This is related to UR products, not Robotiq, but as the two are used together often I think there might be good input offered on this forum.When working with our UR demo robots I've noticed that they will occasionally start vibrating considerably when they should be motionless. The vibration can be stopped by putting the robot into free drive mode momentarily--however, this seems more like a work-around than a true solution. This behavior poses a problem for any robot applications with sensitive sensing or noise constraints. So far, we haven't really come up with a good explanation for what provokes this vibration or what software/mechanical issue is behind it. I'm interested to know if others have experienced this vibration behavior, whether it has caused any problems in applications, and what solutions they have tried.