Hey, so our club recently acquired four T100 thrusters and a Fathom-S tether interface with 50 feet of tether to use on our ROV for the MATE ROV competition, and are trying to figure out how the Fathom-S interface works. I’ve viewed your technical documentation and was wondering if anyone knew the …

I’d think of the tether interface like a two-wire 10/100 ethernet switch, meant to pass data from another device between two switches. The other six wires could be used for power, but more like POE levels of power. We used to pull stupid amounts of current through 24 gauge wire in the R/C airplane d…

Original code from BR is here: br-esc-examples/arduino/AnalogJoystickControl at master · bluerobotics/br-esc-examples · GitHub

Sorry, I was thinking of the Fathom-X, but the concept is similar in that you’re just using the Fathom boards to pass data from one arduino to another arduino. I think they’re basically just USB/232 to 422/485 converters to get the distance. Either way, the Fathom boards should essentially be invisi…

What if we are using just one arduino on the rov its self? its for a school competition and there are some limits on what we can do

Short answer is that I have no idea, but I don’t think the Fathom boards work that way. I don’t really know how data is transmitted, but it needs to be encoded (232/422/485/ethernet/etc) to be passed from one point to another and it needs that encoding done before it gets to the Fathom board, which …

Hi Matt, Thanks for the post! I’ve got some answers here: Get power from the surface to the ROV is separate from the Fathom-S board. The Fathom-S doesn’t carry any power, it just has serial communication and video. You’ll need separate wires to send power. The serial communication can be used…

Ok thanks for that advice, ill give that a go and come back if I cant get it to work, real quick though, in serial print are all the outputs supposed to be the same? When i load up the serial monitor, all values are the same no matter which joy stick i use, when I push the joy stick, all values move…

@MMcelrath It sounds like you might have some bug. Check your code to make sure it is doing what you expect. If you need help debugging, please share a copy-paste output (try pastebin.com ) of the entire program that you are putting on the arduino, and the output in the serial monitor.

Ok, The code is on Github as linked above (it wont let me relink it but its the [Here] link above) , ill get a pastebin of the full code probably tomorrow, I dont have round the clock access to the building our tech is in.

I just wanted to verify if you have made any modifications to the code.

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MMcelrath (Matt McElrath) March 7, 2019, 12:20am 14

Any recommendation of what would be a good range or center based on your knowledge? Ive been experimenting with it but to no success atm though i might be close.

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Information on Fathom-S and How to with arduino to Basic ESC

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Information on Fathom-S and How to with arduino to Basic ESC

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