I connect XL330-M288-T to OpenRB-150 without using external supply. DYNAMIXEL Wizard 2 can detect the motor and it can read every information from the motor. However, when I try to set speed, position, the motor does not move. What do I miss? The connection is as shown in the manual
This tutorial video from ROBOTIS may provide some insight about any steps you may be missing:
By default, even though Wizard sees the XL-330, it keeps the Torque slider OFF. Slide it to ON and try setting Velocity and Goal Position again.