Tina, just a quick primer on how GPS works to answer your first question. There is a constilation of space based platforms that the defense department put up for the purposes of navigation in military applications. This system uses very carefully controled time sources and a receiver which measures the deviation of signal received from one of several birds that your receiver locks on to at any given time. You need I believe it's 4 birds at a minimum to have a fix in 3 dimentions. (someone pipe in if I'm way off here) So, can you use the GPS inside? Not so well. Yes, mine comes on in my house but there's no floors above my position and the roof allows some signal to pass. This is not normally the case. In most buildings (like where I work for example) the roof and materials totally obstruct the signal. In fact, I work in a lab where we use GPS signals for very careful timing. We have to pass an antenna up through the roof and calebrate it carefully, with the position exactly of each sattellite so that we can generate really accurate time signals. My point is that you have no signal to work with inside a building typically so it's not possible to get a fix, something your receiver needs to transmit position data to the Sindero package. If you had another means of calculating a fix either with a gyroscope or something that can calculate movement until the signal is reacquired you might have something but as it stands now I don't think it's workable indoors for the most part. I'm sure someone from Sindero will detail this better but this is my understanding.
Thanks Scott----- Original Message ----- From: "Tina B." <tinabir@xxxxxxxxxxxxx>
To: <gps-talkusers@xxxxxxxxxxxxx> Sent: Thursday, December 13, 2007 4:24 PM Subject: [gps-talkusers] gps inside?
Hi. Does the braille note gps work indoors yet or is that being planned? Also, if I get a jump drive for my m-power , can I save the maps for the US on to that drive or what kind of device are they on like a cf card or an sd card? I know you can get those little drives with several gigs have a friend who just got a 3 or 4 gig one so that is what made me wonder and if I can, what gig should I go with just to be sure there is enough space? ----- Original Message ----- From: "Raul A. Gallegos" <raul@xxxxxxxxxxx>To: <gps-talkusers@xxxxxxxxxxxxx> Sent: Thursday, December 13, 2007 1:40 PM Subject: [gps-talkusers] Re: BrailleNote GPS vs Voice Sense GPSHi. On the Voice Sense I put in Sendero as the virtual position and the Lighthouse as the destination. It showed that the destination was 64.37 miles southwest from Sendero.The Voice Sense plays progress tones, but I don't think they are three seconds apart. I created the route using two slightly methods. The first was using the micro hard drive CF card with the whole West of the US loaded. The second test was with only the California maps loaded in the flashdisk of the Voice Sense. In both cases the result was the same. Creating a vehicle route took 57 beeps. The route had 364 waypoints. To be honest, this is longer than what I would have thought. At least when I've created many routes in Denver, Chicago, and Fort Wayne, 60 or so mile routes do not seem to take as long, but I don't know if POIs or map areas have something to do with this.So, there is the Voice Sense side of things. Kevin Chao said the following on 12/13/2007 1:14 PM:If we wwant to figure this out we can run a test. Let's say we just have the maps for California loaded and create a route from Sendero Group to the LightHouse and see what the difference in speed is. Raul, I am not sure if there is some progress tone on the Sense Nav. On the Sendero GPS, there is a swoosh that occurs every 3seconds to indicate some progress. Starting: Sendero Group 11188 Maple Lane Davis, CA Ending: LightHouse214 Van ness Ave San Francisco, CA Could someone perform the route calculation on the BrailleNote and someone on the VoiceSense? We then can compare notes. It might be faster on the VoiceSense as Alex suggested as there is more processing power and RAM on the VoiceSense. There are many variables that aren't accounted for, but this is just a general comparison. Kevin -----Original Message----- From: gps-talkusers-bounce@xxxxxxxxxxxxx [mailto:gps-talkusers-bounce@xxxxxxxxxxxxx] On Behalf Of Judy WSent: Thursday, December 13, 2007 8:58 AM To: gps-talkusers@xxxxxxxxxxxxx Subject: [gps-talkusers] Re: BrailleNote GPS vs Voice Sense GPSIsn't the chip in the Braille Sense faster? Maybe someone from sendero couldtell us if route calculation is noticeably faster. Judy -----Original Message----- From: gps-talkusers-bounce@xxxxxxxxxxxxx [mailto:gps-talkusers-bounce@xxxxxxxxxxxxx]On Behalf Of Raul A. Gallegos Sent: Thursday, December 13, 2007 10:47 AM To: gps-talkusers@xxxxxxxxxxxxx Subject: [gps-talkusers] Re: BrailleNote GPS vs Voice Sense GPS Hello Eric. I'd be happy to comment on the Voice Sense side of things although I'm not sure how much my comments will mean since I've only used the Voice Sense and not the Braille note. The things i can comment on are mainly things which I've seen from reading other user experiences, but none from me personally. Eric Brinkman said the following on 12/13/2007 11:26 AM:Hi, I am curious whether anyone who has used both the BrailleNote GPS and the Voice Sense GPS can comment on any differences between the two. Thanks in advance. Eric-- Raul A. Gallegos .. GW Micro Technical Support Voice: 260-489-3671 .. Fax: 260-489-2608 WEB: http://www.gwmicro.com FTP: ftp.gwmicro.com-- Raul A. Gallegos .. GW Micro Technical Support Voice: 260-489-3671 .. Fax: 260-489-2608 WEB: http://www.gwmicro.com FTP: ftp.gwmicro.com
