C-0063

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RF Dream Case

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Description

The Retro Flag Dream Case is a meticulously designed, miniaturized enclosure specifically tailored for the Raspberry Pi 5. This case not only provides robust physical protection for your Raspberry Pi 5 but also adds a nostalgic aesthetic appeal reminiscent of classic computing devices. Whether you are a hobbyist, a retro computing enthusiast, or someone looking to create a unique setup, the Dream Case is an ideal choice to house and showcase your Raspberry Pi 5.

Features

  • Miniature and Retro Design

Compact Size: The Dream Case is designed to be miniaturized, making it perfect for those who want a small yet powerful setup. It fits snugly around the Raspberry Pi 5, ensuring that your device remains portable and space-efficient. Retro Aesthetic: The case features a classic design that evokes the charm of vintage computers. Its sleek lines and nostalgic appearance make it a standout piece in any collection or setup.

  • Compatibility

Raspberry Pi 5 Specific: This case is specifically engineered to fit the Raspberry Pi 5. It ensures a perfect fit, providing ample space for all the components while maintaining a snug and secure enclosure. Easy Assembly: The Dream Case is designed for easy assembly. It comes with all necessary components and instructions, allowing you to set up your Raspberry Pi 5 quickly and efficiently.

  • Protection

Durable Construction: Made from high-quality materials, the Dream Case offers robust protection against physical damage. It shields your Raspberry Pi 5 from dust, accidental bumps, and other potential hazards. Ventilation: The case features well-designed ventilation holes that ensure your Raspberry Pi 5 remains cool during operation. This helps in maintaining optimal performance and longevity of your device.

  • Functionality

Full Access to Ports: Despite its compact design, the Dream Case ensures full access to all ports and connectors on the Raspberry Pi 5. This includes USB ports, HDMI, Ethernet, and GPIO pins, allowing you to connect peripherals and accessories without any hassle. Reset Button Programming: The Retro Flag Dream Case offers programmable functionality for the reset button. Through simple Python programming, you can customize the function of the reset button. For example, you can set it to reboot the Raspberry Pi 5, shut down the device, or execute other custom tasks. This flexibility allows you to tailor the case’s functionality to your specific needs, enhancing your overall experience.

Gallery

  • Product outlook
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  • Inside of the product
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  • Dimension
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  • Programable reset button
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  • Connector details

There is a connector should be connect to the correct GPIO Pins on Raspberry Pi 5.

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  • Application scenario
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How to assemble it?

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How to Program the Reset Button on Retro Flag Dream Case

Introduction

The Retro Flag Dream Case for Raspberry Pi 5 includes a programmable reset button connected to GPIO2 (using the BCM naming system). This feature allows you to customize the behavior of the reset button using Python programming. By default, the provided demo code triggers a system shutdown when the button is pressed. However, you can modify this code to suit various applications and needs.

Prerequisites

Before you begin, ensure that you have the following:

  • A Retro Flag Dream Case for Raspberry Pi 5
  • A Raspberry Pi 5 with Raspbian OS installed
  • Basic knowledge of Python programming
  • Access to the terminal or a Python IDE

Step-by-Step Guide

  • 1. Setting Up the Environment

Connect to Your Raspberry Pi: Access your Raspberry Pi 5 via SSH or directly using a monitor and keyboard. Open the Terminal: You can use the terminal to run commands and edit scripts.

  • 2. Installing Required Libraries

Ensure that you have the RPi.GPIO library installed. This library allows you to interact with the GPIO pins on your Raspberry Pi. 

sudo apt-get update
sudo apt-get install python3-rpi.gpio
  • 3. Creating the Python Script

Open a Text Editor: You can use any text editor like nano, vim, or a graphical editor. Create a New Python Script: Save the following code in a file named reset_button.py. 

import RPi.GPIO as GPIO
import subprocess as sp
import time

# Set up GPIO using BCM numbering
GPIO.setmode(GPIO.BCM)

# Set up GPIO2 as an input pin
GPIO.setup(2, GPIO.IN, pull_up_down=GPIO.PUD_UP)

def reset_detected(channel):
    print("Reset detected!")
    # Trigger system shutdown
    sp.getoutput("sudo init 0")

# Add event detection to GPIO2
GPIO.add_event_detect(2, GPIO.FALLING, callback=reset_detected, bouncetime=200)

print("Waiting for reset button press...")

