Link to video : https://drive.google.com/file/d/1wrsx0LpX8-KULwrtQ7UhdwTtWr0vSpkc/view?usp=sharing
To evaluate the user experience of ExpressNotes, I conducted testing sessions where participants interacted with the system without receiving any instructions or guidance. The goal was to observe how intuitive the system is and identify any points of confusion. Users were introduced to the setup with the Arduino buttons, potentiometer, and the connected P5.js visual interface on a laptop. Most users hesitated at the beginning, unsure of how to begin the interaction, with the “Connect to Arduino” button being overlooked by several participants.
Once the connection was established and users began pressing buttons, they quickly recognized that each button triggered a unique piano note along with a visual effect on the screen. This immediate feedback created a sense of play and curiosity, and users began experimenting more confidently. The relationship between physical input and audiovisual output was generally clear, although the specific mappings between notes and visuals were not always understood without further exploration or explanation.
The potentiometer was another area where users expressed confusion. While some participants guessed that it controlled volume, others assumed it affected brightness or visual intensity. The lack of on-screen feedback for the potentiometer made its purpose harder to identify. Adding a visual indicator—such as a dynamic volume bar—could significantly improve clarity and reinforce the connection between the physical control and the system’s response.
One common suggestion from users was to enhance the physical design of the interface. Several participants mentioned that the Arduino board and buttons looked too technical or unfinished. They recommended covering the board with a piano-style overlay so the buttons resemble piano keys. This would not only make the device more visually appealing but also give immediate context to new users, helping them understand that the interaction is musically driven.
ExpressNotes was well received as an interactive and expressive experience. Users enjoyed the audio-visual feedback and were intrigued by how the visual patterns changed with each note. However, clearer onboarding, labels for controls, a visual volume indicator, and improved hardware presentation would help users engage more quickly and confidently. These observations will guide improvements to make the project more accessible, intuitive, and enjoyable for first-time users.