From: Colin S. <cj...@ab...> - 2006-08-22 20:56:08
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> Date: Tue, 22 Aug 2006 14:26:14 -0400 > From: "Cesar E. Perez" <ces...@ho...> > Subject: [Gumstix-users] Questions regarding Gumstix > To: gum...@li... > Message-ID: <BAY...@ph...l> > Content-Type: text/plain; format=flowed > > Hello, I have a few questions regarding the gumstix. > > 1) How many expansion boards can be added on to the gumstix? > 2) What do I need to get in order to program the gumstix? > 3) Can a USB webcam be added to the gumstix? Yes it can (at least in theory, i've not tried it personally) but via a rather weird method. You have to get a compact flash USB host card, its quite expensive and only works at usb 1.1 speeds. See http://www.ratocsystems.com/english/products/subpages/cfu1u.html for more details on it. You could also connect up an ethernet based webcam like an axis camera. Or even a wifi camera. You can also use gammu (http://www.gammu.org/wiki/index.php?title=Gammu:Main_Page) to take pictures from mobile phone cameras and get them to the gumstix over bluetooth. However when I tried this with my nokia 6230 it didn't work. |
From: Colin S. <cj...@ab...> - 2006-08-22 21:02:34
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> Date: Tue, 22 Aug 2006 14:12:29 -0600 > From: Brad Midgley <bmi...@xm...> > Subject: [Gumstix-users] gps repeater via bluetooth > To: gum...@li... > Message-ID: <44E...@xm...> > Content-Type: text/plain; charset=ISO-8859-1 > > Hey > > I have read that gpsd can act as a gps repeater. It shouldn't be too > hard to hook this up to a bluetooth server socket so a pda could get the > gps data too. Has anyone played around with it? I thought gpsd operated over TCP/IP? So what it basically does is make your NMEA data (or gpsd's own format) available over a tcp socket. Then as many clients as you wish using whatever network technology you wish can connect to this. Given this i'd say the obvious thing to do is to use a PAN bluetooth network rather than a bluetooth serial port (rfcomm) system to distribute out the data. The downside of this approach is that it probably won't work on most phones as they don't support bluetooth networking. I've used gpsd in tcp/ip mode to allow a java application i'm writing to read from the gps without having to grapple with java serial port libraries. But that only connects 1 client at a time. > > (It should also be possible using alternating sdp advertisements to > support 2 pdas simultaneously... that would be a trick no current bt gps > can do) Sounds like an interesting trick, would love to have bluetooth gps which multiple devices can read form. |
From: Brad M. <bmi...@xm...> - 2006-08-22 21:26:17
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Colin > I thought gpsd operated over TCP/IP? right... it's through a gpsd client that you get back to a straight nmea text stream for piping out an rfcomm connection. It can even be DGPS-corrected if that's worth the trouble (I was not impressed with the difference in using DGPS) Brad |