1:75 diving support vessel Well Enhancer

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tweety777
Posts: 595
Joined: Fri Sep 25, 2009 6:28 am
Location: Near Veenendaal, The Netherlands
Contact:

Re: 1:75 diving support vessel Well Enhancer

Post by tweety777 »

Hello all,

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Last weekend I found a website with a vast amount of 360 degree photo's taken aboard Well Enhancer from which I made this screenshot, the site is called Rig Tours. The stores are to be lowered by the gap between the ROV winches but these have been moved towards the center of the ship making the gap less then half the original width. That means that unless a pallet is so kind as to hang perfectly aligned it will not fit through here and considering the challenge of making the dive area crane turn far enough and the risk of it hitting the bridge will doing so I decided to drop the idea of loading the stores.
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After having removed the stores related functions I then found this cute little crane added to the rear deck. I had seen it on a few photo's but even when it was visible it was not enough to make anything useful out of it until I found Rig Tours. Now I added the crane to the list of functions though I had to move the dive area crane to the function group Davits in order to make room and have all related crane accessible in the same function group.

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This week 2 ESP32 S3 CAMS arrived including a 160 degree camera and after some 3 hours of programming (thanks to AI, couldn't have done it myself) the livestreams now work!! With the camera's now working I also tested with a 686 tugboat at what ranges I could spot other models though I tested this in my house with furniture in the background making it a worst case scenario but I was able to spot a head on 686 at over half a meter away in the overview and well over a meter when in the camera's own view which uses the entire grey area of the tab. That is somewhat limited since the situation where this is the most useful is when a model that small might not even be visible anymore behind my model making my camera's the only way to make any sense of the situation anymore. Therefor I decided that the bow camera doesn't need to be 160 degrees but rather 100 degrees will be perfectly fine.
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The side camera's are not only intended to provide a good look at what is besides the model but also to see how the lifeboats are doing, especially when hoisting the lifeboats, I decided to make a temporary test setup to see whether the 160 degree cameras are actually up to here task and it turns out that I can even see the hyperbaric lifeboat when it's hanging in it's davit. I did decide to move the camera from against the wall beside the lifeboats to the edge of the superstructure to avoid the view being blocked by the forward lifeboat and having proper view at the lifeboats in the water which is very useful to judge when to lower the hooks on the lifeboat though I'd then need to switch tabs since that button is on another tab. This leaves some room for improvement, perhaps I'll add the hook buttons to the correct camera views.

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Considering that I transferring back to controlling the model through 2,4GHz nRF24 transceivers is has now become necessary to be able to select a channel. That also creates the need to see what channel is actually selected and this 3digit display those that very well and seems to be readable at distance so I can easily read it when I try to select the channel in the boat. Due to the differences in protocol between my transceivers and standard transmitters makes it vitually impossible to interfere with one another and this is made completely impossible because standard transmitters hop between different channels to communicate with the least possible noise and other interference which means that they will skip my channel as it sends propulsion commands 50x per second and telemetry comes back 20x per second making it quite a busy channel. The channel selected by the WiFi will also be quite busy when the camera's are streaming and thus this channel will be avoided as well. In order to save bandwidth I'm making buttons to make the livestream per camera active and inactive, take a photo at the camera's full resolution and record video and zoom in by cropping the image to a selected center (click on the screen determines the centerpoint for the zoomed in image) while photo's and video recordings are saved to the ESP's SD card which can later be downloaded via WiFi.

At the moment I tend to concentrate on finishing the transmitter first considering that it's fysically almost finished and could possibly take about a week to complete. That is also helped by now being almost finished with programming the transmitter, I only need to make the camera control buttons (zoom, record, take photo and livestream) working properly (like 75% done now) and then make all commands go through the Python program that also controls the joysticks and have that sort out whether to use the nRF24's or WiFi when the nRF's are not available and sort out the adressing of all boats and other devices. For completing the transmitter I am somewhat relying on the new PCB's for the 15 joysticks arriving in time, these are in my country so it doesn't need to be a problem. I have now also received a magnetic connector to electrically connect the add-on and main transmitter to replace the not always properly connecting VGA connectors which then also makes it quite appealing to replace the wiring in the add-on so I can clean up the mess I made of the wiring there.

Greetings Josse
Making a complete new Well Enhancer, again scale 1:75.
tweety777
Posts: 595
Joined: Fri Sep 25, 2009 6:28 am
Location: Near Veenendaal, The Netherlands
Contact:

Re: 1:75 diving support vessel Well Enhancer

Post by tweety777 »

Hello all,

For the communications there have been a couple of changes. For starters the 2,4 GHz turned out not to be my best options but WiFi using outdoor WiFi extenders is much better for a proper range with all communications including videofeeds. There will be a Wavlink N300 outdoor with a range of up to 500m though in my use case 300m is more realistic. Aboard the model there will be a different repeater which will connect to the transmitter and maintain a second WiFi network for the model, it's lifeboats and webcams. This way I'll be able to maintain connection between the Pi aboard Well Enhancer and it's webcams so these can be used to evade obstacles when the connection with the transmitter is lost.

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This mold has 1 corner that is too low so I added polyester filler to solve the issue.
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I'll be filling and sanding the the stern molds as well since these don't align as well as I though it would. First I'll be sanding down the edges to take away the chance of any misalignments caused by that.

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I continued working on the transmitter as well. The new joysticks now fit in place though I will need to replace some threaded inserts and wait for the required screws to make them fit in place permanently.
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The new analogue/digital converters have now been attached now I need to wire all the joysticks, then add the plates to the bottom and the rear and include hatches for accessing the battery and the buttons at the back of the Pi then the main sections will be pretty much finished.
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The add-on is starting to come along as well. Considering the changes in propulsion controls I removed the now unneeded electronics and LED's. I also removed the joysticks for the bow thrusters so I can replace these with my own design throttle levers for when I want to control the thrusters while keeping the bow thrusters running. I'll be using the the levers from the thruster levers. I still need to connect a couple of I2C devices and solve the issue causing the backlichting to fail more often then they work and then the add-on is suddenly very close to being finished.

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Considering the vastly increased range of the new WiFi network the lighthouse is no longer needed. I now removed the lighthouse controls from the UI. I also found I was missing a few controls for the helicopter so the room left behind by removing the lighthouse is now used for the missing controls. I also made a backdoor to input telemetry through the communications program (also handling the propulsion controls) so I can check whether or not the telemetry is handled properly in the UI and this turns out to be the case.

Greetings Josse
Making a complete new Well Enhancer, again scale 1:75.
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