Onboard :bit interface, which can be directly inserted.I2C interface control, only 2 signal lines are needed to realize the servo driveSupport up to 16 servo or PWM outputs, each with 12-bit resolution.The onboard 5V voltage regulator chip can output up to 3A current, which can be connected to the battery for supply through the VIN terminal.The onboard standard servo interface can be connected to common servos.Reserve I2C control interface for easy access to other main control boards supply voltage: DC6V-12V (green terminal) or 5V (-USB interface)Servo voltage: DC5VLogic voltage: DC3.3VDriver chip: PCA9685Control interface: I2CHole size: 3.05mmColour:As shownMaterial:PCBSize:65 x 36mmPackage Contents:1 x Servo driver boardOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.