Making life better with Technology
|
|
|
|
|
|
|
August 2008:
For my senior capstone project, I designed an automatic transmission
for a pedal bicycle. A monster servo is mounted in the rear derailleur,
replacing the current cable system. An encoder wheel was placed on the front
sprocket so the user’s pedal speed can be measured using an infrared
reflectivity sensor.
Depended on the rider’s pedal speed and rider-adjusted thresholds, the
bike shifts accordingly.
The
brain behind the bike is a Basic Stamp. A 2x16 character LCD and a few buttons
were installed so a user interface could be implemented.
November 2008 -
I started working on an updated design for the bike. It included a faster microcontroller and mechanical encoder to replace the optical one.
|
|
|
|
|
|
|
|
|
|
|
