"World's smallest and world's biggest are two phrases that never fail to grab attention, especially when they're attached to something as utilitarian as a flashlight. This fingertip-sized rechargeable torch does exactly that, not by chasing gimmicks, but by pushing miniaturization to an almost obsessive extreme. Built as a DIY experiment by YouTube channel Gadget Industry, the flashlight shrinks a fully functional, rechargeable light source into a form factor so small it's easy to forget it's even there, until the moment you need it."
"At first glance, the scale alone feels unreal. The flashlight can sit comfortably on the tip of a finger, yet it houses a lithium-polymer battery, a charging circuit, a touch-based control system, and a white LED, all sealed into a compact resin shell. It's a reminder that innovation doesn't always come from adding more features, but from stripping everything down to what's essential."
"The build begins with a tiny 60mAh lithium-polymer battery, chosen specifically for its balance between capacity and size. To make charging possible without inflating the footprint, the maker disassembles a TP4056 USB-C charging board and integrates only the necessary components directly into the layout. A touch sensor replaces a traditional mechanical switch, working through an N-channel MOSFET to control the LED. The result is a simple, intuitive interaction: place your finger over the sensor and the light turns on, remove it and it shuts off."
A fingertip-sized rechargeable torch compresses a fully functional light source into an almost vanishing form factor. The device houses a 60mAh lithium-polymer battery, an integrated USB-C charging circuit derived from a disassembled TP4056 board, a touch sensor driving an N-channel MOSFET, and a white LED. The touch-based control eliminates mechanical switches and moving parts, enabling simple on-off operation by touching the sensor. A hardened resin shell protects internals and allows shaping and sanding into an organic pebble-like shape. The design prioritizes presence, accessibility, and robustness over extreme brightness or numerous features.
Read at Yanko Design - Modern Industrial Design News
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