The Juice Dispenser Machine is an automated system that allows users to select and dispense predefined amounts of various liquids (juices). It is built using an Arduino Mega microcontroller, an LCD display for user interaction, multiple push buttons for selection, and relays to control liquid dispensing pumps. The system is designed to offer precise control over the amount of liquid dispensed, ensuring consistency and efficiency.

Objective of Juice Dispenser Machine:

The primary objective of this Project is to Make a Cost effective, Custom and User Friendly Juice Dispenser Machine.

Components used in Juice Dispenser Machine:

following components are used in this project

• Arduino Mega: The central controller that processes user input and controls the dispensing mechanism.
• LiquidCrystal_I2C LCD Display: Displays menu options and liquid quantities for user interaction.
• Push Buttons: Used for selecting liquids, adjusting quantities, and starting the dispensing process.
• Relay Module: Controls pumps to dispense the selected juice.
• Liquid Pumps: Deliver the liquid from reservoirs to the dispensing outlet.

Functionality of Juice Dispenser Machine:

• Arduino Mega: The central controller that processes user input and controls the dispensing mechanism.
• LiquidCrystal_I2C LCD Display: Displays menu options and liquid quantities for user interaction.
• Push Buttons: Used for selecting liquids, adjusting quantities, and starting the dispensing process.
• Relay Module: Controls pumps to dispense the selected juice.
• Liquid Pumps: Deliver the liquid from reservoirs to the dispensing outlet.

Functionality

1. User Interface:
   • The LCD screen displays a menu with available juice options and their respective dispensing quantities.
   • Users can navigate through the menu using push buttons.
   • The system allows users to adjust the quantity of juice before dispensing.
2. Juice Selection and Dispensing:
   • Each juice type is assigned to a button and a corresponding relay.
   • Pressing a button activates the respective relay and pump, allowing the selected amount of juice to be dispensed.
   • The dispensing time is calculated based on predefined quantities, ensuring accurate portions.
3. Adjustable Quantities:
   • Users can modify the dispensing amount through the interface before selecting a juice.
   • The system saves and updates these values dynamically.
4. Safety Features:
   • The system ensures that only one pump operates at a time to prevent liquid overflow.
   • Relays automatically turn off once the pre-set amount has been dispensed.

Working of Juice Dispenser Machine:

1. When powered on, the LCD displays the main menu.
2. The user navigates through different juice options using the push buttons.
3. After selecting a juice, the user can modify the quantity.
4. Once confirmed, the Arduino activates the corresponding relay, turning on the pump for a calculated duration to dispense the juice.
5. The pump stops after the required amount has been dispensed, and the system resets for the next operation.

Circuit Diagram of Juice Dispenser Machine:

Code for Juice Dispenser Machine:

Applications of Juice Dispenser Machine:

• Automated juice vending machines in restaurants and cafes.
• Self-service juice dispensers in public areas.
• Efficient portion control for beverage distribution.

Conclusion:

This Arduino Mega-based Juice Dispenser Machine provides an efficient and precise way to serve juice. Its user-friendly interface, adjustable dispensing options, and automation capabilities make it an ideal solution for various applications. The system can be further enhanced by integrating payment systems, IoT connectivity, or additional sensors for monitoring juice levels.

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