This module enables you to easily control upto 7 servomotors over an I2C interface, while needing minimal resources from your CPU.
The PCB is equipped with two I2C connectors, so daisychaining multiple I2C modules is an option.
This allows you to control the servos with only 2 data lines (SDA and SCL). This makes it possible to chain multiple modules without the need for more IO pins!
The board can be used with all microcontrollers, such as the Atmel AVR, Arduino/Freeduino boards, Microchip PIC, etcetera. Other computers/boards with an SPI interface (such as the Raspberry Pi) should also be able to control this module.

The module comes with all headers pre-soldered:
One male 1x4 I2C connector, and 1 female I2C connector, (one for input, and one for daisy-chaining).
7 3-pin servoconnectors

Datasheets:
Documentation for the complete PCB