Adafruit 16-Channel 12-bit PWM/Servo Shield - I2C interface | 1411

Driving servo motors with the Arduino Servo library is pretty easy, but each one consumes a precious pin - not to mention some Arduino processing power. The 16-Channel 12-bit PWM/Servo Driver Shield will drive up to 16 servos over I2C with only 2 pins. The on-board PWM controller will drive all 16 channels simultaneously with no additional Arduino processing overhead. What's more, you can stack up to 62 of them to control even more servos - all with the same 2 pins. The PWM/Servo Driver is the perfect solution for any project that requires a lot of servos