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Integrate another Fathom-X Interface Board for data transmission

BlueROV2 and ArduSub
#1

Hi all,

Thanks for the forums. I’ve found the solution to send more data(e.g. sonar image) to Topside with another Fathom-X board. But my question is:

  1. Do I need another two boards? one in rov, the other in FXTI for another pair wires to transmit sonar image.
  2. Only need one board in rov, integrate with sonar.

Thanks!

#2

You could replace the ROV Fathom-x board with this one https://blue-linked.com/online-store/ols/products/deps-mux which is a 2 port switch and also has a 24 volt power supply for the sonar.

#3

Thanks for your suggestion. But our rov has another companion computer(Jetson Xavier NX), which connect brunch of sensors, stereo-cam(2 MP each, at least 20hz), Forward looking sonar, AHRS, DVL and running ROS. As MUX-2 board only using one twisted pair, which only has max 10MB/s. Our data string may overflow.

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#4

Hi @gcelec, I found you designed a parallel battery management for rov. Could you send a link of it, we are planning to use two blue robotics batteries for our rov. Thanks.

#5

Hi Lin,

Here is a link to the battery manager. They cost $195.
Thanks.

#6

Hi @gcelec , if we keep plug in two batteries in the manager but all output, is that ok? We don’t want to open the hosing all the time to unplug the battery. Thanks.

#7

Hi @linzhao, If you leave both batteries connected to the battery manager, they will draw a very small amount of current and eventually go flat.
We usually disconnect each of the batteries when the vehicle is not in use for more than 3 or 4 hours.