Raspberry Pi hardware overview (GPIO, USB, HDMI) - Mini Project: Build & Apply

Raspberry Pi Hardware Overview: GPIO, USB, HDMI

📖 Scenario: You have a Raspberry Pi and want to understand its main hardware parts: the GPIO pins, USB ports, and HDMI port. This knowledge helps you connect sensors, keyboards, and displays correctly.

🎯 Goal: Build a simple Python program that stores information about the Raspberry Pi's GPIO pins, USB ports, and HDMI port, then displays this information clearly.

📋 What You'll Learn

Create a dictionary with exact GPIO pin numbers and their functions

Create a variable for the number of USB ports

Create a variable for the HDMI port type

Print all the hardware information in a clear format

💡 Why This Matters

🌍 Real World

Understanding Raspberry Pi hardware ports helps you connect sensors, keyboards, and displays correctly when building projects.

💼 Career

Many tech jobs require knowledge of hardware interfaces and how to programmatically access and display hardware information.

1

Create a dictionary for GPIO pins

Create a dictionary called gpio_pins with these exact entries: 17: 'GPIO17', 18: 'GPIO18', 27: 'GPIO27', 22: 'GPIO22'

Raspberry Pi

# Create the gpio_pins dictionary with the given entries
# Your code here

Need a hint?

Use curly braces to create a dictionary with keys as pin numbers and values as their names.

2

Add USB ports count and HDMI port type

Add a variable called usb_ports and set it to 4. Add another variable called hdmi_port and set it to 'HDMI 2.0'.

Raspberry Pi

gpio_pins = {17: 'GPIO17', 18: 'GPIO18', 27: 'GPIO27', 22: 'GPIO22'}
# Add usb_ports and hdmi_port variables below
# Your code here

Need a hint?

Use simple assignment statements to create these variables.

3

Create a summary string with hardware info

Create a variable called summary that stores a string describing the Raspberry Pi hardware. Use an f-string to include the number of USB ports from usb_ports and the HDMI port type from hdmi_port. The string should be exactly: "This Raspberry Pi has 4 USB ports and an HDMI 2.0 port."

Raspberry Pi

gpio_pins = {17: 'GPIO17', 18: 'GPIO18', 27: 'GPIO27', 22: 'GPIO22'}
usb_ports = 4
hdmi_port = 'HDMI 2.0'
# Create the summary string using an f-string
# Your code here

Need a hint?

Use an f-string with curly braces to insert variable values inside the string.

4

Print the GPIO pins and summary

Use a for loop with variables pin and name to iterate over gpio_pins.items(). Inside the loop, print each pin and its name in the format: "Pin 17: GPIO17". After the loop, print the summary variable.

Raspberry Pi

gpio_pins = {17: 'GPIO17', 18: 'GPIO18', 27: 'GPIO27', 22: 'GPIO22'}
usb_ports = 4
hdmi_port = 'HDMI 2.0'
summary = f"This Raspberry Pi has {usb_ports} USB ports and an {hdmi_port} port."
# Print each GPIO pin and its name
# Then print the summary
# Your code here

Need a hint?

Use a for loop to print each pin and name, then print the summary string.