I've got the LED screen and a couple of simple buttons soldered to a Pi shield, and am hoping to test some code with it today or tomorrow.
Cherise began research on waterproof buttons, and found some nifty and beautiful ones on Sparkfun, which we then discovered, after a bit of research, would not likely withstand being underwater for lengths of time. Which lead her to some more finds after that!
There are basically three standards of measuring waterproof.
The first is an IP system, as such:
We need IP 68, for full immersion. Sometimes this also comes with impact resistance, IK rating.
Cherise then found this:
Second, we'd want a more specific depth rating, such as 10mH20 for 10 hours, 50mH20 for 3 hours, and so on. This is harder to come by in the specs, as most of these are used at 1 meter or less depths (in pools, for example, or in environments where there is sometimes but not always water - washing bays, for instance), which covers ALL ip68 items. I have emailed the folks at the link above to see if they will give me a depth rating for the button; it looks solid, so I'm hoping it'll do. We may also want a switch with a similar rating, to power the items on and off (at least the scanner - I think we are OK for major lengths of time for the Pi battery; and even the scanner battery may be ok if we can't find a decent one for low cost).
Finally, for the deep sea diver, we have full waterproof PSi length of time rated stuff, similar to what Tom Consi uses. This is the site he sent me for it:
These will be pretty solid, though more expensive and also require buttons as they are just connectors (see below). They do have a magnet switch!
Buttons (sample - need to match connector above)
Similar site to teledyne I found:
More research done later, on toggles:
Here are some three position ip68 toggles, though no depth rating listed:
Any thoughts welcome in the comments!
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