SLA Battery Charger - Packaging Box

The SLA Battery Charger

Compass packaging box

2D - Honeywell HMR3100 Compass - 19mm x 19mm!

Ok, I have three nice newish webcams here.  I would like to be able to get at least one of them working via the command line to take pictures, so I can record what the boat is looking at, as it chugs along.

I might have to write a driver (shudder), so that I can get one of the webcams listed below to work:-

• Logitech Messenger USB        Ven: 0x046d  Dev: 0x08f0
• Logitech Buddycam Express   Ven: 0x046d  Dev: 0x0920
• Logitech Quickcam Express    Ven: 0x046d  Dev: 0x0928

Why does Logitech have to make it so difficult, ie.

The 70mm propellor will be too small.  I think I will need something at least 4" in diameter.  I have looked on line at some of the electric Mercury outboard trolling motors.  Seems to be big in USA, but not so much here.  Apart from the expence, would have to worry about the shaft seal, as the motor operates underwater.

Can anyone help me out here? 

Will need to figure out a way to attach a shaft to the wiper motor.

At the moment, I would like to try using a snug plastic tube, as a flexible link to the propellor shaft.

Need to pick up the SLA batteries first.  Once the componants have been weighed, then I can work out the size of pontoons I need.  173mm x 90mm of PVC tubing will lift 1Kg.

I need to back this up, JIC something goes pear shaped with the HD.  It is rather old :-)

Test, ghosting back to another HD.  Then try upgrading to 6.0 via cvsup! 

Will need to find some documentation on the Internet, concerning Sealed Lead Acid Battery voltage vs capacity left in the battery eg. at what voltage does the battery have 40% capacity left?  Is this trackable, or am I barking up the wrong tree here.

It would be nice to know how much is left, so one can have a strategic  backup plan.