I don’t really know exactly what could cause this issue, however a few hints :
– maybe the Dynamixel bus has some communication problems (quick deco and reco). In this case you should see the LED of some of the Dynamixel blink red one time and then come back to blue or green. If you have this issue, then the learning mode is activated when the Dxl are reconnected, and it also asks the command to stop.
– maybe the top button is not correctly plugged or soldered, and it might be trigger sometimes, which can causes the current command to stop.
You can first check with those points.
We will also soon publish a tutorial on the “Docs” section of this website, to debug the Niryo One by directly connecting to the Raspberry Pi, and see all the detailed logs.