Hello!

The purpose of this blog is to chronicle the planning, execution, testing, and refinement of a low-cost, automatic bicycle transmission system. The system is being developed as a course project for the Spring 2014 offering of Mechanical Engineering 102B at UC Berkeley (a.k.a. Mechatronics).

The mechatronic system has been approved by Professor Homayoon Kazerooni and is now in the planning stages.

The partial parts list (will be updated as project goes along):

The full parts list can be found in the documentation.
LAST UPDATED [05/09/14]

• 1x 14-speed bicycle
• 1x Arduino Pro Mini (5v, 16MHz, ATmega368)
• 2x Hall Sensor pre-fab units
• 1x 3.2" 5v LCD Display
• 1x LM7805 5v regulator
• 4x HD-1501MG servos
• 4x servo couplers
• 1x SPST Toggle Switch
• 8x AA batteries 
• Aluminum 6061 stock
• Bowden cables
• Miscellaneous nuts and bolts
• Miscellaneous wiring and connectors