How To Make An Inexpensive Watertight Compartment

Using Pelican and Otterbox watertight enclosures are a pretty good method enclosing electronics, here are some examples.

You can use epoxy to seal the wires coming out of the boxes, cord connectors also make for a great method of sealing wires coming out of the enclosures.

You can also put epoxy or silicone over the cord connectors as an added measure.

If you choose to have an on-board battery, these containers work great, just remember not to charge them with the lids closed, the battery needs to gas.

 Pelican Cases are rated to 50 feet, and Otter Boxes are rated to 100 feet. Both have seals, not o-rings. They are both particular about how the seal is set

 in the groove of the case. The ends of the seal must butt up against each other or you will have a leak.

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