Yoonseo Cho
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Green Persona

Year
2025
Field
Physical Computing, HRI, Prototype
Context
6 weeks · 4-member team · Arduino, Rhino 3D, silicone casting, 3D printing

A multimodal interface conveying plant states through motion and light. Instead of text or numerical alerts, dual-servo leaf motion and RGB LED lighting give non-verbal feedback, reinterpreting plant care as an empathetic interaction between people and plants.

Smart planters usually communicate soil moisture and light through numbers or notifications, which can cause notification fatigue. I established the UX scenario guidelines, developed the prototyping mechanism and materials, and programmed the Arduino-based multimodal scenario mapping.

Mechanism prototyping
Mechanism prototyping
Internal assembly prototyping
Internal assembly prototyping

Nylon tension wires connected to servo motors create a tendon-driven mechanism that produces soft, organic movements such as trembling, bending, and swaying.

Silicone casting
Silicone casting
Compartment layout
Compartment layout
Final hardware assembly
Final hardware assembly
Movement inspiration
Movement inspiration
Live demonstration at the Open Prototyping Showcase
Live demonstration at the Open Prototyping Showcase

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