The servo drive plate specially designed for the raspberry pie can control 16 servos via I2C, each of which has a resolution of 12 bits. It is suitable for driving robot servos such as mechanical arm Features: Suitable for RPI Zero/Zero W/Zero WH/2B/3B/3B+ I2C interface control, only 2 signal wires can be used to drive the steering gear Support up to 16 servo or PWM output, 12bit resolution per channel (level 4096) With 5V stabilized voltage chip on board, the output can reach 3A current, which can be connected to the battery for power supply through the VIN terminal Standard steering gear interface on board, which can connect SG90 and other common steering gear I2C control interface is reserved to facilitate access to other main control boards Provide complete supporting information manual (provide python routines/user manual such as bluetooth remote control, wifi remote control, etc.) Specification: Power supply voltage: 5V(for RPI interface) or 6V~12V(VIN terminal) Servo voltage: 5V Logical voltage: 3.3v Driver chip: PCA9685 Control interface: I2C Compatible and directly accessible to the following products: SG90 Servo Weight: Approx.21g/0.7oz Package list: 1 x Steering Driver board 1 set x installation accessories .