forum.heinrichsweikamp.com

Here is what it looks like when taking the back plate off

Hello, Recently, I noticed that the sacrificial anode on my OSTC5 started bulging, It now makes it almost impossible to charge as it separates the charger from the computer body. I don't use my OSTC 5 as much as I would like but because the compass has never worked. ( Read Here ) I only use it as a ...

Thorsten wrote: 16 Nov 2025, 11:28 Is it green from the beginning or changing while you start moving?
Kind regards,
Thorsten

It gets green as I move it, first halve gets green almost imediately, the rest is quite difficult.

While diving, you should always, at any moment have enough gas to make an ascent to the next source of gas or to the surface while sharing gas with someone. Same idea of Minimum gas on SubSurface planner.

It only takes 4 configuration parameters:

SAC
Tank Volume
Time to solve problem
Stress ...

Thank you a lot for looking into this. Of course I will do in this order:

RTE Reset
Magnet Reset
Battery poweron reset.


And report back.

Actually, I found a way to get past the first half. By swinging the DC, very hard ¡like a roller coaster! but still have not been able to finish all ...

swissdiving wrote: 12 Nov 2025, 05:29 email HW to have the unit looked at...

Thanks

Hi Humberto,

I had a look at the video and it looks like you missed one direction while turning the OSTC (only half turn) you see that the pitch is 50%.
You can do it by try and error => start turning the OSTC and check if the bars are changing to green. If they do it is the correct axis. If not ...

Thorsten wrote: 07 Aug 2025, 19:18 Hi,

you may also try this one if you want

https://www.thingiverse.com/thing:7112082

Have fun,
Thorsten

What is a good and recommended material to 3D print this cover?
Humberto

I does not work no matter what I do. I have tried so many times. There's only 3 possible axes of rotation I have tried every one of them with no luck.

Here is yet another video of my trying what @heinrichsweikamp (matthias) suggested and also what @UrsiGill suggests. Nothing works.

https://youtu ...

Thank you, I guess I don't have. A clear understanding of which is the pitch axis, I will check the video and keep trying.

The compass of my OSTC 5 is still not working and has never worked, I thought a firmware update would take care of this but no. I can't seem to calibrate it, and therefore the reading is wrong and inconsistent to pitch angle.

Here is the video of me trying to calibrate which does not pass from ...

Hatte das gleiche Problem. Gehe in die Einstellungen und schalte „hwOS4 Geschwindigkeit reduzieren“ ein und versuche es erneut.
Das hat es bei mir gelöst. Sorry für das Englisch, ich spreche kein Deutsch.

Had the same problem. Go to settings and turn on "hwOS4 reduce speed" And try again.
That ...

First dive with the new updated firmware.
Diving on cold water when at time 19 minutes It seems that I accidentally hit the temperature of the sun! 1669 °C plus had an instant Deco Ceiling to 26m (my current depth) on an otherwise almost No Decompression Dive.

Screenshot_20250313_091755.png ...

Hi,

Contact us directly, please and we have a look. You can't tell anything definitive from the pictures and the forum is not the right place for repair enquiries. info@heinrichsweikamp.com and we will be happy to help you.

Greetings,
Matthias


3+ Weeks no response. Please help me.
What should ...

heinrichsweikamp wrote: 08 Oct 2024, 12:56 Hi,

Contact us directly, please and we have a look. You can't tell anything definitive from the pictures and the forum is not the right place for repair enquiries. info@heinrichsweikamp.com and we will be happy to help you.

Greetings,
Matthias

Second week, no answer, please help me.

Hi,

Contact us directly, please and we have a look. You can't tell anything definitive from the pictures and the forum is not the right place for repair enquiries. info@heinrichsweikamp.com and we will be happy to help you.

Greetings,
Matthias


I did a week ago and have not received any ...

Somehow I have no issues at all with my aluminum camera housing. After 100's of dives with some scratches and dents, nothing, absolutely nothing, also, here in America, aluminum tanks are very common, some of them have a plain finish and no issues either.

Let's see what heinrichs Weikamp has to ...

Hello I have been diving with my OSTC4 in salty water for only 26 hours total (25 dives) and It has been developing a weird corrosion over the OSTC letters

photo_2024-10-01_13-43-20.jpg

a few dives more

photo_2024-10-01_13-43-30.jpg

The corrosion does not seem to affect the side of the ...

Just posting as I am still waiting for an answer.

Any word on this? @Matthias @Ralph ?

Thanks @Matthias What about the disappearing Deco Stop @15m with Bühlmann ZHL-16C as shown in the linked video? Is that a bug on the Simulator or is it a problem with real decompression calculations on the OSTC4?

Please advice if it is safe to dive with.

Regards.

Humberto.


Any word on ...

Thanks for the detailed report, we'll have a look into this. There will be some improvements in the next releases with the VPM (The time for 9m is entered in the time for 6m and then overwritten for the list display) the total ascent time is correct, also the shown "next stop". A bug, yes: But not ...

Thanks for the explanation.

Thorsten wrote: 28 Jul 2024, 22:18
By the way: the ascend speed coloring of the depth display is progressing good.

This is so awesome! I can't wait to have it on my OSTC4 Thank you all for the hard work.

Thorsten, thanks for your answer!


Well from decompression calculation point of view the behavior is correct. If the exposure of gases is not adding decompression time at the depth you are (15m in this case) then the answer to the question where is the diver in 5 minutes is: "on the surface ...

Thorsten Thanks for your reply!


Hi Humberto,

I guess you had some deco obligation during the dive?


Yes I had a few moments in Deco during the dive. And your explanation makes total sense.


Regarding the futureTTS: I had a look in simulator mode and in case of a TTS of 8minutes the ...

@heinrichsweikamp any coments on this?

Please.

Regards Divert