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* THE FORUM FOR ALL THOSE INTERESTED IN BUILDING AND OPERATING MODEL SUBMARINES *



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Papplewick Pumping Station SUBMARINE Day. 31st March - 1st April 2024.

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    Flight controllers as sub levelers

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    geofrancis


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    Flight controllers as sub levelers - Page 3 Empty Re: Flight controllers as sub levelers

    Post  geofrancis Sun Dec 31, 2023 7:33 pm

    well that was a fail, I started doing some basic tests but the barometer kept slowly moving indicating a leak, I gave it a coat of superglue but the leak remained. So I eventually just put the whole thing underwater to see where it was coming from, to my surprise the connector started bubbling. turns out the air was going though the wires insulation to the outside. so this time i have stripped it down and conformal coated the whole board apart from the sensor ports, this should also seal around the wires.

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    geofrancis


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    Flight controllers as sub levelers - Page 3 Empty Re: Flight controllers as sub levelers

    Post  geofrancis Tue Jan 02, 2024 3:39 pm

    Flight controllers as sub levelers - Page 3 20240110
    Flight controllers as sub levelers - Page 3 20240111
    Progress!

    I have rebuilt the barometer chamber. But this time I have used some high strength clear adhesive. And I packed it so there was only a tiny air gap around the  sensors so there is no way for the air to get to the wires.

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    17b


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    Flight controllers as sub levelers - Page 3 Empty Re: Flight controllers as sub levelers

    Post  17b Wed Jan 03, 2024 8:04 pm

    Does it work now as expected?

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    geofrancis


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    Flight controllers as sub levelers - Page 3 Empty Re: Flight controllers as sub levelers

    Post  geofrancis Wed Jan 03, 2024 11:24 pm

    17b wrote:Does it work now as expected?

    I have been giving it some time for the glue to cure before I do any testing but it looks good when i give it a little pressure as its not changing over time. im going to try and get it installed in the sub and tested sometime this weekend. i still need to program the inav controller logic switches to operate the ballast pump. My plan is to have a 3 position switch that changes the output so it can switch between static and dynamic diving depth control, and I still need to install the depth sounder too.

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    17b


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    Flight controllers as sub levelers - Page 3 Empty Re: Flight controllers as sub levelers

    Post  17b Thu Jan 04, 2024 11:21 am

    Are you going to use telemetry as feedback?

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    geofrancis


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    Flight controllers as sub levelers - Page 3 Empty Re: Flight controllers as sub levelers

    Post  geofrancis Thu Jan 04, 2024 11:55 am

    17b wrote:Are you going to use telemetry as feedback?

    yes im running a frsky r9 868mhz receiver with telemetry.

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