Project Hub/Robotics & Autonomous Systems/Motor Drivers & Motion Control/Blynk Controlled Automatic Pet Feeder with Timer

Beginner

ESP8266

₹1,500 – ₹5,000

3 – 6 Hours

Blynk Controlled Automatic Pet Feeder with Timer

An IoT-based automatic pet feeder built using a NodeMCU ESP8266 and Blynk App, allowing users to feed pets remotely via manual trigger or preset schedules.

Originally published by Ashish Choudhary on CircuitDigest

View original tutorial

How It Works

The Blynk Controlled Automatic Pet Feeder with Timer is an IoT-enabled system centered around the NodeMCU ESP8266 microcontroller, which connects to your home wireless network using the ESP8266WiFi library. To manage precise feeding schedules without manual internet timekeeping, the system utilizes the NTPClient library to fetch accurate time updates from Network Time Protocol servers over the internet. When a scheduled time is reached or a manual button is pressed on the Blynk Cloud / Blynk App interface (Blynk 2.0 Libraries), the NodeMCU triggers an output signal. This signal controls a Servo Motor (or a DC Motor with 3D printed gear) to open and close the food dispensing mechanism on the Pet Feeder Box/Container. Power is supplied to the system via a 12V Power Adapter, connected using jumper wires to ensure all components receive adequate operating voltage while the microcontroller handles the logic and wireless communication.

Why Build This

Automate feeding routines for pets when you are away from home, working long hours, or traveling, ensuring your pets are fed precisely on time.

Gain hands-on experience combining cloud-based IoT applications with physical hardware using popular maker platforms like Blynk and ESP8266.

Real-World Application

Automated pet feeding systems for pet owners who are away from home, working long hours, or traveling, ensuring pets are fed on time.

Skills You'll Learn

Wi-Fi microcontroller programming

IoT cloud integration

servo motor control

NTP time synchronization

basic circuit wiring

Safety Precautions

No specific precautions noted for this build — always follow general electronics safety practices.

Technology Tags

IOT

NODEMCU

ESP8266

BLYNK

SERVO MOTOR

NTPCLIENT

WI-FI

C++

ARDUINO IDE

Frequently Asked Questions

Can I use this pet feeder without an internet connection?

No, this project relies on the NodeMCU ESP8266 connecting to Wi-Fi and the Blynk Cloud, as well as syncing time via NTP servers over the internet.

How is power supplied to the NodeMCU and the motor?

The system uses a 12V power adapter to provide sufficient power for the electronics and actuator mechanism, distributed using jumper wires.

Do I need to write the code from scratch?

You will need the Arduino IDE along with specific libraries like the ESP8266WiFi, NTPClient, Servo, and Blynk 2.0 Libraries to upload and configure the software.