Forum Replies Created
- jrwillParticipantMarch 12, 2021 at 7:31 pmPost count: 22
Not in this hardware revision, sadly…jrwillParticipantMarch 8, 2021 at 8:40 pmPost count: 22jrwillParticipantMarch 7, 2021 at 3:56 pmPost count: 22jrwillParticipantMarch 7, 2021 at 3:52 pmPost count: 22
While testing some stuff at work yesterday, I had mine connected to a USB extender and literally sitting on the sidewalk outside the building and I still couldn’t pick anything up, even with BT and Wifi disabled. 😛jrwillParticipantMarch 6, 2021 at 10:59 pmPost count: 22
I took a look at the insides of the dongle with a 60x microscope I have access to and there are definitely SIM contacts inside the TF slot. I think I know how I can open the CD as well… I’m going to see if I have enough tools at home to do it “safely.” If I can, pictures will be forthcoming…jrwillParticipantMarch 6, 2021 at 9:50 pmPost count: 22
It seems like Maps navigation works with the GPS Tether app in the Play Store + mock locations. Waze still seems screwy, though.jrwillParticipantMarch 6, 2021 at 9:28 pmPost count: 22jrwillParticipantMarch 6, 2021 at 5:45 pmPost count: 22
So even if an Android decide is being fed NEMA coords, Maps / Location Services will ignore it?
That’s a bummer. 🙁jrwillParticipantMarch 6, 2021 at 4:04 pmPost count: 22
I just ended up adblocking it. 😛jrwillParticipantMarch 6, 2021 at 4:02 pmPost count: 22jrwillParticipantMarch 6, 2021 at 3:59 pmPost count: 22
I’m probably cracking mine open this weekend, although peeking in the slots, it LOOKS like contacts are there for it?
Doesn’t mean they’re connected to anything, though…jrwillParticipantMarch 6, 2021 at 3:43 pmPost count: 22
How many satellites are you picking up? You need 4 in order to get an accurate lock.jrwillParticipantMarch 6, 2021 at 5:36 amPost count: 22
You know, looking at that page some more, I wonder if orientation of the CD might have something to do with things. If the antenna runs the length of the dongle, maybe pointing it vertically would make a difference. I’ll try it tomorrow and see.
My other guess is that it’s parallel to the wifi antenna, which could be masking / distorting the signal enough to make it unreadable? Spitballing here, cause this is an interesting problem and I don’t know how the design passed the builtin tests for GPS.
(Hardware / firmware engineer here)jrwillParticipantMarch 6, 2021 at 5:28 amPost count: 22
Mock locations aren’t enabled in the dev options, though. I have no idea how it’s tracking, giving speed, etc. this way, unless it’s using Skyhook to get a starting location and using built in accelerometer / compass / etc. to fake the location data. If so, Android’s doing a hell of a good job.
I can concur that it’s not getting any signal at all from any of the GPSS satellites, though; I put a couple of diag tools on mine and it’s just not picking anything up.
I may see about cracking mine open this weekend and looking at the board layout (unless someone else has done it or can send me the PCB schematics, hint hint). 😉jrwillParticipantMarch 6, 2021 at 4:53 amPost count: 22
Okay, so I did some more testing as I was driving home.
1: Yes, this does track speed and direction just fine! Something with the nav does not work with Maps, though. Haven’t tried Waze, but I imagine the same happens there.
2: Mirroring phone GPS… kind of makes the CD useless for maps, then, cause you could just plug the phone in and use fully-working AA. Maybe there’s a way to expose the phone’s GPS over BT, like having it feed NEMA coords to the CD?
3: Are there any schematics of where the antenna is physically located in the device? Maybe we could tap into that and modify it (even if it extends outside the case) to be able to pick up signals? I really wonder why it can’t pick up any GPS signals, even with a clear view of the sky. EMI, maybe?
Tommy: I’d be interested in discussing this topic “offline” if you’re able to do that. I have a fair bit of knowledge when it comes to these things and might be able to offer suggestions.