"That's my final answer Alex"...
Have decided that while the CuBox / Usb powered monitor is a project
I might pursue sometime in the future (Hopefully 20 degrees of latitude south of here) it is just too expensive and time consuming for the present. With that in mind, have to have the basic electronics
anyway, plus a laptop for trips ashore (email, etc) so here is what I am doing.
Rcvr / GPS
Display (Standard Horizon GX2150)
Receiver ( GlobalSat MR350)
Laptop (Assus EPC1000HE) running #! linux
Navware (PolarView / PolarCom / OpenCpn)
Powered USB hub
Power Supply 10-14.5 Vdc input 5v 12v dc output.
The system should be quick and easy to build, and the Assus (re-manufactured) is priced right close to the originally proposed CuBox, and only draws 9W vs the CuBox 3W. Plus it goes ashore in a bag.
No fussing around with ARM architecture.
With the MR350 running off a powered bus and tied into a NMEA
bus with the GX2150, display and data xfer can run independent of the laptop and nav software
. The GX2150 will accept storage
of up to 100 way-points which can be uploaded prior to getting underway. Reduces power to <10W and I already plot to paper charts
underway regardless of whether or not there is a chart plotter available.
If excess house power is available the laptop can be hot-plugged into the system for realtime plotting.
Upgrade to ultra-low power ARM based system with usb driven display can be done in the future with no reversion problems.
Thanks to y'all for your input, the discussion has helped to clarify my initial priorities. Now I might have time to hack up that tafrail generator
(aka Cap' Couillon)
Onboard s/v Solitaire
Along side Deltaville Va