How to Use the `pinout` Command (with Examples)

The pinout command is a useful tool for Raspberry Pi users who need to quickly access detailed information about the GPIO (General Purpose Input/Output) pins on their Raspberry Pi models. This command provides a simple and effective way to view a graphical representation of the pin layout directly in the terminal. Additionally, it offers the option to open the pinout details in a web browser for more interactive exploration. The pinout command is invaluable for hobbyists, developers, and engineers who frequently work with Raspberry Pi boards, assisting them in interfacing with various peripherals and electronic components.

Use case 1: Viewing the Pinout Information and GPIO Header Diagram for the Current Raspberry Pi

Code:

pinout

Motivation:

When working with Raspberry Pi for electronic projects, it is crucial to know the pin configuration of the GPIO header. This information is essential when connecting various modules like sensors, displays, or communication devices to ensure the correct pins are used. The pinout command provides a visual representation of the GPIO pins, which helps users understand the layout without needing to consult external diagrams or schematics. This on-the-fly access to pin information streamlines the process of prototyping and debugging hardware connections, saving time and reducing errors.

Explanation:

The pinout command, when executed without any additional arguments, retrieves and displays an ASCII diagram representing the pin configuration of the connected Raspberry Pi model. It extracts details directly from the system hardware, ensuring that the information is accurate and specific to the exact model in use. It accommodates the variations in pin layout across different Raspberry Pi models by automatically detecting the current hardware configuration.

Example Output:

+-----+-----+---------+------+---+---Pi 4---+---+------+---------+-----+-----+
| BCM | wPi |   Name  | Mode | V | Physical | V | Mode | Name    | wPi | BCM |
+-----+-----+---------+------+---+----++----+---+------+---------+-----+-----+
|     |     |    3.3V |      |   |  1 || 2  |   |      | 5V      |     |     |
|   2 |   8 |   SDA.1 | ALT0 | 1 |  3 || 4  |   |      | 5V      |     |     |
|   3 |   9 |   SCL.1 | ALT0 | 1 |  5 || 6  |   |      | 0V      |     |     |
...
+-----+-----+---------+------+---+---Pi 4---+---+------+---------+-----+-----+

Use case 2: Opening the Pinout Information at https://pinout.xyz/ in the Default Browser

Code:

pinout -x

Motivation:

While the terminal-based ASCII diagram provided by the pinout command is handy, there are instances where users might prefer a more interactive and detailed view of the Raspberry Pi’s GPIO pinout. The website https://pinout.xyz/ offers a comprehensive and visually appealing interface that includes additional context, potential uses, and pin descriptions. By using the -x argument with the pinout command, users can quickly navigate to this resource, enhancing their understanding with supplementary information about pin functions, related projects, and community feedback. This feature is particularly helpful for newcomers to Raspberry Pi or those dealing with complex projects.

Explanation:

The -x argument is an option provided by the pinout command that triggers the default web browser to open directly to the Pinout.xyz website. Upon execution, it constructs and launches a URL based on the Raspberry Pi model detected, ensuring that users land on a page that accurately reflects their specific hardware configuration. No additional system interaction is needed, making this a quick and effortless way to access detailed GPIO information.

Example Output:

Upon executing the command, the user’s default web browser will open and display the relevant GPIO pin details on the Pinout.xyz website. Users will see a rich graphical interface showing images and descriptions related to their particular Raspberry Pi model.

Conclusion:

In summary, the pinout command is a powerful and user-friendly tool for Raspberry Pi enthusiasts aiming to manage and utilize GPIO pins effectively. Whether using the direct terminal output for a quick reference or leveraging the web interface for enhanced detail and interaction, pinout facilitates smoother and more efficient hardware development. Its seamless integration with the current system and the automatic detection of Raspberry Pi models ensures that all users, from novices to experts, can confidently connect and expand their Raspberry Pi projects.