Best way for existing GPS-RTK-SMA ZED-F9P breakout board to receive NTRIP RTK via...?

GPS/GNSS
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Have existing hand-held portable device using a SparkFun GPS-RTK-SMA Breakout - ZED-F9P (Qwiic) module. Want to add capability to receive NTRIP RTK stream via cellular data. Want this addition to be transparent to the device, merely improving the accuracy of the existing output of the ZED-F9P card. Will config of existing ZED-F9P need to be updated? Have a choice of using a cellular modem (LARA-R6?) or Bluetoothing to a mobile phone (Nano USB adapter?). Am not crazy about the large antennas of the LARA-R6 (are both necessary for only reception?) and the SIM card and extra account needed. There is a dedicated mobile phone for the device. Apparently the NTRP stream does not involve much extra bandwidth, so Bluetooth looks attractive. Anyhow, need advice on which path and then may have more questions. Appreciate the Community, would do more research first, but wow, what a backlog of entries to search! Any tips, tricks, in that regard appreciated.

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Lefebure app…(android).

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Hi Mark (@MarkHack ),

It’s a very long discussion, but the thread below contains a lot of very useful information. A BlueSMiRF v2 would allow you to feed corrections from your phone and the Android Lefebure App direct to the ZED on UART2. Keep reading, it does have a happy ending! :wink:

I hope this helps,
Paul

2 Likes
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Thank you very much, Paul! Much to chew on! - Mark

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Thanks again, Paul. I picked up the GPS-RTK-SMA ZED-F9P parts listed in the guide:

Put the antenna outside, connected it all up, got the flashing yellow PPS right out of the box. Downloaded U-Center. It all works, can display the ACSII stream from the unit on my PC. Soldered on the connectors and have connected the BlueSMiRF v2. Its green LED is flashing a little more slowly than the PPS of the other unit. I am guessing that means on and no traffic.

I have sent email to rtgps@unavco.org and the new rtgps@earthscope.org. My emails are blocked and get the reason: “The group rtgps@earthscope.org does not allow posting through email”. But their web page GPS/GNSS Data Access Methods | Data | GAGE says to email.

Besides, it’s the weekend now. I wish I had put 2 and 2 together and figured out that the email was a long lead-time item.

I am going to bushwhack and see if RTK2GO can be made to work… - Mark

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PaulZC, I am happy to report success - in about 10 hours over 2 days.

I followed:

Got a prepaid Android phone too for the NRTIP link.
Tested it using the U-Center Deviation Map and can easily resolve position differences of less than 10cm XYZ.

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RTK2GO does not require an email or an account for rovers.

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I want to clarify for other users:

RTK2Go does not require users to ‘create an account’ to be a rover. If you know the mount point (for example, our ‘bldr_SparkFun1)’ then you can connect to it using any NTRIP Client. However, you must give your email address as the user name or you will be blocked or sandboxed. This is for practical reasons - if your NTRIP Client is doing something weird or disruptive to the caster, RTK2Go can contact you with your email address to address the issue.

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