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
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.
Step 2: Power band
Here you wind the coils around the cutouts. When the magnets on the pendulum pass over the coils they produce a voltage. Once we collect and condition the power we send it back to the phone. This part is also going to be printed. I may have to build from steal though will see I maybe able to incorporate the steel core if needed into the printed part.
Step 3: Pendulum Swings
This is the pendulum it holds the neodymium magnets that will pass over the coil to produce the power. Notice the holes cut at the outer diameter of the weight. this part will be made of steel. or copper. have not decided yet. but needs to be heavy to keep the momentum going when the magnetic drag tries to slow it down.
below are the magnets.
Step 4: Round and round she goes.
the layout is simple the penutulum rotates and passes over the coils and produce power, the pentulum has a bearing in the center to help with a smooth ride.