Hi, Ishiwatari, my Rapiro used to work ok , but after I added a raspberry pi and uploaded a Standard firmware (Arduino sketch) ,it's down as follows, the motor does not move(testing #M1 to #M9 and it turned out to be #E....) , only a noise as shown in the following video, any advice would be appreciated,
btw: it does not work even I removed raspberry pi
https://youtu.be/BUvADcB52WI