Displaying sensor readings on OLED in Raspberry Pi - Mini Project: Build & Apply

Displaying sensor readings on OLED

📖 Scenario: You have a Raspberry Pi connected to a temperature sensor and a small OLED screen. You want to show the current temperature on the OLED screen so you can easily see it without using a computer screen.

🎯 Goal: Build a simple Python program that reads a temperature value from a sensor variable and displays it on the OLED screen.

📋 What You'll Learn

Create a variable to hold the temperature reading.

Set up a variable for the OLED display width.

Write code to format the temperature reading as a string.

Display the formatted temperature string on the OLED screen.

💡 Why This Matters

🌍 Real World

Displaying sensor readings on small screens is common in home automation, weather stations, and portable devices.

💼 Career

Understanding how to handle sensor data and display it on hardware screens is useful for embedded systems and IoT developer roles.

1

Create the temperature reading variable

Create a variable called temperature_celsius and set it to the value 23.5 to represent the current temperature reading.

Raspberry Pi

# Create a variable called temperature_celsius and set it to 23.5
# Your code here

Hint

Use a simple assignment like temperature_celsius = 23.5.

2

Set up the OLED display width variable

Create a variable called oled_width and set it to 128 to represent the width of the OLED display in pixels.

Raspberry Pi

temperature_celsius = 23.5
# Create a variable called oled_width and set it to 128
# Your code here

Hint

Use oled_width = 128 to set the display width.

3

Format the temperature reading as a string

Create a variable called display_text that stores the temperature reading formatted as a string like "Temp: 23.5°C" using an f-string and the variable temperature_celsius.

Raspberry Pi

temperature_celsius = 23.5
oled_width = 128
# Create a variable called display_text with the value 'Temp: 23.5°C' using an f-string
# Your code here

Hint

Use an f-string like f"Temp: {temperature_celsius}°C" to create the display text.

4

Display the temperature on the OLED screen

Use print(display_text) to simulate displaying the temperature on the OLED screen by printing the formatted temperature string.

Raspberry Pi

temperature_celsius = 23.5
oled_width = 128
display_text = f"Temp: {temperature_celsius}°C"
# Print the display_text to simulate OLED output
# Your code here

Hint

Use print(display_text) to show the temperature.