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This topic contains 13 replies, has 9 voices, and was last updated by  oliver 1 month, 3 weeks ago.

Viewing 14 posts - 1 through 14 (of 14 total)
  • Author
    Posts
  • #6757

    david.eddy
    Participant

    Hi,

    On the Devices tab I only have ‘Internal GPS’ available and due to the limitations of Windows 10 and Windows Location Services, Internal GPS is only initialising when WiFi is connected (not very handy when you are out in the bush with no connectivity).

    However, other applications allow me connect directly to COM1 and access the NMEA data stream which works perfectly fine with no connectivity (this particular tablet has a dedicated GPS chip).

    Is there a way I can add a device or force Avenza to use COM1 (9600 baud rate)?

    #6797

    Kate
    Keymaster

    Hi David,

    Thank you for your post. To connect to an external GPS on Windows 10, there is a two-step process. The first step is to ensure that your device itself registers that an external GPS is connected to it. The second step is to open Avenza Maps, go to Settings > GPS and refresh the list until the GPS unit is displayed. Once it is displayed, please select it as the GPS to use. Please note that we have only tested a handful of GPS brands/models, and as such cannot guarantee that all GPS devices will work with Avenza Maps. If you continue to have any problems or have any other questions please let us know.

    Kate Brillinger
    Avenza Support

    #9321

    i.scott
    Participant

    Hi,

    I have am using a Avenza 3.4.0 on a Galaxy Tab S2, and trying to get the Trimble Catalyst DA1 Antenna to work with Avenza, with little success.

    You mention above that you need to go into settings>gps to see a list of GPS units. GPS units never appeared when we had the Catalyst connected using the correct apps and set up on the Galaxy.

    Is there a way we can get the catalyst to work with Avenza?

    Regards
    Ian

    #9343

    Kate
    Keymaster

    Hi Scott,

    In general, if the GPS unit will work with the device, Avenza Maps will use it as well. We have only tested with Garmin and Bad Elf GPS receivers, so we know they work, but cannot guarantee that any others work. The steps provided above were for the Windows version of the app which allows users to select the GPS receiver to use inside of Avenza Maps. Unfortunately, this behaviour is for Windows only, and on Android and iOS platforms, there is no way to specify the GPS receiver to use.

    If you have any other questions please feel free to contact our Support Team directly using the contact form at help.avenzamaps.com

    Thank you,

    Kate B
    Avenza Support

    #10572

    david.eddy
    Participant

    Hi Kate,

    After my initial post I gave up on the idea of using the tablets internal GPS and have had great success with using Avenza with a Trimble R1 Bluetooth receiver. It works perfectly fine after pairing with the Trimble app and shows up in the device list.

    In your reply to i.scott you mentioned compatibility with Garmin receivers. Do you know if the Garmin GPS 18x USB receiver (https://buy.garmin.com/en-AU/AU/p/27594) is supported? The only reason I ask is because the USB model can only output data in Garmin proprietary format where as the DB-9 pin serial connector version outputs data in NMEA 0183 format (industry standard) or proprietary Garmin format.

    Thanks,

    David

    #10699

    Kate
    Keymaster

    Hi David,

    In general we do support Garmin devices, however, as technology changes, there is always the possibility that something internal has changed with the Garmin receivers or specific models. In general we test with the Bluetooth models, not USB models, so I cannot say with any certainty whether that specific model would work or not.

    #16241

    monitoring
    Participant

    David, Kate-
    I’m trying to easily get better accuracy in remote locations using an iPhone and Avenza Pro. My office has an old bluetooth enabled GPS Pathfinder Pro with a VGA port and a software CD–but my laptop supports neither. David, you mentioned connecting to an antennae via Trimble app, which app and would it work for my situation? If not, I’m happy to buy a different antennae but need recommendations on simple and effective options. Thanks for any help you send my way.

    #16257

    michaelb
    Moderator

    Hi,
    Thank you for your blog post. We currently support GPS receivers built by Garmin and Bad Elf.
    Other brands may or may not work and thus if you purchase one we can not guarantee you will be able to use it with Avenza Maps.

