I have a BlueROV2 here that is not connecting.
Initially, I had an issue with the lights not working. Accessing BlueOS at 192.168.2.2, I realized that it wasn’t on the last version. I went through the upload process, configured the outputs, and was able to get the lights working properly — except for Lights 1, which I couldn’t turn off.
After that, I decided to power down the vehicle and restart it. However, when I reconnected the battery, the ROV only made the initial beep. I suspect that the Raspberry Pi might not be booting properly.
I don’t have here a Micro HDMI cable to verify the boot process on a monitor. Is there any other test that i could do to solve this problem?
Hi @Luis.Cardoso -
Has the ROV experienced damage? Was it working previously? Do you observe green and red LEDs on the Raspberry Pi at the starboard front of the vehicle?
You should hear the thruster beep from pi startup after a couple of minutes, maybe you need to wait longer?
Do you have the link light on both the Fathom-X units in the ROV and the two lights on the FXTI?
Except for the lights, previously the ROV was working properly.
I’ve waited for more then 30 minutes and no beep was heard. The Fathom-X unit Leds indicates they are comunicating.
I took some photos of all the LEDs that are on. I can’t attach all of then on the post, so I put on Google Drive Folder: Blue Photos - Google Drive
Hi @Luis.Cardoso -
The link light on the Fathom-X in the ROV is not lit - therefore no communications will be possible!
It may come on after start-up, but go out shortly afterwards - it needs to stay on! You can check the resistance of the tether pair in use, and potentially switch to another one to get things working. Please share the resistance measured for each wire in your tether if the issue persists:
I don’t remember very well, but I think that when I took the picture, the tether was not plugged into the Fathom-X Topside Interface. That’s why the LED was not lit. As you can see in the picture below, when the tether is connected, the LED is on.
.Anyway I made the resistence test as recommended and the values were:
Blue Wire (+): 27.7 ohm
White Wire(-): 16.7 ohm
The vehicle still doesn’t start up. Only the first beep is heard.
Hi @Luis.Cardoso -
It’s interesting the resistance varies that much - you may want to check the other tether pairs.
What is the behavior of the LEDs on the Raspberry Pi, at the front of the vehicle (red and green?)
You could connect a monitor with an HDMI adapter to monitor the boot up, or try re-installing BlueOS by removing and reflashing the SD card.
