16 Channel 12-bit PWM/Servo Driver-I2C interface Module For Raspberry Pi Shield Module Servo Shield For Arduino Diy Kit

You want to make a robot, When we saw this chip, we quickly realized what an excellent add-on this would be.
Using only two pins, control 16 free-running PWM outputs!
I2C input, control 16 PWM output, you can control the 16 way servo motor.
 
 
Specifications:
 
Frequency: 40-1000Hz.
Channel number: 16 channel.
Resolution: 12 bit.
Voltage: DC 5-10V
Size: 60*25mm
Color: blue
Net Weight: 12 g