Have you ever felt your Backpack shake too much and wanted to do something about it?Well now you can charge your phone by all those shakes!

Step 1: Parts

The required parts are-
1. Magnet wire
2. Plastic tubing and caps
3. Foam
4. USB power cable to device
5. Wire
6. 5 diodes
7. Magnets

Step 2: Coil

On the plastic tubing attach a piece of foam,and then start coiling the magnet wire.Remember to coil in only one direction,after coiling a length of 3-4 cm bring the wire back to he start and continue coiling. Do not coil backwards.Coil to a depth of 1 cm. Depending on your choice make 2-3 coils.Attach foam on both sides of the magnet.Place the magnet in the coil tube and seal the tube so that the magnet does not come out.

Step 3: Charger Link

Now cut the charger wire and skin the 2 wires inside.The red wire is positive while the black/white is negative.

Step 4: Rectifier

To make the rectifier follow the schematic. Preferably solder the diodes to make the connection.

Step 5: Connections

Test the polarity of the coils using a voltmeter.Now connect the coils such that the positive terminal of the first connects with the negative terminal of the second and etc.Attach the starting and end terminals to the rectifier as shown. Take the output wires of the rectifier and connect it charger.