My high school's science club working on the $50 robot. It's the first time working with robotics for everyone involved. We're not sure exactly what the difference between a servo and a DC motor is, whether we need both, and exactly what kind(s) we need. We also aren't sure if we need a motor driver because of the lines:"Servos are DC motors with built in gearing and feedback control loop circuitry. And no motor drivers required!"
If you could clear this up for us, we'd appreciate it. Thanks in advance.