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You bet!

www.ardusimple.com/ble-bridge-firmware-update/

Update, I managed to get BT BLT bridge firmware working, I just needed to configure UM980 to send information to the correct COM port(COM2 in my case). Now all I need is some kind of 3d-printed housing for UM980 and ESP32 and I'll be able to use the rover as either USB serial directly plugged into my phone or via bluetooth and a power bank plugged into UM980 USB-C port instead.

Glad to hear it was helpful, and congrats on getting your base station up and running!

That is the idea. Projects like GEODNET already distributing crypto but need a proprietary RTK base. Onocoy will hopefully follow soon and allows third-party RTK bases like described here.

What did you expect? it is $7 from AliExpress

I don't have an Android phone, but I managed to connect my iPhone using a UART Bluetooth bridge. I'll make a video on it eventually, so stay tuned! In the meantime, don't forget to like and subscribe so you don't miss it.

That is fantastic

I show how to add sheets at the 6-minute mark.

Glad you found what you were looking for

Thanks!

Since the UM980 only needs to process data from one antenna, it can handle more satellites and generate faster positioning fixes. Additionally, the UM980 has about half the power consumption compared to the UM982, helping it stay cooler during operation. This makes the UM980 well-suited for base station applications.

You absolutely can, and I plan to make a video on this hopefully soon. Briefly, you can use the UDP/TCP socket function or the NTRIP Caster function to build a local setup. Alternatively, there are some Bluetooth options as well, which I hope to investigate and make a video on. Subscribe so you don’t miss when I upload them! :-)

@@oceanexplorationlab Thanks. Great videos. Subscribed!!

No, the XBee is Wi-Fi only. There are Bluetooth options, which I hope to make videos about in due course, so hang in there and subscribe to receive the notification.

@@oceanexplorationlab im using Bluetooth to send um980 command, if so, it would be possible to parrallel BT module and esp32 xbee to com2 for instance? Cuz im reserving com1 some device

If you use the ESP32 XBee code binary, yes, you will have to use a second microcontroller to display the coordinates on an OLED. Alternatively, you can try to modify the source code if you are comfortable with the Espressif IDF (I am not).

If you can do a video on this it would be of interest. Like the idea of a second esp32 or a raspberry pi. From reading last night looks like you get the uart from either TCP or USB.

It absolutely will, and if you share your correction on RTK2go, everyone within 20 km or so will be able to correct their location for free.

@@oceanexplorationlab can I rely on your advice in case I get stuck?:)

@@aivarg472 Relay is a strong word, but I will do my best to help when possible. I think the most important part is to nail down the position of your base station, either via Precise Point Positioning (PPP) or by using an established service like the one you have to find the initial position. Once you have the position, you set the location of your base station in the setup, and you should be good to go

@@oceanexplorationlab my thought was to make this base station mobile, so I could take it different places time to time.

@@oceanexplorationlab I agree “rely” is not the right word. Mostly meant if I could ask for advice if I’m lost at some point. But I think you made a very good manual;)

I would connect the SiK output to a serial monitor via a USB to serial adapter to see if the SiK provides the correct data to the UM98X.

@@oceanexplorationlab I have solved the issue. It turns out that Sick Telemetry Radio does not transmit data to the port if it is connected to a computer via USB. The LEDs are flashing, the console sees incoming data, but they do not go to the port. Thank you!

The module accepts RTCM corrections on all UART ports by default. In this setup, COM2 is configured to send NMEA comments to the ESP32. Since RTCM corrections are accepted on any port, there's no need for a dedicated command to specify reception on COM2.

@@oceanexplorationlab Thanks!

My “rover” was kept stationary hence survey mode gives better precision. For a more dynamic situation like a fast moving object, AUV mode is the appropriate setting.

Certainly, you can transmit coordinates through UART to a Bluetooth UART bridge and connect it to your phone. I plan to experiment with this when time permits and will post a video once I have figured it out.

@@oceanexplorationlab this would be of interest

This is fantastic! Do you mind sharing the name of your station? For example, mine is RTK_BASE_GN_1.

@@oceanexplorationlab BASE2_SG_ST1

@@oceanexplorationlab I listed mine as BASE2_SG_ST1, yours doesn't seem to be listed.

Thank you for pointing that out. I forgot to turn it back on after playing with it. It should be up and running now.

You bet!

Glad you enjoyed it!

