USB Stick Storage

After reading the excellent "Practical Arduino" book, there is a lot of talk about storing data on a removable USB Stick using a VDIP1 chip from Saelig. Good explanation and blog on interfacing chip to arduino.

Building waterproof housing

Great ideas from Diver Dave

1.  For good waterproof seals on cable glands use "braided shield cable", and sometimes Molex connectors
2. Introduction to the lathe from AGI
3. Get a milling machine for $4000
4, Delrin is good stuff
5. Good wiki on o-rings
5

Waterproof connectors

Electrical through bulkhead connectors are available from Digi-Key (#288-1167-ND) submersible to 5 bar (40-50meters).  Also from another supplier. These ones from McMaster look similar but no specs available


Check out the longer thread, elongated thread version #cd07cr-bk, and also the strain relief ones # cf07cr-bk from a sealconusa that provides samples. Plastic but 300' submersible or plated metal.

Battery capacity

For increased voltage, but not capacity use batteries in series.  For increased capacity (same volatge), use batteries in parallel

 Capacities of akaline AA typically 2000 mAH, and C cells 6000mAH

Great 9V connector jameco #216452