Making the Guitar More Accessible” is a self-directed interactive project designed to help musical beginners experiment with chords without prior theory knowledge. Created in DES 334C at UT Austin over three weeks, it combines a custom-built 5-slider MIDI controller with a p5.js digital interface. Inspired by the intuitive layout of the piano, the project reimagines the guitar as a more approachable instrument. Through multiple iterations—including a failed 72-button fretboard concept and a MIDI piano prototype—the final design emerged: a laser-cut chipboard housing with Arduino-wired sliders that transmit data to a browser-based tool. Users can build chords by adjusting sliders, view fingering options on a digital fretboard, and access chord names via an integrated chord-finder link. User feedback led to improvements like optional note sorting, and the final interface was styled with a hand-drawn aesthetic to bridge analog and digital experiences. This project strengthened my skills in physical computing, interface design, and iterative prototyping, and gave me experience troubleshooting Arduino limitations and implementing serial communication between hardware and software. It stands as a playful, tactile learning tool that encourages creative exploration in music.