Robot Resources
RobotMarketplace
- motors, speed controllers, gears
Sparkfun
- all kinds of development boards and sensors
Pololu
- good for all kinds of robot parts
Solarbotics
- more robot parts
Electronic Goldmine
- surplus parts, very good prices
Budget Robotics
- robot parts including modified servos
Jameco
- electronic parts store
Mouser
- electronic parts store
Digikey
- electronic parts store
All Electronics
- good surplus electronics store
Small Parts
- various raw materials, fittings, connectors
Robot Store
- a robot website run by Jameco
Surplus Center
- random hardware