Dagu Playful Puppy Robot

Hi, i have bought the Dagu Puppy Robot and built it according to instruction manual. But the hip and feet movings doesn't follow the code. Even if i put the command "return;" in the main loop, the servos still move randomly (please check the video clip).

In the video clip i've plugged out all pins except one for test purposes.

Connecting LEDs to the 8 pins and with suitable code the board works fine. Could anyone help me please?

https://www.youtube.com/watch?v=SsL1O7PjQPI

Thank you for the reply.

Thank you for the reply. I’ve used a power-supply unit instead of the batteries and didn’t check the current. I’am going to try it with a better power-supply unit or just with batteries.