The Pololu serial 16-servo controller allows you to control up to sixteen RC servos from almost any robot controller or computer. The interface to the servo controller is a standard RS-232 serial port or a TTL-level serial line, using any baud rate between 1200 and 38400 baud. Multiple servo controllers can be connected to a single serial line, and they are compatible with our full line of serial servo and motor controllers, allowing an almost arbitrary number of servos and motors to be controlled with one serial line. This servo controller is also compatible with the Scott Edwards MiniSSC II servo controller and any software written for it.
Specs
PCB size: 1.50 x 2.275 in.
Servo ports: 16
Resolution: 0.5 µs (about 0.05¡)
Range: 250-2750 µs
Logic supply voltage: 5.6-25 V
Data voltage: 0 and 5 V
Pulse rate: 50 Hz
Serial baud rate: 1200-38400 (automatically detected)
Current consumption: 5 mA (average)
NOTE: The Serial 16-Servo Controller is a kit; before using it, you need to assemble the controller by soldering its components onto its circuit board. To use the servo controller in robotics projects, you need to connect it to your own servos and robot controller.
$34.99 
User's Guide 