Author Topic: USB-GPS Working in PilotAware  (Read 81359 times)

ianfallon

Re: USB-GPS Working in PilotAware
« Reply #120 on: October 26, 2015, 02:31:25 pm »
Got it working  ;D

Which of
a) plugging the GPS dongle into the top right hand side USB port (looking into the sockets)
b) being patient enough to wait for it to download the ephemeris data (up to 15 mins on first/cold start someone said)
c) moving the dongle nearer the window

I don't know, but it seems to work. Will try it out for reliability on my next flight.

I would think b and c !

stephenmelody

Re: USB-GPS Working in PilotAware
« Reply #121 on: October 26, 2015, 03:08:24 pm »
I would agree on B and C, no green flashing light, no GPS info - took me a while to remember that when I got mine!! I've had the GPS dongle plugged into various USB ports so I would discount A.

Also, the ipad has assisted GPS, which can use wifi and cellular services to triangulate your position, giving you a much quicker time to first fix than just a GPS dongle, which needs to see the satellites..., also why it works exceptionally well indoors.
« Last Edit: October 26, 2015, 03:10:09 pm by stephenmelody »

trapdoor

Re: USB-GPS Working in PilotAware
« Reply #122 on: October 26, 2015, 04:05:00 pm »
I have a G-Mouse based on the MTK chipset, and one of the 'recommended' uBlox7 GPS dongles.

The MTK chipped GPS has an almost instantaneous startup, position fix is spot on, as is 'direction'. Whereas the uBlox7 dongle can sometimes take 5 minutes to come up on a cold start and sometimes goes in and out of GPS lock several times before it becomes reliable. It also has a tendency to 'wander' in both position and direction, and often shows a groundspeed (albeit very low) when the thing is just sitting there.

Given a choice, I'll use the MTK chipset G-Mouse as it appears to be 100% reliable both on the ground and in the air, and is easier to position for a sky view - and is unlikely to get knocked out or be shielded by the roof on my all-metal aircraft.

ianfallon

Re: USB-GPS Working in PilotAware
« Reply #123 on: October 26, 2015, 04:14:01 pm »
I have a G-Mouse based on the MTK chipset, and one of the 'recommended' uBlox7 GPS dongles.

The MTK chipped GPS has an almost instantaneous startup, position fix is spot on, as is 'direction'. Whereas the uBlox7 dongle can sometimes take 5 minutes to come up on a cold start and sometimes goes in and out of GPS lock several times before it becomes reliable. It also has a tendency to 'wander' in both position and direction, and often shows a groundspeed (albeit very low) when the thing is just sitting there.

Given a choice, I'll use the MTK chipset G-Mouse as it appears to be 100% reliable both on the ground and in the air, and is easier to position for a sky view - and is unlikely to get knocked out or be shielded by the roof on my all-metal aircraft.

Interesting! I don't see any of those issues with the uBlox.

stephenmelody

Re: USB-GPS Working in PilotAware
« Reply #124 on: October 26, 2015, 04:16:19 pm »
me neither... aside the groundspeed, but I would often get that at home with the built in GPS on the ipad (1 or 2 kts).

the only issue I did have was when it went a bit crazy on me, see this post: http://forum.pilotaware.com/index.php/topic,191.msg2714.html#msg2714

ianfallon

Re: USB-GPS Working in PilotAware
« Reply #125 on: October 26, 2015, 04:21:03 pm »
easier to position for a sky view

An appealing property for sure. We have 3 antennas on a PAW and really all of them need it  :)

Robski

Re: USB-GPS Working in PilotAware
« Reply #126 on: October 26, 2015, 04:23:50 pm »
We have 3 antennas on a PAW and really all of them need it  :)
Can you expand on this, please?
All ADS-B? All P3I? 2 + 1? 1 + 2? Does the GPS figure in the count?
If some are interconnected how are they linked together?
Ta!
« Last Edit: October 26, 2015, 04:26:08 pm by Robski »
Rob
If the good Lord had intended man to fly He would have given him more money.

Admin

Re: USB-GPS Working in PilotAware
« Reply #127 on: October 26, 2015, 04:43:13 pm »
4 Antenna really

GPS
DVB-T
P3I
WiFi

Thx
Lee

bendavis

Re: USB-GPS Working in PilotAware
« Reply #128 on: October 26, 2015, 06:06:20 pm »
I have a G-Mouse based on the MTK chipset, and one of the 'recommended' uBlox7 GPS dongles.

