Dive depth logger with arduino

[scubajoeT]

Hola Jorge! How's it going?

So, I was looking at your o-ring seal design and I'm not saying it won't work, but that's not exactly the way I would do it...

For that sensor size, I would design for a Parker 2-009 size o-ring (5.28mm ID, 1.78mm cross section). Gland dimensions would be 1.27mm deep by 2.41mm wide. Diametral clearance between sensor and housing can be bigger--more like 0.05mm. All dimensions are nominal.

You can check out the Parker O-Ring Handbook for more details, if you want. Good luck with the project!

-JoeT

 

[buton]

Thanks for the hint I guess I will follow your suggestion on the dimension.

Is it correct to mount the sensor that way?

 

[scubajoeT]

Yes, that's definitely the right way to mount the sensor as far as sealing goes. For mechanical restraint, you can just use a strip of metal and a couple of screws to hold it in.

I was thinking about your housing design. I think for the long term, it would be better to change to a cylindrical shape and use an o-ring on the bore (like your pressure sensor). That way, you don't require a lot of fasteners to compress your o-ring. In fact, you could use only 1 or 2 fasteners since all you need it to keep it from falling apart at the surface--pressure will keep it closed/sealed. I could try to sketch something up for you if it's not clear what I'm talking about. Other advantages of a cylindrical housing are that it can be all be made on a lathe, which is typically cheaper and faster than mill work.

-JoeT

 

[buton]

so i started a kickstarter project....

DiveDuino DIY dive logger by Jorge Orta — Kickstarter

if you are interested please help !!!!

 

[buton]

I got a new video with the new board, now it is small. i am getting the board for the sensor on Friday. i will test it and now comes the last phase. the housing !!!

[video=youtube_share;8JfnhfZiMMM]http://youtu.be/8JfnhfZiMMM[/video]

 

[buton]

I got the boards for mounting the sensor,

see the new video
[video=youtube_share;TRuqvO_s07A]http://youtu.be/TRuqvO_s07A[/video]

dont forget to visit the kickstarter page for all the updates...

 

[lucca brassi]

If you have some memory free ... it is interesting project too Karst Worlds: Underwater cave-mapping sensor

 

[buton]

wow..thats impressive it goes to another level

 

[undrwater]

Do they use SCUBA hamsters in those hamster balls to record the data? :-D

Amazing work so far buton!

 

[peepk]

Jorge, consider adding electronic compass. It seems new chips include 3-axis magnetometers and 3-axis accelerometers within single case. PeepK