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What are the key components of an HMI that is easy to use?

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Human-machine interfaces (HMI) are the devices and software that allow users to interact with machines, systems, and processes. A well-designed HMI can improve user experience, productivity, safety, and performance. But what are the key components of an HMI that is easy to use? In this article, we will explore some of the essential elements of user-friendly HMI design.

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Bassem Dghaidi

Senior Software Engineer @GitHub | Software Engineering, System Design & Career

1 Understand the user

The first step in designing an easy-to-use HMI is to understand who the user is, what their goals are, and what their context is. This means conducting user research, creating personas, scenarios, and use cases, and defining user requirements and expectations. By understanding the user, you can design an HMI that meets their needs, preferences, and abilities.

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Bassem Dghaidi

Senior Software Engineer @GitHub | Software Engineering, System Design & Career
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One of the biggest mistakes that I see repeated time and time again is designing for what we want the user to do vs. designing for what the user will actually do. Every interface has a path of least resistance that users will generally follow, we should work to identify that path and design for it. If while designing the interface you're thinking: people will do X but I want them to do Y and you focus on building Y, that's when you're setting yourself up for failure. Designing usable interfaces should be an exploration, not: 1. Blindly following hollow standards 2. Optimising for novelty instead of reusing what works 3. Optimising for aesthetics at the expense of function 4. Forcing users down an unintuitive path

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Abdullah A.

Software Frontend Developer | Expert in Modern Web Technologies | Building Scalable, User-Friendly Applications | Open to Remote Work
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In the realm of HMI design, the first brushstroke is understanding the user canvas. ???? Through research, personas, and scenarios, we decipher goals and expectations, paving the way for an interface tailored to their needs. ???

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2 Simplify the interface

The second component of an easy-to-use HMI is to simplify the interface and reduce the cognitive load on the user. This means eliminating unnecessary features, functions, and information, and focusing on the essential tasks and actions. You can simplify the interface by using clear and consistent labels, icons, and colors, organizing the layout and navigation logically and intuitively, and providing feedback and guidance to the user.

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Bassem Dghaidi

Senior Software Engineer @GitHub | Software Engineering, System Design & Career
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Simplifying the interface is easier said than done. Following a set of recommendations or standards doesn't necessarily lead to a simple interface. Creating easy to use HMIs is an optimisation problem. The desired outcome (simple interface) is reached by a repeating: trial, feedback, refinment cycle. Eliminating unecessary features is a step in the right direction, but it's also raises the question: "how do we identify what is essential and what isn't?"

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Abdullah A.

Software Frontend Developer | Expert in Modern Web Technologies | Building Scalable, User-Friendly Applications | Open to Remote Work
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In the art of HMI design, simplicity is the masterpiece. ??? Trim the unnecessary, embrace clarity in labels and layout, and guide the user seamlessly. A simplified interface is a user-friendly canvas. ??????

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3 Apply design principles

When designing an easy-to-use HMI, it is important to apply design principles that enhance the usability, aesthetics, and accessibility of the interface. Visibility is key - make sure the important elements of the interface are visible and easy to find. Affordance should also be considered, as elements should indicate how they can be used and interacted with. Consistency is also essential; make sure the elements of the interface follow the same rules and conventions throughout the interface. Furthermore, constraints should be applied to limit user's actions and choices to prevent errors and confusion. Lastly, mapping should be implemented to ensure that elements of the interface correspond to real-world objects and actions they represent.

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Abdullah A.

Software Frontend Developer | Expert in Modern Web Technologies | Building Scalable, User-Friendly Applications | Open to Remote Work
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In the realm of HMI design, principles shape the user experience. ??? Visibility, affordance, consistency, constraints, and mapping—each a brushstroke contributing to an interface that's not just usable but a joy to interact with. ????

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4 Test and evaluate

The fourth component of an easy-to-use HMI is to test and evaluate the interface with real users and in real situations. This means conducting usability testing, user feedback, and user satisfaction surveys, and measuring key performance indicators such as efficiency, effectiveness, and error rate. By testing and evaluating the interface, you can identify and fix any usability issues, errors, or gaps, and improve the user experience and satisfaction.

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5 Keep up with trends

The fifth component of an easy-to-use HMI is to stay up-to-date with the latest trends and innovations in HMI design and technology. This means keeping tabs on new developments, tools, and methods that can improve the functionality, interactivity, and intelligence of the interface. For example, voice and gesture control allows users to interact with the interface using natural language and body movements. Augmented and virtual reality provides a more immersive and realistic experience that enhances the perception and understanding of the interface. Additionally, artificial intelligence and machine learning enables the interface to learn from user behavior and preferences to offer personalized and adaptive solutions.

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6 Follow standards and guidelines

The sixth component of an easy-to-use HMI is to follow standards and guidelines that are applicable to the interface, such as industry standards, regulatory standards, and user standards. This means complying with the legal, ethical, and technical requirements and best practices that govern the design, development, and deployment of the interface. Such standards and guidelines help ensure that the interface meets the expectations of users and customers while also adhering to industry norms and regulatory rules.

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7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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What are the key components of an HMI that is easy to use?

1

2

3

4

5

6

7

1 Understand the user

2 Simplify the interface

3 Apply design principles

4 Test and evaluate

5 Keep up with trends

6 Follow standards and guidelines

7 Here’s what else to consider

Software Design

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What are the key components of an HMI that is easy to use?

1

2

3

4

5

6

7

1 Understand the user

2 Simplify the interface

3 Apply design principles

4 Test and evaluate

5 Keep up with trends

6 Follow standards and guidelines

7 Here’s what else to consider

Software Design

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