Pet Feeder

Note

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Kit purchase

Looking for parts? Check out our all-in-one kits below — packed with components, beginner-friendly guides, and tons of fun.

../_images/elite_explore_kit.png

Name

Includes Arduino board

PURCHASE LINK

Ultimate Sensor Kit

Arduino Uno R4 Minima

BUY

Elite Explorer Kit

Arduino Uno R4 WiFi

BUY

3 in 1 Ultimate Starter Kit

Arduino Uno R4 Minima

BUY

Universal Maker Sensor Kit

×

BUY

Course Introduction

In this lesson, you’ll use a servo motor, a button, and Arduino to create a simple automatic pet feeder system.

Pressing the button rotates the servo to open the feeder lid and dispense food. Releasing the button returns the servo to its original position, stopping the feeding process.

Note

If this is your first time working with an Arduino project, we recommend downloading and reviewing the basic materials first.

Required Components

In this project, we need the following components:

SN

COMPONENT INTRODUCTION

QUANTITY

PURCHASE LINK

1

Arduino UNO R4 Minima/Arduino UNO R4 WIFI

1

BUY

2

USB Type-C cable

1

3

Breadboard

1

BUY

4

Wires

Several

BUY

5

Button

1

BUY

6

Digital Servo Motor

1

BUY

Wiring

../_images/feed_bb.png

Common Connections:

  • Digital Servo Motor

    • Connect to breadboard’s positive power bus.

    • Connect to breadboard’s negative power bus.

    • Connect to 9 on the Arduino.

  • Button

    • Connect to the breadboard’s negative power bus, and the other end to 2 on the Arduino board.

Writing the Code

Note

  • You can copy this code into Arduino IDE.

  • To install the library, use the Arduino Library Manager and search for LiquidCrystal I2C and install it.

  • Don’t forget to select the board(Arduino UNO R4 Minima/WIFI) and the correct port before clicking the Upload button.

#include <Servo.h>

const int SERVO_PIN = 9;
const int BUTTON_PIN = 2;

const int SERVO_CLOSED_ANGLE = 0;
const int SERVO_OPEN_ANGLE = 90;

Servo feederServo;

void setup() {
  pinMode(BUTTON_PIN, INPUT_PULLUP);

  feederServo.attach(SERVO_PIN);
  feederServo.write(SERVO_CLOSED_ANGLE);
}

void loop() {
  bool buttonPressed = (digitalRead(BUTTON_PIN) == LOW);

  if (buttonPressed) {
    feederServo.write(SERVO_OPEN_ANGLE);
  } else {
    feederServo.write(SERVO_CLOSED_ANGLE);
  }
}