This document provides instructions for assembling a bicycle cell phone charger. It is divided into preparation and assembly of the mechanical and electrical systems. The mechanical system uses a rubber wheel, metal plate, and strips along with an alternator and screws to generate electricity from pedaling. The electrical system includes a PC board, voltage regulator, capacitor, wires, USB port, diodes and box that regulate and deliver power to a phone. The systems are connected by soldering input wires from the alternator to output wires on the electrical box, allowing a phone to charge while bicycling.

1. Bicycle Cell Phone
Charger Tutorial
ENGR 103-91 Group 02

2. Preparation(Mechanical System)
Rubber Wheel Metal Plate Metal Strip
Alternator Washer Screw U bolt

3. Preparation(Electrical System)
PC Board Voltage Regulator Capacitor Wires
USB Port Diodes Box

4. Assembling(Mechanical System)
1. Assemble wheel and metal
plate using screws and
washers
2. Attach alternator to the
wheel-plate assembly from
step 1 by epoxy

5. Assembling(Mechanical System)
3. Drill holes on metal strips on
proper places (depends on
bike) and attach them on
bike frame in the back by
U bolts. Use washers to
adjust the placement to
ensure parallel with the bike.

6. Assembling(Mechanical System)
4. Assemble alternator and
rubber wheel with strips by
screws.
5. Adjust the entire placement
to ensure the wheel is in
position all the time.

7. Assembling(Electrical System)
6. Solder electronic components
to the PC board and connect
them by wires according to
the circuit diagram on next
slide.

8. Circuit Diagram

9. Assembling(Electrical System)
7. Attach the PC board to top of
the box using screws. If the
box is metal, elevate the
PC board in case of short cut
by adjusting nuts.

10. Assembling
8. Connect the input wires of the electrical
system to the output wires of alternator by
soldering.
9. Attach the box wherever you like on the
bike!
10. Now you can charge your phone while
biking!

11. Pictures References
● Rubber Wheel
● Metal Plate
● Metal Strip
● Alternator
● Washer
● Screw
● U-bolt

12. Pictures References
● PC Board
● Voltage Regulator
● Capacitor
● Wires
● USB Port
● Diodes
● Box