forum.heinrichsweikamp.com

We have this in the code already: https://code.heinrichsweikamp.com/public/ostc4/rev/3c73180fde1d

It wasn't added to the latest release because we have not tested it in detail yet (Tests with the logbook software/Apps).


Is there interest in having this included in the data that is sent to ...

Hi Sven.

Completely off topic, but it looks like you've got a pretty decent looking 3D printed protector on your OSTC4 - is the design for this publicly available?

Ngā mihi
Michael Keller

Hi Teun.

tdewilt2 wrote: 19 May 2025, 17:04
subsurface mac 6.0.5214-cicd-release

This is relatively old - try updating to the latest version of Subsurface from https://subsurface-divelog.org/latest-release/.

Ngā mihi
Michael Keller

That's nice but something is not right when you need extra fan.


It's not that the extra fan is needed - but since the temperature of the device is the limiting factor when recharging the OSTC4, having a fan to help with cooling seems to be a way to reduce the charging time.

Also see this post ...

Hallo Paddelputzer.

Ich habe mir zum Laden des OSTC4 eine 'Ladestation" designt:

https://media.printables.com/media/prints/235853/images/3739184_d3a835ac-1ad7-4086-b5bf-e7d77eff2640/thumbs/inside/1280x960/jpg/img_20230417_083949.webp

https://www.printables.com/model/235853-charging-cradle-for ...

Hi Marcin.

When browsing in a logbook page you can use the 'Back' button on the left to get into the page mode.

Ngā mihi
Michael Keller

Hi Thom.


As I am struggling several times to find the 'sweet spot' for the loading pad - would it be possible to get/manufacture a different back plate with a 'groove' for the loading pad at the right spot?


I had the same problem, which got me to design a 3D-printable cradle to ensure proper ...

calestyo wrote: 22 Aug 2023, 23:47 Könntet ihr nicht FWUPD oder sowas supported? Immer Windows installieren müssen, nur um OSTC zu flashen ist doof

Alternativ kann Subsurface auch OSTC4 firmware updaten. Und das gibt's fuer diverse Plattformen: https://subsurface.github.io/download/

Mmmm, dosent seem to do anything.


You should see the device power cycle and then start up when it's done the right way:
- the dive computer needs to be on the charger, and actually charging;
- touch the magnet to the metal casing of the dive computer, on the side where the circular opening for ...

Hi all.

I am a CCR diver, and have been implementing some improvements to the OSTC4 firmware, with a few of them CCR related. I have some proposals that address some of the points raised in this list, and am happy to work on others with some more input on what the requirements are:


For next HW ...

CCR Test today of 1.6.2
[...]


Happy to help with this. CCR diver myself, and have been doing some improvements on the OSTC4 firmware in the past months.
But can I propose that we open a new topic, or use Updated - Feature requests ccr ostc4 to discuss the detailed requirements for this? The ...

heinrichsweikamp wrote: 17 Apr 2023, 11:19 Next version will be water cooled

Thanks guys for this input - cooling the dive computer is indeed working great to get it to charge faster!

I have made a new version of a charging cradle design that I did a while ago. This new version allows mounting of a cheap 60mm fan next to the OSTC4, and it substantially reduces charging time ...

Hi Rob.

Thank you for your efforts with HWOS Config.

I just tested HWOS Config 1.3.01 on a Xiaomi Redmi Note 7 running MIUI Global 12.5.3, and connecting to an OSTC4 is working fine.

Cheers
Michael Keller