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Hybrid Ballast Tank/Piston System

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  • #76
    Do you do anything else to the 3pin to make them waterproof? I.e. use grease?


    • #77
      If needed to open the xt60 or xt90 connectors.
      Regards Gantu


      • #78
        Originally posted by coryhenry View Post
        Do you do anything else to the 3pin to make them waterproof? I.e. use grease?
        Short answer is yes Sir!

        I plan to go into detail about water proofing the bulkhead 3 pin connections in a future post as currently they are just mocked up and not finished. As far as water proofing the external connections, I’m exploring some simple design options and will hopefully find something that will do the trick.

        I’ve had to switch gears back to looking deeper into the overall command structure for the controls, programing code strategy, ease of use and failsafes. This will dictate the final signal wiring layout.

        Getting there slowly.

        Last edited by Monahan Steam Models; 03-19-2021, 10:33 AM. Reason: Original reply long winded


        • #79
          Originally posted by gantu View Post

          Great find! Thank you for sharing these links!


          • #80
            I have not posted any updates in a while but I assure you some progress has been tirelessly made between posts. Been working on this project from pre-dawn to dusk, everyday since the last post. The hardware updates were simpler and will try to post updates soon. The software updates have been a handful and have been taking up most of my time lately.

            Mostly focused around getting a solid compatible Interrupt based communication link between the receiver and Arduino have been a main challenge. I need the data interrupts to the main program loop to be fast. I’ve optimized this in the latest software code build. But it has brought problems into other functions of the build. Hence my silence.


            • #81
              Okay this is a probably a waste of a post but screw it.

              After beating my head against the wall for hours on end, day after day, writing multiple different coding strategies for the Arduino to interface quickly and accurately with 7 receiver input channels while not interrupting the main program loop, and keeping the program small, I finally nailed it! Holy hell I swear I was about to loose my beans trying to crack this problem.

              Solution achieved just in time for Friday night. Now I can rest. Downs some whiskey while writing this. Hey I earned it.

              Most of the code and information exchanging has been written for the overall main program that deals with the pressure sensors and laser range finders, gyros and so on. I had to stop work on that code until I could establish a rock solid communication with the damn receiver that wouldn’t overburdened and block the main code from updating.

              Long story short. I win and can now move forward with the project. Will post updates when it’s worth sharing.


              • #82
                I'll join you for a whisk(e)y. Congratulations!
                If you can cut, drill, saw, hit things and swear a lot, you're well on the way to building a working model sub.


                • #83
                  Originally posted by trout View Post
                  I'll join you for a whisk(e)y. Congratulations!
                  Cheers to that!


                  • #84
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                    • #85
                      Testing for the bow piston trim tank of the hybrid ballast tank project. This code tests the inner and outer most limits set for the piston’s travel when in dive or surface mode. The distance is recorded by the Lidar sensors mounted at the rear of the cylinder. Also shown at the end of the video is the vent or blow function for the main ballast tank. Most of these functions will be automated in future code updates. This is just a demonstration of the manual override function.




                      • #86
                        That is awesome Nick, yay Engineering!!
                        v/r "Sub" Ed

                        Silent Service "Cold War" Veteran (The good years!)
                        NEVER underestimate the power of a Sailor who served aboard a submarine.


                        • #87
                          I apologize for the lack of updates lately and I apologize that this id only a brief update. My main focus currently has been on the structuring and fail safes of the code for the sub. It is a big project. The hardware side was easy comparatively. Here's what I have:

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                          Overall forward compartment with upgraded pump controllers in the center.

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                          Overall look of the cylinder. Top is forward.

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                          Another view of the forward compartment showing the new stacked pump controllers.

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                          Rear compartment command unit.

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                          Overall view of the WTC.

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                          Another overall veiw, Stern (top) Bow (lower)

                          I left out the vent plumbing fitting at the top central ballast tank on purpose (safeguard from myself) . This keeps me from the temptation of premature dunk testing the before the rest of the work to the cylinder has been finished.

                          Will be focused in the coding land and testing from here on out, before any more build updates are posted. So far everything is working awesome.

                          Last edited by Monahan Steam Models; 04-14-2021, 09:32 AM.


                          • #88
                            Like Deitrich said to the precinct in the sitcom Barney Miller, Where the hell did you get the atomic bomb?
                            VeryHigh Tech, Nick..almost a shame to hide it in a hull!-BG
                            Last edited by Bob Gato; 04-17-2021, 06:18 AM.


                            • #89
                              Been burning the candle at both ends working on this ww2 type VIIC project. First was the electric torpedoes and the months of daily r&d that went into testing various designs. Then was Development of the launch mechanism design that could with one channel open launch and close the doors of all five tubes. (Still need to work on the aft tube). Then it was the development of the gas Torpedoes and the work to get them to load and launch with the launch tubes. Lately the work was focused on the hybrid WTC and even more recently the code development that operates all the gizmos. Lots of testing again of different sensors and code structures.

                              I’m fried. Brain is mush. Decided to take a break away from the sub building and build a 2 wheeled self balancing autonomous robot for my 2 yr old daughter who absolutely loves the Pixar film Wally. Some custom code was written for it but here it is. It uses echo location to avoid obstacles (mostly). Not perfect but I’m beat. Same principal as a self leveling sub.



                              • #90
                                You are "out of control", my friend-but your robot is not! Very impressive!