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Without getting to the extreme "cyber-space-boat" do you know of a cheap
device/gateway that in some way make the CAN-net interface on my Gramin 292 usefull for communicating either with the brookhouse nmea hub, seatalk or my PC ?? Do anyone know if the Garm292 can communicate on the nmea/garmin port and the CAN-net at the same time. Don't seem to find much CAN information in the manual .... Bjarke "Larry" wrote in message ... "kirwoodd" wrote in news:1168100467.974287.297950@ 51g2000cwl.googlegroups.com: Yeah, it would be great to go to best buy and get an ethernet hub for the boat. It would rely on 120vac (but that is fixable) and it would allow me runs up to 300', repeaters, and routing. JUST what I need on a 43' boat. Hmm...all my little routers/hubs/wifi routers run on 12VDC from the little bricks plugged into the UPS. Converting them to the boat means plugging in a cigarette lighter cord. One must admit it would be really cool to be able to attach your wifi- connected laptop to whatever instrument is on the network...or all of them at once...without the wires, whereever you happen to be. I have Lionheart so configured on NMEA 0183 with a Webfoot plugged into the RS- 232C computer port on the Noland multiplexer. Webfoot converts serial to TCP/IP with full DHCP addressing. It's plugged into a Netgear wifi router. "Virtual Serial Port" software comes with Webfoot so you can address it over any network. All you need is its IP address...even from the beach! The Cap'n, our nav software, connects to COM3 (the VSP fake serial port) and doesn't know the difference. I can connect up to 255 computers to the Webfoot's IP and have had 4 connected simultaneously it feeds data to. Of course, it's best if you don't have more than one Cap'n sending back data to the network because The Cap'ns can't talk to each other over the wifi as they don't know about the others....(c; When I first got it running I took the laptop up to a beanbag under the genoa and steered from there. Crabber toilet floats are easier to see without the sails in the way. Coming about is more fun. You secure your beer so it won't spill, click the new waypoint and hollar "Coming about!" back aft to the winch slaves tending sails. Now retrimmed on the new tack, your beer is waiting....(c; Ethernet is AWESOME when you have LOTS of hosts that you want/need to address individually. Note how well multicast has done. If they used ethernet for the NMEA spec, it would be a total horror show. AND all of your devices would cost more as the manufacturers would have to do MORE software engineering to compensate for ethernets shortcomings for this applicaiton. Dont get me wrong, NMEA is totally bjorked, but using ethernet would NOT have been the answer. If manufacturers want to use ethernet for their proprietary data transfers, thats cool, but why make my temp sensor use a heavy ethernet interface? I'm sitting here talking to a friend on my wifi Skype phone from Netgear: http://www.netgear.com/Products/Comm...pe/SPH101.aspx He's in Moncton, NB. It's free. I can't help, thinking about the little wifi transceiver in this phone, how wonderful it would be for BOATERS, not dealers, if you simply plugged your new GPS/Plotter into 12VDC and it attached itself to the boat's wifi router, plug n play, announcing to all the other wifi instruments, controllers, plotters, etc., that it was new and here and at 192.168.1.35 for a connection. Anyone needing GPS data would simply connect to one of its 65,535 ports and start sucking on that tit for GPS data. At 802.11g's 108Mbps, of course, there'd be zero waiting, no matter how many wifi gadgets were on the boat isolated from the rest of the wifi world. We'd simply eliminate ALL data wires radiating like hell all over the boat to screw up the HF receiver and BE screwed up by the HF transmitter...(c; I for one welcome our new CAN bearing overlords and am looking forward to their benelovent, data sharing rule. Oh, me, too! It's always fun to watch the NMEA action and see what the next round of proprietary nonsense comes out trying to stop me from connecting a Garmin gadget to a Raymarine gadget to a B&G gadget to a Furuno gadget. Oh, by the way....with wifi, the analog radar display would be STREAMED as one of the compressed video streams to anyone who wanted to connect to it. You can watch the radar from your bunk on any browser from the radar's own webpage interface....same as the masthead steerable webcam looking over the horizon on its webpage in realtime. You can even show them to the nice folks back home if you connect the Ethernet on the satellite phone to our boat's router...at great expense, of course. Just plug the webcam up top into 12V and it'll logon to the DHCP same as everyone else. Yep, CAN is THE way to go! |
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