servos and DC motors

[chucho]

Hello everybody, I'm building the 50 dollar robot, but I'm in a trouble, it's because I can't find servos where I live, so does anybody has an idea if I can replace the two servos for two DC motor, and also how do I can replace them in orden than they work, like the servos do? please help me, I wait for your answer. Thanks

[ed1380]

get an ESC (electronic speed controler) plug one end into servo port and plug the motor and battery in the required places

[Ro-Bot-X]

I just posted a tutorial about a robot built from VCR parts and a microcontroller. It also has a H bridge to drive 2 DC motors, so this is the way to do it if you can't find servos.
You can find the tutorial here: http://www.societyofrobots.com/member_tutorials/node/29