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Not sure about Google Maps, but Google Earth is possible. I plan a video on it at some point.

@oceanexplorationlab is Google earth that are you using on your vídeos?

My works only if I change to Chinese language. It shows a error message about Google api. But I have no idea where to insert the api-key...?

I do my best, but it isn't easy to troubleshoot remotely.

You can use it if someone reliably streams correction data to RTK2Go, but you must be within a 20-kilometer range.

If you only want to set up a local network, you do not need LTE. However, you will need two antennas. You may also need a Wi-Fi access point if the distance is too great for a local hotspot connection between ESPs. There are so many options that it is impossible to give precise advice without knowing your exact needs. Good luck with your project!

@@oceanexplorationlab Thanks for the reply. Does it mean that the 982 module has a wifi chip that can connect it to any regular access point? I ended up ordering two 982s and 2 antennas. Going through the rest of your videos. Thanks again for the quick reply and saving us a bit of $!

No, the Wi-Fi is provided by the ESP32.

Odd! Maybe insufficient power?

Great to hear!

I suggest you use the link in the description and follow the steps outlined in the video. There Is no easier way.

Yes, many people indicated an interest in using LoRa. It is on my to-do list. Thanks for the suggestion.

Glad to hear it helped

You're welcome!

Once your UM982 arrives, you can set it up to send NMEA sentences via UART. After that, you should be able to use the same techniques shown in the video for the ZED-F9P to attach a LoRa module

@oceanexplorationlab thank you for responding, I would like you to help in the setup, incase I have difficulties in software installing ( as I am not a geek)

I don't see why not. RTK bandwidth is low enough to allow for LoRa translated by ChatGPT to Portuguese: Não vejo por que não. A largura de banda do RTK é baixa o suficiente para permitir o uso de LoRa.

Vielleicht wird das ein Weihnachtsgeschenk.

@@oceanexplorationlab jaaaa :) die unterschiedlichen Systeme WGS84 und ETRS89 machen mir Kopfzerbrechen...der UM980 kann nur WGS84, oder?

You are correct; the NTRIP Caster mode of the XBee is not a traditional NTRIP caster like RTK2Go. As I understand it, it differs from a socket server by filtering certain messages (e.g., GNGGA is only sent every 30 seconds) to save on bandwidth. It is useful if you want to stay within your local network (I don’t use port forwarding). If you want to receive your correction data via the internet, I would certainly use RTK2Go or similar.

@@oceanexplorationlab Thanks for this VERY fast answer :-) Think I'm going to provide some RTK services using RTK2GO, because i think this is cool, but also mine some crypto, at the same time. But, Quick questions though : 1: as it seemed to me that you said the UM980 was best suited for Base-station applications, but will this UM980 chip work with the Ntrip Duo config ? 2: dependent on answer in Q1: If i get a UM982 to use Ntrip Duo configuration for dual operations (ONOCOY/RTK2GO), does this then also require a two antenna setup ?

Yes, the UM980 will work with XBee-Duo. You are simply sending the same information to two NTRIP casters. There is no advantage to using the UM982 as a base-only disadvantages. Once you have your RTK2Go up and running, let me know the name of the mountpoint so I can include it in my list.

@@oceanexplorationlab will do... now I will finally get to the ordering of the hardware... still have a long road to travel from here, but FUN !

@@oceanexplorationlab I could only order the UM982(WITMOTION WTRTK GNSS GPS-RTK module UM982) from the trusted sellers on aliexpress, so I went with that, and also the ESP32 Wroom like in your BOM... I hope you get kickback from me using your link btw. Now all I can do is wait a month... hehe.

Dankeschön

I tried and failed :-(

Awesome, thank you!

Glad it was helpful!

maybe you are only sending the NMEA but not the RTCM data? Did you configure your Station with: rtcm1005 COM2 30 RTK base station antenna reference point (ARP) coordinates) rtcm1033 COM2 30 Receiver and antenna description rtcm1077 COM2 1 GPS MSM7 (GPS correction data) rtcm1087 COM2 1 GLONASS MSM7 rtcm1097 COM2 1 Galileo MSM7 rtcm1117 COM2 1 QZSS MSM7 rtcm1127 COM2 1 BeiDou MSM7 SAVECONFIG Save Configuration into non-volatile memory (NVM) ?

