8-channel servo drive expansion board, which can easily realize 8-degree-of-freedom robot dog robot arm and other articulated robot expansion, compatible with HXFB graphical programming core board and R3 development board, convenient for users to carry out maker development more conveniently. Special 2.4G receiver and ultrasonic obstacle avoidance module interface are designed, which is more convenient to use. 1. Eight-channel PWM servo drive 2. Integrated 2.4G wireless receiver, Support 2.4G handle control (2.4G handle control not inlcuded) 3. Integrated ultrasonic obstacle avoidance module interface, can be equipped with ultrasonic obstacle avoidance module (module not included) 4. Eight-degree-of-freedom mechanical dog drive, eight-degree-of-freedom robotic arm drive 5. Can realize functions such as mechanical dog, robotic arm, smart trash can, and open source related programs 6. Can be used with HXFB graphical programming core board or for development board 7. Open source 8-degree-of-freedom quadruped mechanical dog routine (based on HXFB graphical programming core board) 8. Open source 4-degree-of-freedom robotic arm routine (based on HXFB graphical programming core board, R3 development board) 9. Open source smart trash can routine (based on HXFB graphical programming core board) 10. Open source wireless mechanical switch routine (based on HXFB graphical programming core board) 11. Open source smart parking gate routine (based on HXFB graphical programming core board, R3 development board) 12. Equipped with two driver chips, the maximum current of the driver chip is 1A, and one chip drives four servos Working voltage: DC7-8.6V Output interface: 3P servo interface (8 channels) Color: Black Material: PCB+Components Package Contents: 1 * Servo drive expansion board Only the above package content, o