Caveatron seals

[Michel PEQUIGNOT]

Hello,

Final stretch !

I am working on the seals as the rubber ones seem to be to much hard for the plastic cases.

Here is the result printed using TPU and with a U shape. The compression distance is 0,2 mm.

I cannot guarantee the best watertight, silocon could be a better choice but, at this time, silicon 3D printers are not the most affordable.

Happy Christmas.

Michel

[Michel PEQUIGNOT]

[Yakume]

Hi! I see you didn't replace the battery, is there a reason for that ?
Nice seal by the way!
I bought a silicone skein with the right size and it didn't give me any problem.

On Saturday, December 23, 2023 at 5:46:45 PM UTC+1 michel.p...@gmail.com wrote:

[Joe Mitchell]

I've been a bit offline lately so starting to work my way backward through the messages. Also working on a new update.

It looked like the TPU printing worked well - I've never tried printing using that material. I'll be interested to know how it works as a seal.

I have not had problems with 50 durometer Buna-N when used with some o-ring grease for short submersions, but I agree softer will probably work even better. I just have not been able to find softer off the shelf o-ring cord.

Joe

[Michel PEQUIGNOT]

I am looking at the battery replacement. I just design a small PCB which could be an alternative to the "breadboard" one using smd components.

I am currently looking for a JST 1x02 SMT connector but it seems that the design is here.

[Antonio Madrid]

Good idea Michel, you can find the connector male for the PCB and female with cables here :

https://www.aliexpress.com/item/32975069278.html?spm=a2g0o.order_list.order_list_main.125.3074194dPagHkV&gatewayAdapt=glo2esp

Rgds

Toni

[caveatron-discuss]

Michel,

Great idea to make a little custom board!

If you are willing to share the Gerber files, I will post them to the Github site.

Joe

[Michel PEQUIGNOT]

Hello Joe,

I have some trouble to find a real SMT JST 2,54mm connector.

Currently I modify a THT right angle JST footprint but it is not the best solution > mechanical stress on the pads when the connector is disconnected.

A dot of hot glue could be an improvement.

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[caveatron-discuss]

I'm not aware of any surface mount versions. Maybe setup the board for a through hole version and trim any excess material on the underside of the board as flat as possible?

Joe

[Antonio Madrid]

Hi Michel,
Could be a solution use this connector mounting it and soldering at the same face of the PCB:

https://es.aliexpress.com/item/4000154852573.html?spm=a2g0o.productlist.main.95.163559f1uVuzLZ&algo_pvid=d8c47ef8-8594-4521-a4b5-c0c1279be003&algo_exp_id=d8c47ef8-8594-4521-a4b5-c0c1279be003-47&pdp_npi=4%40dis%21EUR%211.09%210.69%21%21%211.16%210.73%21%40210384b217070421910955112e21b3%2110000000481500120%21sea%21ES%21197629654%21&curPageLogUid=H8G8gdvehWR2&utparam-url=scene%3Asearch%7Cquery_from%3A

This option avoid to hole the board.

Regards
Toni