Based on the For 40PIN GPIO interface design, suitable for series motherboards and Nano I2C interface control, only 2 signal lines are needed to achieve servo drive Support up to 16 servos or PWM outputs, 12-bit resolution (4096 levels) per channel Onboard 5V voltage regulator chip, output up to 3A current, can be connected to the battery through the VIN terminal Onboard standard servo interface, can be connected to SG90, , and other common servos<br><br>Reserved I2C control interface for easy access to other main control boards Power supply voltage: 5V ( interface) or 6V-12V (VIN terminal) Servo voltage: 5V Logic voltage: 3.3V Driver chip: PCA9685 Control interface: I2C Product size: 65mm x 30mm Via diameter: 3.0mm Compatible and can be directly connected to the following products: SG90 Servo, Servo, Servo Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Color: As Shown Material: PCB<br><br>Package Contents: 1 * Servo drive board<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.