Do you have a fish at home? Are you like me, and you occasionally forget to feed your water loving pet? If so, this project is perfect for you. Its Simple, Cheap, and fun to make!

This project is great for students who leave ealy and may not have time to feed fish in the morning

Please vote for this project in the DIY University contest and the Age of aquariums contest

This is an really cool arduino project, that uses just two electronic parts. The arduino sketch is set up to feed the fish every 12 hours, but you can change it to whatever number you like. After building, all you need to do, is to clip your device onto your aquarium and forget about it! Thats all you do!

Lets start building!

Note: I started a YouTube channel to document my projects better, subscribe for more projects!

Difficulty: easy..

Cost (Not counting Arduino): easy..

Step 1: You Will Need...

For this project you will need

SUPPLIES

Arduino
Servo (any kind)
Binder Clips
An empty shampoo bottle
Fish Food
Jumper Wires
Empty food takeout container (Clean or unused)

TOOLS

Drill
Hot Glue Gun
Computer (to code)

Step 2: Shampoo Bottle

Using a empty shampoo bottle and your drill, drill a small hole on both sides of the shampoo bottle.

This is where the food will fall out, so you should test if food falls out by filling it up, and rotating it while holding it horizontally

DONT DRILL TOO BIG OF A HOLE!

Your fish will end up fat!

Drill a hole small enough so only 1-5 pellets fall out, depending on the size or number of fish you have

Step 3: Wiring and Programing!

Wire the ardunio according to the above picture.

Using jumper wires, follow this pattern

Connect Yellow or data to PIN 9

Connect Black to GND
Connect Red to +5V

Next use the code I have provided to upload to your arduino

Note: I'm not the best Programmer........ I'm still learning, If you see anything I can improve Please Tell Me!

// CONSTRUCTED'S Fish Feeder
// https://www.instructables.com/member/Constructed/
// Donate for more projects! 


#include  
 
Servo myservo;  // create servo object to control a servo 
                // a maximum of eight servo objects can be created 
 
int pos = 0;    // variable to store the servo position 

long FISHFEEDER = 43200000; // 12 hours between feeding
long endtime; 
long now;

void setup() 
{ 
 
  myservo.attach(9);  // attaches the servo on pin 9 to the servo object 
  
  myservo.write(0);
  delay(15);
  
}
 
void loop() 
{ 
  now = millis();
  endtime = now + FISHFEEDER;
  
  while(now < endtime) {
   myservo.write(0);
   delay(20000);
   now = millis();   
  }
  

  for(pos = 0; pos < 180; pos += 1)  // goes from 0 degrees to 180 degrees 
  {                                  // in steps of 1 degree 
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(15);                       // waits 15ms for the servo to reach the position 
  } 
  for(pos = 180; pos>=1; pos-=1)     // goes from 180 degrees to 0 degrees 
  {                                
    myservo.write(pos);              // tell servo to go to position in variable 'pos' 
    delay(15);                       // waits 15ms for the servo to reach the position 
  } 
}