This time i am here with a simple but useful bicycle mobile charger .
You charge any of your cell phone while cycling and all this you can easily make at home.
It's not so expensive but don't i think the whole setup will cost you around 20 - 30 dollars.
If you are not familiar with electronics you can give the circuit i gave to a electrician and some mechanics part to your local workshop it's a matter of minutes for them. But as far as i think
This is a simple electronics and mechanics project .It uses a AC motor to produce ac current and then the power is supplied to the power HUB and then it's converted to 5 volts DC .