Picture of Cell phone charger
Charge your phone while walking with this pendulum powered charger. Your walking motion charges your phone. I will add the power control circuit later if i have time. It is a simple LM chip and cap layout to condition the power. more on that later.

Step 1: Loppy

Picture of Loppy
Here is the rear case of the charger all from abs plastic 3d printed the belt loop to strap it to your hip or to your arm or leg.
BobcBobc1 month ago
alcurb4 months ago

Has your project ever got built? Seems like a good idea, but in practicality, I'm not so sure how it would work. The hub and torus are one solid iron or steel, correct? Would that design increase or reduce efficiency of the generator coils? Maybe a schematic would help immensely to understand the design and reproduce it.

kelseymh2 years ago
This is all renderings. Do you have a working version? If so, it would be awesome if you including actual photographs of the components, and a demonstration of its successful functioning.
sparten11 (author)  kelseymh2 years ago
This is for contest to wun 3d printer once i get that i will build.
Ah! Thank you for that explanation. Now I understand why it's purely rendered. It looks like a reasonably simple design, which ought to function.

What I don't quite see is how you get the current out of the system. You've got the stators all wound around a monolithic piece of metal. How do you separate the current source/voltage from ground in order to supply power to the device you want to charge?
sparten11 (author)  kelseymh2 years ago
Well the iron will be incased inside the plastic the control circuit i will post once i get it done.
That is awesome.