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Raspberry Pi Pico Project: Nerdy Digital Dice (D4 to D20)
BY 6vjhr
July 7, 2025
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Digital Dice Project Overview
Introduction
Ideal project for beginners to learn about microcontrollers, circuits, and programming.
The project involves creating a digital dice set using a microcontroller, a display, and a button.
Requirements
Materials Needed:
Microcontroller (e.g., Raspberry Pi Pico, Raspberry Pi Pico 2, Arduino)
Small OLED display (e.g., 0.91 inch)
Two push buttons
Breadboard
Connecting wires
A PC to program the microcontroller using Thonny IDE and MicroPython
Project Components and Setup
Microcontroller:
Raspberry Pi Pico utilized with MicroPython.
Display:
Connect the display using I2C protocol.
SC pin: Connect to GPIO 15.
SDA pin: Connect to GPIO 14.
Power pins: Connect to 3.3V and ground.
Buttons:
First button to roll the dice.
Second button to select dice type (e.g., 4-sided, 6-sided, 8-sided, 12-sided, 20-sided).
Connect one side of the button to ground and the other side to respective GPIO pins.
Coding Aspects
MicroPython Code:
Uses the I2C protocol for controlling the display.
Implement functions to:
Initialize the display driver.
Read button inputs with debouncing.
Update the display with the current dice number.
Button Handling:
Handle button press events to modify dice type and initiate rolls.
Address button bouncing by implementing debouncing logic.
Display Logic
Custom Font Display:
Define custom pixel arrays for numbers and dice faces.
Use functions to print these arrays on the display.
Conclusion
A versatile beginner project that can be extended to use buttons and displays for various applications.
Encouragement to provide feedback and request additional projects.
Project code is available on GitHub for reference and use.
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Raspberry Pi Pico Project: Nerdy Digital Dice (D4 to D20)