I am trying to use an SSC-32 from DFRobot to control servos. I have connected it to an arduino mega which sends serial commands to the servo controller.
I have connected the TX on the arduino to RX on the SSC-32, and connected ground to ground. A central LED labelled 'L' flashes every time the SSC-32 receives a message. I assume this means that it is receiving data.
I am powering the SSC-32 from the arduino, which works fine. The servos are powered separately. I have connected a battery (6V 2800mAh) to VS1 (and removed the VL = VS1 jumper).