1. Built-in Micro:bit interface, which can be connected directly and used, very practical. 2. I2C interface control, only 2 signal wires are needed to realize servo control. 3. Supports up to 16 servos or PWM outputs, each path with 12-bit resolution (4096 levels). 4. Built-in 5V voltage regulator chip, up to 3A current output, can be connected to battery power via the VIN terminal. 5. Built-in standard servo interface, which can be connected to common servos such as for SG90, for MG996R, etc. 6. Reserved I2C control interface for easy access to other main control boards. Item Type: 16 Servo Driver Board Material: PCB Purpose: Suitable for driving robot servos such as robotic arms or hexapod robots. Voltage Supply: 5V (power pin) or 6V~12V (VIN terminal) Servo Voltage: 5V Logic Voltage: 3.3V Drive Chip: For PCA9685 Control Interface: I2C Product Size: Approx. 65 x 36 mm / 2.6 x 1.4 inch Through Hole Diameter: Approx. 3 mm / 0.1 inch 1 x 16 Servo Driver Board