https://github.com/yamil-serrano/esp8266-keypad-password-entry-system

This project utilizes an ESP8266 microcontroller to create a secure password entry system using a 4x4 keypad and a buzzer. The user can input a predefined password, and the system will indicate whether the entered password is correct or incorrect using sound feedback.
https://github.com/yamil-serrano/esp8266-keypad-password-entry-system

4x4-matrix-keypad arduino buzzer esp8266

Last synced: 4 months ago
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This project utilizes an ESP8266 microcontroller to create a secure password entry system using a 4x4 keypad and a buzzer. The user can input a predefined password, and the system will indicate whether the entered password is correct or incorrect using sound feedback.

• Host: GitHub
• URL: https://github.com/yamil-serrano/esp8266-keypad-password-entry-system
• Owner: Yamil-Serrano
• License: mit
• Created: 2024-09-26T19:54:06.000Z (9 months ago)
• Default Branch: main
• Last Pushed: 2025-02-12T00:51:58.000Z (5 months ago)
• Last Synced: 2025-02-12T01:38:48.599Z (5 months ago)
• Topics: 4x4-matrix-keypad, arduino, buzzer, esp8266
• Language: C++
• Homepage:
• Size: 384 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

        
# ESP8266 Keypad Password Entry System

## Overview

This project demonstrates a password entry system using the ESP8266 microcontroller, a 4x4 keypad, and a buzzer. Users can input a predefined password through the keypad, and the system will provide audio feedback indicating whether the entered password is correct or incorrect.

## Features

- **4x4 Keypad Input**: Easy password entry via a matrix keypad.

- **Password Verification**: Checks the entered password against a predefined one.

- **Audible Feedback**: Provides sound notifications through a buzzer for correct and incorrect password entries.

- **Serial Monitor Output**: Displays input and verification results on the Serial Monitor for debugging and monitoring.

# Assembly schematic

![image](https://github.com/user-attachments/assets/b6dbf939-2df2-4980-a1c3-a7d0987dd2a5)

## Requirements

- **Hardware**: 

  - ESP8266 microcontroller (e.g., NodeMCU)

  - 4x4 matrix keypad

  - Buzzer

  - Breadboard and jumper wires

- **Software**:

  - [Arduino IDE](https://www.arduino.cc/en/software) or use PlatformIO on VS Code

### Pin Connections

- **Keypad:**

  - Row Pins: GPIO5, GPIO4, GPIO14, GPIO12

  - Column Pins: GPIO13, GPIO0, GPIO16, GPIO2

- **Buzzer:**

  - Connect to GPIO15

## Installation

1. **Clone the Repository**:

   ```bash

   https://github.com/Yamil-Serrano/ESP8266-Keypad-Password-Entry-System.git

## License

This project is licensed under the [MIT License](LICENSE.md).

## Contact

If you have any questions or suggestions, feel free to reach out to me:

GitHub: [Neowizen](https://github.com/Yamil-Serrano)