Can You Charge A Phone with Marbles?

Try Brilliant for FREE for 30 Days: https://brilliant.org/Engineezy (This will also get you 20% off the annual premium subscription) Check out the Engineezy merch featured in this video: https://engineezy.com/collections/merch I have a bunch of cool mechanical 3d print files available on my website: https://engineezy.com Or Become an Engineezy Thangs Member and get access to 2+ premium files every month: https://thangs.com/designer/engineezy The Wintergatan Holy Grail Divider Video:    • WE FOUND IT! - The Holy Grail Marble Divider   Tom Stanton’s Generator:    • Building a Generator   Here are a bunch of articles about different renewable energy storage systems in the works: https://spectrum.ieee.org/collections... My 3D Printers: Bambu Lab: https://tidd.ly/3Mye3xG Prusa: http://www.prusa3d.com/#a_aid=Engineezy This is the Laser Cutter I use for all my projects: https://www.xtool.com/?ref=rNX8YcbzlX... This is the filament I use for all my projects: https://geni.us/sdT9QBj I also have a Patreon if you want to see some exclusive behind the scenes content:   / engineezy   The electric screwdriver I used to assemble and disassemble this thing many times is a game changer: https://geni.us/f6oJ Can you harvest the energy of falling marbles to charge a phone? In this video, I take you through the incredibly complex engineering process required to answer this simple question. From converting a stepper motor into a working generator using a full bridge rectifier, to powering this generator with a marble-paddle wheel, to feeding the paddle wheel with hundreds of marbles- there were some interesting challenges I encountered along the way, and some satisfying solutions. This is probably the world's least efficient way to store energy, but it might be the most fun.