I have the 2.7 unit. When starting the cockpit none of the arrow keys that controls the thrusters are working. The only way the thrusters will respond to the arrow keys is when I open the diagnostics panel and set both port and starboard thruster to -1. When pressing the up arrow after this, both port and starboard rotates clockwise and the only way they will stop is by holding the down arrow key or by first pressing 0 or 1 followed by -1 again in the diagnostics panel. There is no way I can make them rotate counter-clockwise.
The problem is similar with the vertical thruster, it will only rotate counter-clockwise when set to 1 in the diagnostics panel and does not stop.
I have tried downloading the latest image to the BBB. I also tried opening and closing the diagnostics panel as described here: OpenROV-ROV-Suite 2.5.1 Final Errants.
It is also worth mentioning that although the 2.7 unit should be shipped with all software pre-installed, this was not the case with mine. I had to manually download the software to the BBB.
Is this a software issue or are the ESCs malfunctioning in some way. Are they perhaps not pre-programmed and/or pre-calibrated as they should be?