Published July 2, 2021 © GPL3+

PGF(Programmable GoldFish Feeder)

This Goldfish Feeder can feed fish when you are not at home, and you can easily change the feeding frequency and feed amount.

BeginnerFull instructions provided187

Things used in this project

Hardware components

Arduino UNO

Photo resistor

SG90 Micro-servo motor

LED (generic)

Resistor 221 ohm

LED Chain

Jumper wires (generic)

Male/Female Jumper Wires

Breadboard (generic)

Cut_In_Half Bottle

Card

USB-A to B Cable

USB-To-Wall Adapter

Any tape

And... A Fish Tank and some Fishies!

Software apps and online services

Arduino IDE

Hand tools and fabrication machines

Scissors

Ruler

Story

I have three goldfish, and time to time, more and more, I accidentally forget to feed them. I noticed they stopped growing, and began to be concerned. I decided, with a great Arduino at my hands, that I could create an automated feeder that would do the job for me. And due to the fact that the nearest electronic store is a couple of hours away, I had little kit. So I needed to work with what I had, meaning the project had to be simple.

In a day or two of hard work, prototyping and testing, the fish-tastic solution was completed.

Very easily can one change the time between the feeding hours and how much is fed, and it doesn't feed at night. There is also a LED Chain that wraps around the tank that turns on in day, and dims at night.

Unfortunately, the wall behind the fish tank was very slippery, so I couldn't really stick anything firm to it. So the things are dangling from there, very sensitive. But without human contact, the contraption works fine feeding my scaly sidekicks!

A Sketch Of Fish Eating Food From The PGFF!

Code

Code

#include <Servo.h>
#define MOTOR 9
int time;
int sensorReading = 0;
int pos = 0;
/*
    The default time is 10800000, or 3 hours. 
    If you want to quickly calculate your time, multiply
    your time by 3,600,000 to get milliseconds.
*/
int noFeed = 9000000;
Servo servo_9;
void setup() {
  pinMode(6, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(2, OUTPUT);
  for (pos = 180; pos >= 0; pos -= 1) {
    servo_9.write(pos);
  }
  servo_9.attach(9, 500, 2500);
  int servo = 10;
   pinMode(A0, INPUT);
  Serial.begin(9600);

}

void loop() {
  digitalWrite(4, HIGH);
  analogWrite(6, 255);
  sensorReading = analogRead(A0);
  Serial.print("brightness---  ");
  Serial.println(sensorReading);
  Serial.print("time set is ====");
  Serial.println(noFeed);
  if (sensorReading <= 380) {
    analogWrite(6, 50);
    delay(7200000);
  }
  delay(noFeed);
  digitalWrite(4, LOW);
  digitalWrite(2, HIGH);

   for (pos = 0; pos <= 180; pos += 13) {
    if (sensorReading <= 380) {
      analogWrite(6, 50);
    delay(7200000);
  }
    servo_9.write(pos);
    delay(15);
    
  }
  for (pos = 180; pos >= 0; pos -= 1) {
    if (sensorReading <= 380) {
      analogWrite(6, 50);
    delay(7200000);
  }
    servo_9.write(pos);
  }
  digitalWrite(2, LOW);
  if (sensorReading <= 380) {
    analogWrite(6, 50);
    delay(7200000);
  }

}


//The End!\\

Credits

science_is_maths

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PGF(Programmable GoldFish Feeder)

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Schematics

The Connections

Code

Code

Credits

science_is_maths

Comments

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PGF(Programmable GoldFish Feeder)

PGF(Programmable GoldFish Feeder)

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Schematics

The Connections

Code

Code

Credits

science_is_maths

Comments

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