Grocery List

An Arduino-based project that allows users to navigate and manage a predefined grocery list using an Arduino UNO R3, LCD1602, 3 buttons, and a 10k potentiometer.

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Features

• List Navigation with Wrapping Support:

  • Use the leftmost button to move up the list.
  • Use the next button to move down the list.
  • Wrapping support ensures that navigating past the last item returns to the first item, and vice versa.

• Item Removal:

  • Use the rightmost button to remove the currently highlighted item.
  • The list automatically updates to show the next available items. If the list is empty, a List is empty message is displayed.

• Display:

  • The LCD1602 shows 2 items at a time.
  • An arrow (<) indicates the currently highlighted item.
  • When only one item remains, it is displayed on the first line.

• Challenge:

  • Currently, there is no way to add new items to the list. This is left as a challenge for anyone who downloads the repository to try!

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Components Used

1. Arduino UNO R3
2. LCD1602 Display
3. 3 Buttons
4. 10k Potentiometer

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Wiring

A wiring diagram in JPG format is included in the repository to help set up the components correctly.

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Software Requirements

• Arduino IDE
  • Install the LiquidCrystal library through the Library Manager.

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Repository Contents

• Code/GroceryList/GroceryList.ino – The Arduino code for the project.
• wiring_diagram.jpg – A wiring diagram to assist with hardware setup.

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How It Works

1. Navigate the List:

   • Use the Up and Down buttons to move through the list.
   • The display wraps around when you reach the top or bottom of the list.

2. Remove an Item:

   • Highlight an item with the arrow (<).
   • Press the Remove button to delete it from the list.
   • The list updates automatically.

3. List Behavior:

   • If the last item is removed, the display shows List is empty.

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Challenge

Feel free to enhance this project by adding the ability to add new items to the list!

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Contributions

This project does not accept contributions. It is designed as a standalone challenge for individuals interested in Arduino projects.

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License

This project is license under MIT. Read here.

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Happy coding!