@@oceanexplorationlab Thank you for your attention. This is the config and message is not present now, so I guess all is fine. Good luck wit your projects, and more energy to publish them!

Fantastic! Do you mind sharing the name of your RTK2Go stations so I can include it in the list of stations resulting from this series? This is for a future video I am planning. Thanks!

@@oceanexplorationlab My station is ChezBlackRTK01 in Queen Creek, Arizona

@@oceanexplorationlab My RTK2Go station is ChezBlackRTK01 out of Queen Creek, Arizona. Also, do you have a recommendation on ESP32 boards? I'm using a generic one and while it works, it seems to drop WiFI quite often and requires a hard reset to start up again. Also, it's got an internal antenna that gets VERY poor connection even while in the same room as the router.

Your statin is added to my list. As for the ESP module, I suggest a ESP32-WROOM module with external antenna and USB-C like: www.aliexpress.us/item/3256806087645524.html?spm=a2g0o.productlist.main.109.668d33970iww2U&algo_pvid=c2c766d1-1931-4244-87d1-25e17ac4eb0b&algo_exp_id=c2c766d1-1931-4244-87d1-25e17ac4eb0b-54&pdp_npi=4%40dis%21USD%214.21%213.16%21%21%2130.42%2122.81%21%402103011017331761899805362e95b1%2112000036562388230%21sea%21US%214222747334%21X&curPageLogUid=Gn3dhBjgwNNw&utparam-url=scene%3Asearch%7Cquery_from%3A

Glad you enjoyed it!

In the tutorial, I use the Self-Optimizing Base Station Mode. You can read about it in the Commands and Logs Reference Book available at en.unicore.com/. Basically, it averages the position over a set time and uses it as the location if the station is not moved by more than a specified distance. You can also provide the coordinates using the Fixed Base Station with Precise Coordinates option. I plan to make a video on this.

@ thank you

Welcome!

Sure, you can do this. Personally, I stream data to a PC for storage using the ESP. This will be in an upcoming video.

@oceanexplorationlab i see. Does any android app can work with it? Work with PC isnt comfortable in the field. Thanks!

There may be. Also, the ESP32 can be configured as a Bluetooth bridge: www.ardusimple.com/ble-bridge-firmware-update/ . This may be better suited for field work.

No, the binary is compiled for ESP32-WROOM. It will not work with any other ESP version

I am not sure what you mean. You need a multiband antenna.

code is only compiled for ESP32-WROOM - sorry

​@@oceanexplorationlabis there any difference? Tnx!

Yes, different versions of ESP are not compatible.

Given that the Xbee is written in the Espressif IDF, I currently don't know how to edit the code to incorporate an IMU. Certainly, one could use a second microcontroller, but this would not be a very elegant solution. Long story short, I hope that at some point I find the time to familiarize myself with the IDF to modify the code and incorporate custom features, but I wouldn't hold my berth.

@oceanexplorationlab I was thinking, if um981 can export IMU raw data, um980 should be able to do it too with external IMU but no idea how too 😂

If you are thinking of raw data, including things like Carrier Phase Measurements, you are in luck! I plan to make a video about this soon. The IMU (Inertial Measurement Unit, I suppose) threw me off.

The ESP32 does not have enough processing power to support sending and receiving RTCM correction data from multiple devices simultaneously. However, you can connect a single GNSS base station to the ESP32 via UART, and the XBee's NTRIP caster function can distribute this data to several clients over a local network. For building a CORS station, it’s more practical to use free NTRIP caster services like RTK2Go and only use the XBee as a NTRIP server function.

