Arduino Project

Arduino Automatic Pet Feeder with Servo Motor

Kit purchase

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

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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.

1.1 Install Arduino IDE(Important)
1.2 Introduction of Arduino IDE

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

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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) 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);
  }
}

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Arduino Project

Arduino Automatic Pet Feeder with Servo Motor

Kit purchase

Course Introduction

Required Components

Wiring

Common Connections:

Writing the Code

Arduino Project

Arduino Automatic Pet Feeder with Servo Motor

Kit purchase

Course Introduction

Required Components

Wiring

Common Connections:

Writing the Code

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