3D Print Your Own Seiko-Style “Magic Lever” Energy Harvester

Back in 1956, Seiko created their “magic lever” as an integral part of self-winding mechanical watches, which were essentially mechanical energy harvesters. The magic lever is a type of ratcheting …read more Continue reading 3D Print Your Own Seiko-Style “Magic Lever” Energy Harvester

Magic Pyramids Blink Eternal with the Power of the Sun

Without knowing it, we’ve spent years watching [Jasper Sikken] piece together an empire of energy harvesting equipment, and now he’s putting the pieces together into wonderful creations. His recently finished …read more Continue reading Magic Pyramids Blink Eternal with the Power of the Sun

Human-Powered Laser Gun Makes Battery-Free Target Practice

[Dirk] shared a fascinating project of his that consists of several different parts coming together in a satisfying whole. It’s all about wanting to do target practice, indoors, using a simple red laser dot instead of any sort of projectile. While it’s possible to practice by flashing a red laser …read more

Continue reading Human-Powered Laser Gun Makes Battery-Free Target Practice