Thank you 🙌

Gern geschehen

Hello! The coordinates of the base station (longitude and latitude) are provided by the GNSS module as part of the correction data. When configuring the UM980 as a base, you’ll need to provide those coordinates. In my video, I used the automatic determination of the base coordinates via the base time 60 2 2.5 (Self-optimizing Base Station Mode) command. I recommend consulting the Unicore Reference Commands Manual to understand how to provide the coordinates for your base using the "Fixed Base Station with Precise Coordinates" mode. As for connecting an OLED monitor, this won’t be possible unless you modify the source code of the XBee, which is available on GitHub. You would need to make changes there to integrate the OLED.

ChatGPT: I found several open-source projects that use the ESP32 and a GNSS module to build an NTP server: PPS-NTP Server: This project utilizes the ESP32 with a NEO-6MV2 GPS module. It operates as a Stratum-1 NTP server and achieves high precision by syncing with a GPS reference clock using the PPS (Pulse Per Second) signal. The server communicates over Ethernet or WiFi, with accuracy up to 1ms. The project is relatively easy to adapt for different ESP32 boards and is suitable for applications requiring accurate time synchronization. GitHub: github.com/DennisSc/PPS-ntp-server GPS NTP Server based on WT32-ETH01: This project combines an ESP32 module with a UBlox GPS module and Ethernet connectivity for creating a GPS-synced NTP server. It achieves precise time synchronization using the PPS signal and is configurable for WiFi or Ethernet operation. This project is a simple yet effective solution for setting up an NTP server​. GitHub: github.com/MuratovAS/gps-ntp-eth-esp32 Elektor mini NTP with ESP32: This project uses the ESP32 and GPS to act as an NTP server. It includes additional features like a display and an internal RTC, ensuring reliable timekeeping even when GPS is temporarily unavailable​. GitHub: github.com/ElektorLabs/180662-mini-NTP-ESP32

@@oceanexplorationlab thank you! I'll check them out . All the best! I really like your videos,very useful

I think www.ardusimple.com/product/ble-bridge/ will help with BLE. I haven't tried it yet but plan to make a video on it once I get it to work.

@@oceanexplorationlab I came across this one as well ruclips.net/video/0Q_4q1zU6Zc/видео.htmlsi=4UQtSwKcHDdCxnbK not sure if it’s relevance on the subject as I am definitely very fresh to all of this but having lots of fun trying to make it all work. Greatly appreciate your support! I will definitely check out the video. Now that I have a working RTK2go mount point, i want to duo like you pointed out, again not quite sure what I need for that. Have a great day, and again thanks for your support.

Let us know when you get it working. Good luck!

@@oceanexplorationlab Just found out this morning that ESP32 is using NTRIPv1, took me one day scratching my head :-), now my station is up and running in onocoy 🙂 (don't know what happened with RT2Go, couldn't setup my account) Just waiting your next video on ESP32 NTRIP duo 🙏 Thanks again in advance.

It will. The only difference is the external versus built-in PCB antenna.

The "UNKNOWN" indicates that the module has not calculated the GPS time, likely due to no satellite data. Do yourself a favor and purchase some high-quality pigtail connectors. Google: "MMCX to SMA Female"

@@oceanexplorationlab Thanks! I will.

The LC29H is a dual (L1 L5) band module, not a triple band module. Specifically for crypto, it will not optimize rewards. However, it may be interesting for a low-cost rover.

cool

None. Also, this is the only one I tested, so no suggestions otherwise.

It sounds like an exciting project. I have no current plans to create a video about waypoints, but ArduPilot is a tool you want to look into.

Hi I'm thinking of bulding stick rover as well. Can you tell me what kind of antenna you have purchased? I've saw that on aliexpress there are those regular ones and small black ones and I wonder is there any difference. The smaller one would be a better fit for stick RTK rover if they have the same specs I think. Also are using UM980?

​@@kuwerty2kuwerty23 You need to be careful; the small antennas are typically not triple-band and, therefore, will not give you the best results

I’m using a stk-107 for my base station and it gets great reception. For my rover I purchased the ag-35 antenna but it hasn’t arrived yet. I ordered it because the housing looks bigger I plan to house all the electronics inside of the antenna cover and just have a plug to supply battery power to it. Iv got all the code working and am able to communicate with the esp32 via Bluetooth on my iPhone. I’m still waiting on the um982 and rest of the parts to get here from china. I can sucessfully pass nmea and Rtcm messages and get an RTK fix.

​@@awolfe9069 What app are you using on your iPhone, is the coding part complicated to do?

Welcome!

Certainly, you can use the UDP/TCP socket functionality of the XBee for that purpose. I intend to publish a video on this topic shortly.

@@oceanexplorationlab absolutely please do and 1 more thing, with 982 and 2 antennas utilized can the rover determine altitude and axis rotation. I want this data for ROS in raspberry pi for SLAM. Ras pi is onboard on UAV. Thankyou.