This document provides instructions for assembling a bicycle cell phone charger. It is divided into sections for the mechanical system preparation, electrical system preparation, and assembling instructions. The mechanical system uses a rubber wheel, metal plate, and strips attached to the bike frame to power an alternator. The electrical system includes a PC board, voltage regulator, capacitor, wires and USB port wired according to a provided circuit diagram. The systems are assembled together, connecting the alternator wires to the electrical components, and securing the box containing the electrical system to the bike to allow charging a phone while cycling.

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, elevator 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