The ESP32 does not have enough processing power to support sending and receiving RTCM correction data from multiple devices simultaneously. However, you can connect a single GNSS base station to the ESP32 via UART, and the XBee's NTRIP caster function can distribute this data to several clients over a local network. For building a CORS station, it’s more practical to use free NTRIP caster services like RTK2Go and only use the XBee as a NTRIP server function.

@@oceanexplorationlab Got it, thank you

You're welcome!

sure, ~5.5 BONO a day per statin which will eventually convert to ONO or so they say.

@oceanexplorationlab then how to register our device to them and any external outdoor antenna needed?

Yes, you need an external antenna with a good view of the sky. Please check out my other videos for detailed instructions. th-cam.com/play/PLlxhE8mLdQdHq4C_DjIz_UhQR9dJWjFJM.html

@@oceanexplorationlab thanks 👍

Thanks!

I have not tried but it should be possible with some loss of accuracy

@@oceanexplorationlab The reason I asked that this antenna (in your video) is good for base station but for rover (say a bike or any small vehicle ) it is not suitable.

@@IamGPSGuy True, they are too big for mobile applications. I have smaller antennas but haven't tried them yet. This is on my to-do list

I have and it works. I plan to do a video on it soon

Great to hear!

Yes, you can. The OBSVMA command is used to output raw data. I will go into the details in an upcoming video.

@oceanexplorationlab looking forward to it.

It all depends on the range you need. If the WiFi range is long enough, it is the easiest to implement with no need for additional hardware. This is coming up in one of my videos soon. Obviously, LTE has the longest range but requires a paid plan

Hi, i have created a log folder in installation folder and restart with "execute as administrator"

No, currently the firmware is only compiled for the original ESP32-WROOM. It is an open-source project, and hopefully, somebody will modify the code so it can be compiled for other variants. But until then, we are stuck with the ESP32-WROOM modules.

This is a tough problem to diagnose from a distance. Do you have the RX and TX LEDs connected? If not, I suggest you do so and see if data is sent from the ESP to the UM98X.

@@oceanexplorationlab For some reason my previous reply disappeared. Darn TH-cam. For ease of trying things out, both my base and rover are connect to my laptop and connected to separate sessions of UPrecise. My base station seems to be working fine, as I see it in RTK2Go with mountpoint 'pacifica'. I even tried the next nearest station 'Tiburon-0001' on the rover and no luck. It seems that there is some issue getting the correction data from UPrecise to the receiver, although the RTCM Input and Output sections are set up like yours in this video. I now notice that an error appears in the data stream when I connect (although everything is green): $command,ICY 200 OK,response: PARSING FAILD NO MATCHING FUNC ICY*76

If I understand you correctly, you are getting the response: "$command, ICY 200 OK, response: PARSING FAILED NO MATCHING FUNC ICY*76" from the rover module. If this is the case, something is wrong because the rover should only receive RTCM data, which is binary, and should only appear in the RTCM monitor, not in the 'Data Stream' window. Make sure you set the output port in the RTCM monitor to the same port your receiver is connected to. This is easy to miss and will produce the results (minus the error message) you are describing.

@@oceanexplorationlab Yes, that error appears only when I first connect to the RTCM data stream. It looks like ICY 200 OK is the first message sent from the NTRIP Caster, which is somehow making it to the Data Stream panel. I have confirmed that the RTCM Output COM port is set correctly to the same port my receiver is connected to. I'm at a loss here. Maybe my issue is a newer version of UPrecise?

I just tested it with the newest version of UP, and it works fine for me. Maybe try using two different PCs? Also, do you see the binary data stream in the RTCM monitor on the rover-facing UP instance?

thanks

Yes, that's correct-in the configuration I'm currently exploring, you need two ESP boards: one for the base station and another for the rover. The base sends RTK correction data to the rover, so there does need to be a stable connection between the base and the rover. However, there are other options to send telemetry data besides WiFi, such as using LoRa, cellular modules, or Bluetooth, depending on your specific use case and range requirements.

@@oceanexplorationlab what about ppp?

PPP only needs a single setup as it does not rely on a base station. This is coming up. Subscribe if you don't want don't miss the video.