // create servo object to control a servo int ServoPin = A0; // pin used to connect the servo int rot = 0; // rotation of the auger to feed the fish void setup() { delay(20000); // wait 20s after startup (just in case) myservo.attach(ServoPin); // enable servo } void loop() { myservo.write(rot); // rotate auger and feed fish delay(500); // do this for 500 ms - adjust to your needs myservo.detach(); // disable servo to prevent unwanted movement of auger delay(86400000); // wait 24 hours myservo.attach(ServoPin); // re-enable servo and repeat the loop } How I Designed This Concept I borrowed the design from this page: http://helioslabs.blogspot.si/2015/01/arduino-driven-3d-printed-fish-feeder.html I modified it quite a bit to fit my needs as the original is way to big and bulky for me. Then i redesigned all parts in SolidWorks (which are also all included for download). Custom Section And that's how it looks and works. I must say it's a very happy fish :D