Wonderclip — smart wardrobe tracking clip concept
Smart Product Design Project · IDE Year 1 2024
WONDER
CLIP
Electronics Sustainability IoT Product-Service
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Project Brief

Project Brief

The Wonderclip helps users rediscover their wardrobe by tracking which garments go unworn for too long. A clip is attached to each piece of clothing. A colour-shifting LED gradually turns red the longer a garment sits untouched. A companion app links clips to a digital wardrobe and generates outfit suggestions from the clothes you use least, reducing the need to buy new clothing.

Cordless Wonderclip

Cliphub prototype mounted on board; Wonderclip attached to an orange hoodie via retractable wire
Physical Prototype

Wireless Clip

The Cliphub mounts to the back wall of a wardrobe and gathers data from each Wonderclip through a retractable cable. When a clip is taken off from a piece of clothing, the clip's timer is reset, and data is sent to the app. No button is required. The cliphub thus eliminates the need for individual batteries, data transmitters, and buttons, and centralizes these components. This increases sustainability and reduces cost.

Full functional prototype setup.
Cliphub

Cliphub

The functional prototype shows roughly how the product will work. The user can press the button of the clip to start or reset the timer. The LED on the clip automatically goes from green to red when the timer is started. How fast the LED turns red can be determined by the user in the app. The user can link clips to clothing pieces, to keep track of how long clothing pieces have been unworn in a mobile app.

Functional Prototype

Cliphub Concept

3D printed cliphub
Physical Prototyping

Cliphub

By centralising the battery, processor, and Bluetooth transmitter in the Cliphub base station, the per-unit manufacturing cost of each Wonderclip dropped 36%: from 70 cents to 0.45 cents. Fewer electronic components also means less e-waste at end of life. The automatic retraction mechanism keeps cables tidy and prevents clips from being lost.

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Key Highlights

What went well?

36% Cost Reduction Moving power, processing, and Bluetooth to the shared Cliphub reduced per-clip BOM cost from €0.70 to €0.45, unlocking a broader target market.
Frictionless Interaction Replacing the manual start/stop button with a motion sensor in the retractable pulley means the timer activates and resets passively during normal wardrobe use.
Passive Sustainability By surfacing forgotten garments through colour feedback and AI-generated outfit suggestions, Wonderclip reduces the urge to buy new clothes without lecturing the user.
Shared Electronics Architecture One Cliphub powers all clips via a retractable cable, consolidating batteries, processor, and BT transmitter — reducing e-waste per household significantly.
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Points of Improvement

What could be better?

Limited Cable Reach The retractable cable constrains how far a Wonderclip can extend from the Cliphub, potentially limiting use in larger wardrobes or walk-in closets.
App Dependency Outfit generation and digital wardrobe linking require a companion app, adding onboarding friction that could reduce adoption among less tech-savvy users.
Prototype Fidelity The physical prototype relies on exposed wiring and off-the-shelf modules; translating this to a production-ready miniaturised PCB was outside the project scope.