It seems you are never satisfied with a computer system running on a marine
12v system. You seem always looking for something better. Here is my current
configuration on the "No Wiki" of which I am somewhat pleased. It consists of the following:
Computer 1 is a headless fitpc2 with Ubuntu and small Intel SSD drive. Headless means there is no monitor, mouse or keyboard installed. One uses VNC from another computer to access its applications. There are a number advantages to this configuration:
* Low power 12v 8 watts.
* Low memory requirements.
* High speed remote
access with VNC. Remote
response time is almost the same as local.
* Works fine if an attached monitor is turned off. Monitor is only used during software installation
* No Software Bloat, just install Ubuntu 9.04 i386 server edition selecting only "Open SSH" server software.
* then install only metacity tightvncserver gnome-terminal and of course Opencpn.
* Higher reliability
* Simple install.
* Does not require the special fitpc2 display drivers.
* Tightvncserver is configured for screen size 1200x900 optimized for using OLPC computers
with with VNC remote access. Add 'su <username> -c "/usr/bin/vncserver :20 -geometry 1200x900 -alwaysshared"' to /etc/rc.local
Computer 1 hosts the following applications:
vsftpd - ftp server that I use for security camera
gpsd - gps
opencpn - chart plotter
cgpxlogger - gps track logger
BU-353: GlobalSat BU-353 Waterproof USB GPS Receiver (SiRF Star III) gps. 5v < 1 watt. This unit may not be suitable for a fast boat. Further testing needs to be completed. It seems ok at sailing speeds however. On my fast boat, I seem to be ahead of the opencpn displayed position, sometimes by a good distance.
An OLPC computer comes standard with VNC install and works out of the box. Day light readable in full sun light is the biggest plus. Unfortunately it is not tolerant of salt
spray. It is not capable of running Opencpn but is very capable of using VNC in full screen mode to control Opencpn on another computer. 12v 5 watts.
Computer 2 is a fitpc2 Ubuntu computer 12v 8 watts with a Intel SSD drive and a Samsung px2370 Monitor. It has fitpc2 display drivers installed.
Samsung lx2370 or px2370 led back lit monitor for $299 at Best Buy. This monitor works great in a bright solon on a sunny day. 12v 36 watts. I wish they made a smaller screen model as is hard to find a place to put such a large 23" monitor.
Linksys WRT54GL wireless router/switch with dd-wrt third party software. 12v < 12 watts.
I use two v-infinity VCD30-D12-S12-T 12v to 12v 30watt dc to dc converters for all 12v computer equipment
except the monitor. They can be purchased from Digikey.
For the led backlit Samsung monitor I use a 12v dc to 12v dc Weiduller CP DCDC 50W 12V 3A. They can also be purchased from Digikey.
The dc to dc power converters clean up the battery
power and insure this equipment
runs trouble free on a 12v marine system and they are well worth the expense.
receiver with built in antenna
spitter. 12v 3 watts. Works well with Opencpn.
I have been relatively happy with this setup. Low power and multiple computers
for backup. Many mobile devices now days have VNC capability and can access Opencpn wireless and I am continuously looking for the perfect VLC compatible touch screen, waterproof and low power, wireless device, so far without sucess.
Hope this is of some value.