Our team built this DR4B as a test with V5 but the thing is that when we power the motors, it moves in a very awkward manner. If any of you could let us know what’s happening, it will be greatly appreciated. Here is the video of the robot.
It doesn’t look like the motors are trying that hard to lift it. Does it move freely if the shafts are disengaged from the motors?
Does it have 2 motors? Are they both trying to lift it and not working against each other?
Edit: I see it is just one. Is the motor working ok disconnected from the lift? What internal gear ratio on the motor?
From the way the metal is moving, it appears to be twisting side to side. Is something binding? Do you have bearings where anything goes through metal? Are all the arms the same dimension? When first lifting, the top bar appears to shift toward the back and to the sides… could there be a bent shaft somewhere? If you provide some assistance by lifting lightly, will it move freely then?