Скачать или смотреть How to Create a Flexible Button Press System with Python and Arduino

Discover a solution to allow any button press to trigger your code's actions in Python and Arduino. Learn how to implement a wait function that responds to either button being pressed.
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This video is based on the question https://stackoverflow.com/q/63266558/ asked by the user 'strilz' ( https://stackoverflow.com/u/14051652/ ) and on the answer https://stackoverflow.com/a/63266658/ provided by the user 'David Duran' ( https://stackoverflow.com/u/2726773/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Create a Flexible Button Press System with Python and Arduino

In the world of programming with Python and Arduino, particularly when dealing with user inputs via buttons, one common problem arises: how can we allow multiple buttons to trigger functions without enforcing a strict order? This is especially relevant when dealing with user interfaces where the order of operations should be as user-friendly as possible.

Understanding the Problem

Consider the initial setup in your code:

[[See Video to Reveal this Text or Code Snippet]]

In this snippet, you find yourself constrained by a sequence of button presses. The structure requires that push_button1 must be pressed before push_button2 can be recognized. This strict sequence is not ideal for user interactions, which may lead to a confusing user experience.

The Objective

The goal is to modify this approach so that either button, when pressed, can trigger the desired outputs, regardless of the order in which they are pressed. This change aims to enhance usability, making your application more intuitive.

The Solution

To achieve the flexible button press system, you can create a new function that waits for either button to be pressed. Let's break this down step by step:

New Function Definition

You can define a new function called wait_for_buttons, which will handle the button presses without requiring sequence constraints.

[[See Video to Reveal this Text or Code Snippet]]

How It Works

Initialization:

Two variables, button1_pressed and button2_pressed, are set to False. These track whether each button has been pressed.

While Loop:

The loop continues to run as long as button2 is not pressed. This allows the system to keep checking for both buttons.

Button Read Check:

Inside the loop, the function continuously checks if button1 is pressed. If so, it:

Marks button1_pressed as True.

Prints "Hi" to indicate that the first button was acknowledged.

It then checks if button2 is pressed. If so, it:

Marks button2_pressed as True, which will cause the loop to terminate after printing "Bye".

The Final Output

With this new structure, regardless of which button the user presses first, the application will respond appropriately. If push_button1 is pressed, it will print "Hi" and keep waiting for push_button2. Conversely, pressing push_button2 will end the waiting state and print "Bye".

Conclusion

Implementing a flexible button handling system in Python with Arduino creates a more interactive experience for users. This adjustment not only maintains functionality but also enhances usability by allowing users to engage with the system in an order that feels natural to them.

Feel free to integrate this solution into your projects, and enjoy creating smoother interactions for your users!