# Keep the script running
try:
    while True:
        time.sleep(1)
except KeyboardInterrupt:
    print("Exiting...")
finally:
    GPIO.cleanup()
  • 4. Understanding the Code

GPIO Setup: The script sets up GPIO2 as an input pin using the BCM numbering system. Event Detection: The GPIO.add_event_detect function is used to detect when the button is pressed (GPIO2 goes low). The callback function reset_detected is triggered when this event occurs. Bouncetime: The bouncetime parameter helps debounce the button, preventing multiple detections from a single press. System Shutdown: When the button is pressed, the script triggers a system shutdown using sudo init 0.

  • 5. Running the Script

Run the Script: Execute the script using Python 3. 

python3 reset_button.py

Testing: Press the reset button on your Retro Flag Dream Case. The script should print "Reset detected!" and trigger a system shutdown.

Customizing the Script

You can modify the script to perform different actions when the reset button is pressed. Here are some ideas:

  • Reboot the System: Replace sp.getoutput("sudo init 0") with sp.getoutput("sudo reboot").
  • Run a Custom Script: Execute a custom Python script or shell script.
  • Log an Event: Write an entry to a log file instead of shutting down the system.
  • Control Other Hardware: Use the button press to control other GPIO-connected devices.

To make your Python script run automatically at startup using a systemd service, you can follow these steps. This method ensures that your script starts as soon as your Raspberry Pi boots up.

Step-by-Step Guide to Create a systemd Service

  • Create the systemd Service File
  • Open the Terminal: Access your Raspberry Pi via SSH or directly using a monitor and keyboard.
  • Create a New Service File: Use a text editor to create a new systemd service file. For example, you can use nano:
 sudo nano /etc/systemd/system/reset_button.service
  • Add the Following Content:
[Unit]
Description=Reset Button Service
After=multi-user.target

[Service]
Type=simple
ExecStart=/usr/bin/python3 /path/to/your/reset_button.py # please replace the script location of your python script. 
Restart=always
User=pi
Group=pi

[Install]
WantedBy=multi-user.target

Explainations

  • Description: A brief description of the service.
  • After: Specifies that this service should start after the multi-user target is reached.
  • Type: simple indicates that the service should start immediately.
  • ExecStart: The full path to your Python script.
  • Restart: Ensures the service restarts if it fails.
  • User and Group: Specifies the user and group under which the script should run. You can change pi to your username if different.
  • WantedBy: Specifies that this service should start when the multi-user target is reached.

Enable and Start the Service

Reload systemd Manager Configuration: This step ensures that systemd knows about the new service file. 

sudo systemctl daemon-reload
  • Enable the Service: This command enables the service to start at boot.
sudo systemctl enable reset_button.service
  • Start the Service: You can start the service immediately to test it.
sudo systemctl start reset_button.service

Check the Service Status

Verify the Service is Running: Use the following command to check the status of your service. 

sudo systemctl status reset_button.service

This command will show you the current status of the service, including any errors or output from your script.

Testing the Setup

Reboot Your Raspberry Pi: To ensure that the service starts automatically at boot, reboot your Raspberry Pi. 

sudo reboot

Check the Service Again: After rebooting, check the status of the service again to confirm it started automatically. 

sudo systemctl status reset_button.service

Troubleshooting

Check Logs: If the service does not start as expected, you can check the logs for more information. 

sudo journalctl -u reset_button.service

Permissions: Ensure that the Python script has the correct permissions to run. You can make it executable with: 

sudo chmod +x /path/to/your/reset_button.py

Path to Python: Ensure that the path to Python in the ExecStart line is correct. You can find the path using: 

which python3

By following these steps, you can ensure that your Python script runs automatically at startup using a systemd service. This setup is robust and ensures that your script starts even if the Raspberry Pi reboots unexpectedly.

Package List

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Keywords

  • Retro flag Dream case, dream case for Raspberry Pi 5, retro case for Raspberry Pi 5, Pi5 case, retrogame case for Raspberry Pi 5.
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