I had similar symptoms, caused by the servos drawing more power than the USB could supply. Try it with the servos powered from and external source, you could use a 4 cell battery pack or a 5v power supply.
I had similar symptoms, caused by the servos drawing more power than the USB could supply. Try it with the servos powered from and external source, you could use a 4 cell battery pack or a 5v power supply.