The MTK chipped GPS has an almost instantaneous startup, position fix is spot on, as is 'direction'. Whereas the uBlox7 dongle can sometimes take 5 minutes to come up on a cold start and sometimes goes in and out of GPS lock several times before it becomes reliable. It also has a tendency to 'wander' in both position and direction, and often shows a groundspeed (albeit very low) when the thing is just sitting there.

I too have those issues with my uBlox, taking an age to fix from cold, then shows a small amount of movement, only 2 / 3 mph then settles for a bit. None of which I got when using the iPads gps source.

Ben

Winged_Jaguar

Re: USB-GPS Working in PilotAware GlobalSat BU-353S4
« Reply #129 on: December 21, 2015, 10:41:37 am »

GlobalSat BU-353S4 working great! Many thanks. It's SIRF lV.
Its showing remarkably accurate Altitude against known location height.
Thanks again.
Gerry

Following Gerry's success, my BU-353S4 did not appear to be automatically recognised as a GPS device in the most recent releases (Nov-Dec'15). In the device table it shows as a Prolific Technology, Inc. PL2303 Serial Port. I did get it working by going into the PAW Configuration Menu and changing the Port Table entry for the device from AUTO to GPS (default speed 4800 baud) and following this with a reboot. To repeat information detailed elsewhere you need to know which number port your BU-353S4 is plugged into. Looking at the USB ports with the Ethernet port to the left: Port 1 top left; Port 2 bottom left; Port 3 top right; Port 4 bottom right.

The Bad Elf GPS Pro+ 2300 also works but is correctly detected automatically without needing to update the table.

Chris
G-DATG


« Last Edit: December 21, 2015, 11:56:46 am by Winged_Jaguar »

roweda

Re: USB-GPS Working in PilotAware
« Reply #130 on: December 21, 2015, 01:45:57 pm »
Quote
I too have those issues with my uBlox, taking an age to fix from cold, then shows a small amount of movement, only 2 / 3 mph then settles for a bit. None of which I got when using the iPads gps source.

The GPS receivers in Android tablets also have a tendency to show minor movement when stationery, where as iPad GPS are more stable.

Robski

Re: USB-GPS Working in PilotAware
« Reply #131 on: December 24, 2015, 08:15:39 am »
The GPS receivers in Android tablets also have a tendency to show minor movement when stationery, where as iPad GPS are more stable.
That should say in SOME Android tablets!

My Samsung phone and Google Nexus 7 tablet are rock solid!

I should hope an iPad is better than a cheap tablet, given the price premium.
Rob
If the good Lord had intended man to fly He would have given him more money.

exfirepro

Re: USB-GPS Working in PilotAware
« Reply #132 on: December 24, 2015, 10:51:53 am »
Not a PAW reference as neither of us had PAW at the time, but iPads built in gps isn't infallible either - out in France this summer I was using my (wi-fi only) nexus 7 to drive SD with only 1 dropout the whole trip. A colleague using a 4G iPad mini 3 kept losing gps fix and eventually had to borrow a bad elf to cure the problem for the rest of the trip.

Since adopting PAW I have had very reliable gps performance using a u-Blox 7 dongle on my PAW with both the Nexus and my i-Pad mini 3 - both of which are wi-fi only (the Nexus has a gps chipset but the i-Pad Mini doesn't).

Unless there is a strong technical reason not to (Lee?), I for one will continue to use a dedicated gps to feed my PAW no matter which display device I am using.

Regards

Peter

Admin

Re: USB-GPS Working in PilotAware
« Reply #133 on: December 24, 2015, 11:04:18 am »
Unless there is a strong technical reason not to (Lee?), I for one will continue to use a dedicated gps to feed my PAW no matter which display device I am using.

To be honest, my recommendation is the U-Blox (dongle or g-mouise) plugged into PAW.
On a secondary issue, my MAC maintenance agreement and software developer license is up for renewal in 30 days time.
I have developed a single (free) app for iOS to be able to share the GPS data from iOS devices to PAW.
I do not intend to continue paying out on this, when I do not view this as a core part of PilotAware.

I guess if anyone wants to take on the maintenance of the GPS sharing app ....

Thx
Lee