ITEM NAME:16 Ch 12-bit PWM Servo Shield Motor Driver I2C Module PCA9685 For Arduino FT Features: 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 Package Included: 1 x  PCA9685 16 Channel 12-bit PWM Servo motor Driver I2C Module For Arduino Robot.1 x PCA9685 16 Channel 12-bit PWM Servo motor Driver I2C Module For Arduino Robot. You want to make a robot, When we saw this chip, we quickly realized what an excellent add-on this would be. Resolution: 12 bit.