5 Packs LX-15D Serial Bus Servo with Servo Controller & Debug Board, Dual Bearing Full Metal Gear Steering Servo for RC Robot DIY, High Torque Servo 15KG.CM 6V - 17KG.CM 7.4V, Control Angle 240°
TTL / USB tester board is a servo debugger, which is able to connect the servo to the PC software or other devices and use them to adjust the parameter of servos
Bus servo controller can be used in serial servo control and it can combine with PS2 wireless handle to realize servo remote control
Details Tutorial: Provide bus servo communication protocol, 51 Arduino and STM32 source code