TU/e Master · course: A Designerly Perspective on IoT

Zestyme

A fruit you peel to release scent. How far you peel sets the strength and turning the coloured halves picks the aroma.

A hand lowers a soft lavender dropper into an orange sphere whose peel segments stand open.
Year
2026
Role
Group project, with X. C., N. H., N. A. M. & T. M. M.
Keywords
Interaction design, Rich interaction, Home IoT
Starting point

The course asked how a home IoT system can keep growing as devices and services are added while its interaction stays rich.

Concept

Fruit tells the hands what to do. Its form invites peeling, squeezing and rubbing, bodily skills as old as harvesting, and Zestyme builds every control on them.

Lens
Affordance

What an object's form offers the body to do, perceived directly without instructions (Gibson, 1979).

Rich interaction

Designing form, interaction and function together, as three inseparable properties of one product (Frens, 2006).

The orange diffuser beside the lavender dropper with green leaves, on a white table.
The diffuser and the dropper. In the concept, the dropper swells as stress rises and softens as you rub it.
How it works
  • Note 01 Peel to open: holes under the peel start the mist. Close the peel again for less scent.
  • Note 02 The light changes with the chosen aroma.
  • Note 03 Squeeze the dropper to pick up a scent and drop it into the diffuser. In the growing system, each new device keeps the same squeeze and rub.
Four strips of orange material on a green cutting mat.
Cutting the peel segments.
Hands fit a half-finished orange shell over electronics on the workbench.
Fitting the peel over the electronics.
The orange prototype on a cluttered workbench, wired to a microcontroller.
Open questions

The sphere gives no hint that it turns, so the aroma selection stays hidden. The dropper does not show whether it is active, raised or resting. Sharing the system between several people has no mechanism yet.

Next

A transparent shell, so people can read the state at a glance. The IoT layer, with data from wearables and intensity that adjusts over time, is still a concept.

References
  1. Frens, J. (2006). Designing for rich interaction: Integrating form, interaction, and function [Doctoral dissertation, Eindhoven University of Technology].
  2. Frens, J. (2017). Designing for embodied and rich interaction in home IoT. In Proceedings of the Conference on Design and Semantics of Form and Movement: Sense and Sensitivity (DeSForM 2017). InTech.
Previous
Carecast