This technical information has been contributed by
Proto Labs

Wearable Device that Turns Body Movement into Smartphone Charge Wins Cool Idea! Award

Ampy is a compact device that can be strapped to a person's arm, leg or hip, or carried inside a backpack or messenger's bag, where it charges anytime movement is detected.
Business Wire photo courtesy of Proto Labs.

AMPY captures and converts kinetic energy into power to charge mobile phones.

MAPLE PLAIN, Minn.—The creators of a wearable kinetic device that charges smartphones have been presented with the Proto Labs Cool Idea! Award. The new device, called AMPY, lets users discreetly capture and convert their daily physical activity into charging power for their smartphones.

“Wearable devices are playing an increasingly more important role in daily life,” said Proto Labs founder, Larry Lukis, in a press release. “AMPY embodies the spirit of the wearable segment with its effortless user integration, but simultaneously offers an environmentally friendly kinetic alternative to wall chargers.”

The compact device can be strapped to person's arm, leg or hip, or carried inside a backpack or messenger's bag, where it charges anytime movement is detected. A user can then plug their smartphone into AMPY to restore the phone's battery life.

“A typical day of walking — about 8,000 to 10,000 steps — gives you another three hours of smartphone battery life, and if you add another 30-minute workout that day, you'd get around 6 additional hours,” said Tejas Shastry, CEO of the Chicago-based startup, in the release.

At the heart of the device is its linear inductor. “We developed all of the proprietary architecture for the internal conductor inside AMPY,” explains the company's technical head, Mike Geier. “It's an area that we had to invest significant prototyping hours towards and equipment to create. The result is a product completely unique to the wearable space.”

Shastry, Geier, and fellow co-founder, Alex Smith, are all Ph.D. Candidates in engineering at Northwestern University in Evanston, Illinois. Through the help of two accelerator programs, along with their recent Proto Labs service grant, they've begun testing the device within an initial demographic of young, active urbanites, and have launched a crowdfunding campaign on Kickstarter.

The Cool Idea! Award provided the team with the tooling and subsequent low-volume injection molded production run for the plastic AMPY clip and housings. The parts will be used in devices shipped for pilot testing, as well as upper-level crowdfunding perks for contributors. Shastry says they hope to follow the campaign with an early 2015 full-market release online.

Since 2011, the Cool Idea! Award ( has provided more than $750,000 in Proto Labs prototyping and short-run production services to entrepreneurs developing new products in the United States and Europe. Unlike other product awards that recognize products after they're in mass production and on store shelves, the Cool Idea! Award is meant to help innovative ideas come to life.

Proto Labs is an online and technology-enabled rapid manufacturer of custom parts for prototyping and low- to mid-volume production. The company uses quick-turn injection molding, CNC machining, and additive manufacturing processes to produce parts within days for product designers and engineers worldwide.

This technical information has been contributed by
Proto Labs

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