Let's Make Robots!

Arduino voltage regulator and other questions.

 Hello, I have a few questions I hope somebody or several people can answer :)

 

Help with H-Bridge

 Hello, I need some help to reduce the chances of burning my precious Arduino/apartment.
 
I managed to build and test this H-bridge 

Motors and Arduino

   Hello, is it possible to control regular small DC motors with an arduino board? If yes what limitations do I have?  can I use the PWM feature to increase decrease their speed?+

what about servos, do I need a motor driver or can I control them with just an arduino? 

   thanks!

Salvaging components

Hello, I'm new to this site and to robotics, it looks like a great place to find knowledge and inspiration about robots so I signed in.

   I am currently waiting for an arduino board to start experimenting, so I am trying to salvage parts and componets from broken electronics (as much as possible)  to save some money.