LEDs in an Engagement Ring

ring

Ben's engagement ring is awesome not only because it lights up, but because it lights up when he and his girlfriend hold hands:

Putting a battery of capacitor inside a ring is nigh impossible, so [Ben] decided to power the LEDs with an inductive charging circuit. A coil of wire wound around kapton tape serves as the inductor and a small SMD capacitor powers three very bright and very tiny LEDs.

The inductive charging unit itself is a masterpiece of hackery; [Ben] wanted the ring to light up whenever he and his ladyfriend were holding hands. To do this, [Ben]‘s inductive charger is also a wearable device: a large coil of wire is the charger’s transformer and was would to fit around [Ben]‘s wrist. The entire charging circuit can be easily hidden under a jacket sleeve, making for a nearly magical light-up ring.

You can watch a video of the ring at the link.

Link


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Check out Twaggies' very funny clip:

Give a Man a Fish - Twaggies by Twaggies
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