Tkinter GUI for sensor dashboard in Raspberry Pi - Mini Project: Build & Apply

Tkinter GUI for Sensor Dashboard

📖 Scenario: You are building a simple dashboard on a Raspberry Pi to show live sensor readings. The dashboard will display temperature and humidity values in a window using Tkinter. This helps you monitor your environment easily.

🎯 Goal: Create a Tkinter window that shows temperature and humidity sensor values as labels. Update the display with new readings.

📋 What You'll Learn

Create a Tkinter window with a title

Add labels to show temperature and humidity

Use variables to hold sensor values

Update the labels with new sensor data

Print the updated values in the console

💡 Why This Matters

🌍 Real World

This project simulates a simple sensor dashboard you might build on a Raspberry Pi to monitor environmental data in real time.

💼 Career

Understanding Tkinter GUI basics is useful for creating user interfaces for IoT devices, embedded systems, and desktop applications.

1

Create the Tkinter window and sensor data variables

Import tkinter as tk. Create a Tkinter window called root with the title 'Sensor Dashboard'. Create two variables: temperature set to 22.5 and humidity set to 45.

Raspberry Pi

import tkinter as tk

# Create the main window and sensor variables
# Your code here

Hint

Use tk.Tk() to create the window and root.title() to set the title.

2

Add labels to display temperature and humidity

Create two Tkinter Label widgets named temp_label and hum_label. Set their text to show Temperature: 22.5 °C and Humidity: 45 % respectively. Pack both labels into the window.

Raspberry Pi

import tkinter as tk

root = tk.Tk()
root.title('Sensor Dashboard')
temperature = 22.5
humidity = 45

# Create labels for temperature and humidity
# Your code here

Hint

Use tk.Label with text= and call pack() to add labels to the window.

3

Update sensor values and refresh labels

Change the temperature variable to 23.0 and humidity to 50. Update the text of temp_label and hum_label to show the new values using the config() method.

Raspberry Pi

import tkinter as tk

root = tk.Tk()
root.title('Sensor Dashboard')
temperature = 22.5
humidity = 45

temp_label = tk.Label(root, text=f'Temperature: {temperature} °C')
temp_label.pack()
hum_label = tk.Label(root, text=f'Humidity: {humidity} %')
hum_label.pack()

# Update sensor values and refresh labels
# Your code here

Hint

Assign new values to variables and use label.config(text=...) to update label text.

4

Print updated sensor values and run the Tkinter main loop

Print the updated temperature and humidity values in the format Temperature: 23.0 °C and Humidity: 50 %. Then start the Tkinter event loop by calling root.mainloop().

Raspberry Pi

import tkinter as tk

root = tk.Tk()
root.title('Sensor Dashboard')
temperature = 22.5
humidity = 45

temp_label = tk.Label(root, text=f'Temperature: {temperature} °C')
temp_label.pack()
hum_label = tk.Label(root, text=f'Humidity: {humidity} %')
hum_label.pack()

temperature = 23.0
humidity = 50

temp_label.config(text=f'Temperature: {temperature} °C')
hum_label.config(text=f'Humidity: {humidity} %')

# Print updated values and start the GUI loop
# Your code here

Hint

Use print() to show values and root.mainloop() to run the window.