    Regards
    Mike Brancati
    Avenza Support

    #17021

    ryan5
    Participant

    “In general, if the GPS unit will work with the device, Avenza Maps will use it as well. We have only tested with Garmin and Bad Elf GPS receivers, so we know they work, but cannot guarantee that any others work. The steps provided above were for the Windows version of the app which allows users to select the GPS receiver to use inside of Avenza Maps. Unfortunately, this behaviour is for Windows only, and on Android and iOS platforms, there is no way to specify the GPS receiver to use.”

    —–

    I am wondering if any progress has been made to specify the GPS receiver to use within the Avenza application with an Android tablet. I am working with a Samsung Galaxy Tab S and looking to purchase an external GPS receiver that will pair via bluetooth to my device.

    I understand that I can “enable mock locations” for the Avenza applications and adjust the settings to “keep all fixes,” but I am still unsure how I will be certain that Avenza is in fact using my external GPS reciever as opposed to the internal (built-in) gps.

    The reason I need an external GPS is the project I am working with requires sub-meter accuracy.

    #17028

    Andrea
    Moderator

    Hi Ryan,

    There isn’t currently a way to specify the GPS receiver that is used within Avenza Maps on an Android or iOS device. As long as you have an external GPS unit that is compatible with the application, like a Garmin or Bad Elf GPS receiver, and it is configured to the vendor’s standards, it will be utilized in the app. The best way to be sure of this is to do some testing in the app with the device while connected and disconnected to the external GPS.

    All the best,

    Andrea
    Applications Specialist
    Avenza Systems Inc.

    #17035

    ryan5
    Participant

    Thanks Andrea,

    Would you happen to know of a Garmin or Bad Elf GPS receiver that can provide sub-meter accuracy?

    I am familiar with the:
    Trimble R1 ( < 1 meter accuracy )
    Bad Elf Surveyor ( ~ 1-meter stationary accuracy with SBAS+PPP )
    Geneq ISXBlue II ( 60 cm; 95% real-time with SBAS corrections )

    this is where I am getting the info for these recievers from:
    https://www.anatumfieldsolutions.com/Bluetooth-GPSGNSS-For-Mobile-GIS-Field-Tested-and-Compared_b_38.html

    #17046

    Andrea
    Moderator

    Hi Ryan,

    I can’t confirm that any deliver sub-meter accuracy. The Surveyor is Bad Elf’s best option in terms of their Bluetooth GPS receivers which delivers ~1-meter positioning. Of the Garmin devices that I’m aware of, none of them advertise sub-meter accuracy. I recommend reaching out to Garmin with your inquiry as they can provide a more thorough response.

    Please let me know if I can assist you further.

    All the best,
    Andrea
    Applications Specialist
    Avenza Systems Inc.

    #18409

    fullphaseforest
    Participant

    Hey there, just wanted to bump this post. I am also trying to capture submeter accruacy using an Arrow 100 Blue tooth GPS unit. This unit is very similar to the SXblueII. Just wondering if there has been any movement in being able to select and make sure avenza maps is using the external GPS and not the internal gps of an ipad or other device. Is this somthing offered in the full version? I am only using the trial version at this point.

    thanks in advance.

    Mike

    #18411

    oliver
    Moderator

    Hello Mike,

    Thank you for the post. The way Avenza Maps currently works is by extracting the GPS information from the devices location stream (the data the phone collects) and using it to locate you on your maps. This means that in order to receive readings from an external GPS unit that is connected to the phone, the external GPS has to update or feed its data into the devices location stream for Avenza Maps to access it.

    There is not a way in the app where you can determine if your data is being provided by the external GPS unit as it will depend on how the unit works and there is not a direct link established between the external device and Avenza Maps. I would recommend doing two tests: one with the GPS unit connected and one with just your phone and compare the results. Sometimes you can see a difference in the tests and be able to determine where the data is coming from based on its accuracy but there is a lot of different factors that could affect your results so more tests in different places and using different maps may be required to reach a consensus.

    Kind Regards,
    Oliver
    Avenza Support

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