The Dynamixel MX-28R RS-485 Servo is the newest generation servo from Robotis. Equipped with an ARM Cortex M3 features a PID control algorithm and provides feedback information such as speed, temperature, position and load.
We have a bunch of power supplies laying around. This is a bag of 3 randomly selected 9VDC power supplies (wall warts). 110VAC input. About 6 inches of wire with no ends. If you need a power supply (wall wart), you can't beat this deal.