A digital worry bead

Kombolói began as a quick sketch for an intimate, personable device. The starting point was the familiar gesture of holding worry beads or prayer beads in the palm, then asking what an activated digital or electronic version might look like, what it might do, and what it might make someone feel.

The device was imagined as something that could capture and diffuse anxiety. A unique capacitive touch sensor would link the person’s tension to the object, harnessing that energy and turning it into light before diffusing it into something more soothing. The project came from an idea on a plane and from seeing similar objects in people’s hands over several months.

The motivation also connected to a conversation with Linda Stone at DLD08 in Munich and to her research into Continuous Partial Attention and the physical effects of anxious states around activities such as opening email. Kombolói offered a small physical response to that condition: an object that could be held, touched, moved, and spent time with.

Touch, motion, and time

The project belongs to a continuing exploration of Touch, Motion, and Time as the basis for interactive experiences. These are elemental forms of human experience that digital interactions can overlook even though they shape how people sense and make meaning.

Touch is present in the way the device sits in the hand and invites a thumb to run along its surface. Motion is the rolling and moving of the object through the palm. Time is the duration of staying with it, slowing down, focusing, and gradually relaxing rather than moving through an immediate digital interaction.

Kombolói was one variation of a template component developed to explore those elements through made objects. The device gave the question a social and physical form: how might a small object carry a soothing ritual while also recording an experiment in interactive hardware?

Form studies and the effort of making

The first form was a small, thumb-sized transparent model made to test the object in the hand. People generally felt that the early shape was right. The modeling process was deliberately quick and imperfect, and later revisions exposed the tension between a smooth, informal exterior and the engineering required inside it.

The second white plastic version introduced mountings, slots, clips, and other internal provisions. Those improvements made room for the electronics while breaking some of the external features and creating hard points that worked against the intended softness of the form. The project records that friction as part of the work: sketching, revolving, cutting, extruding, revising tangents, and learning to develop each feature through several patient steps.

The design process also moved the same electrical schematics through physical changes. Components were moved around the printed circuit board to compress the design, alternative parts were sourced, and small fabrication techniques were learned along the way. Circuits and board layouts were quickly redone during travel, bringing the form toward a narrow geometry with one long axis.

Circuit, light, and embedded hardware

The electronics included an ATMega microcontroller and a compact printed circuit board. Programming the microcontroller without giving up too much board area was an unresolved constraint. The FT232RL chip, used for USB-to-serial conversion, was left off the board because its footprint was too large for the form.

The alternative was a small external FTDI breakout board with a smaller version of the chip and a mini USB connector. A few wires could connect that board to the main device, with a mounting bushing or slot holding it off to the side. This arrangement kept the board narrow while preserving a practical route for programming and communication.

Illumination was equally important and difficult. The translucent body was hard to light brightly without shadows from the internal parts. The project considered a reflective interior, a light guide running along the long axis, and two LEDs facing each other so that one guide could connect both ends. The intended effect was a body that glowed evenly enough to turn tension into a calmer visual experience.

The circuit also showed the ordinary problems that appear when an idea becomes a device. It seemed to drain the battery even when switched off. One proposed power arrangement would shut down the main logic rail while keeping the regulator output connected to the real-time clock’s backup input, allowing the clock to retain time. The problem remained part of the documented project rather than being hidden behind the concept.

Semaphore communication

The project also considered a compact way for the device to communicate with a data network. A color-based semaphore system could use the built-in camera on a computer to read a sequence of colors representing the device’s state. A simple Processing sketch could interpret that sequence.

This channel would carry less robust information than the existing USB firmware, while reducing the need for USB hardware. The idea was discussed alongside Veronica Perdes’s Fugitive Object class project, where a small object could communicate back to a larger system or “mothership.”

A theory object in the hand

Kombolói treats a technical object as a place where a question can be held. The device joins a capacitive sensor, microcontroller, LEDs, board layout, plastic form, battery, and communication channel to a ritual of touch and duration.

Its meaning sits in that crossing. The project asks how an interactive device might sense a person’s tension, turn that contact into light, and give the person a physical action that takes time. It also shows the work required to move from a quick sketch to something that can be modeled, wired, soldered, programmed, illuminated, held, and revised.

The result is a theory object and a conversation piece: a small device that speaks about anxiety through its behavior, its material constraints, and the effort of making it.

Kombolói prototype opened to show the printed circuit board, wiring, and battery components.

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