Setup simpleRTK3B with WiFi NTRIP Master
steve22 asked 4 weeks ago
what is the correct way to setup simpleRTK3B (Mosaic-X5 Triple Band (L1/L2/L5) RTK GNSS module) with WiFi NTRIP Master using NTRIP correction data via a smartphone hotspot.
What I have tried so far (using the webinterfaces for 192.168.3.1 and 192.168.4.1):
- enabled smartphone hotspot and mobile data
- configured NTRIP Master to connect to my smartphone hotspot -> success
- configured NTRIP Master NTRIP client
- configured simpleRTK3B: GGA-NMEA output stream at COM2 port at 100 msec
- configured simpleRTK3B: corrections -> COM2 -> Input Streams -> auto or RTCMv3
Problem:
NTRIP Master doesn’t seem to receive any correction data (RTCM3) via the configured NTRIP-client although NTRIP Master uses the smartphone hotspot. -> no correction data streams to simpleRTK3B.
Thank you.
Ardusimple Staff answered 4 weeks ago
- Is the connection to NTRIP caster successful? You can check that by setting a different LED color for this function (e.g. red). Or connect via serial terminal to POWER+XBEE at 115’200bps and you will see the text strings.
- Configure the Septentrio as input only “RTCM”. The text string from the WiFi are not liked by the “auto” mode of Septentrio.
- GGA at 10Hz is a bit too much for many casters, maybe they are kicking you out. Try with only 1 GGA every 1 second. If you need 10Hz in your application via WiFi, you can upgrade the WIFi to a beta firmware which filters this sending of messages to the server (v0.5.4 at https://github.com/nebkat/esp32-xbee/releases)
steve22 answered 4 weeks ago
thank you for the quick response.
After I changed the input stream to RTCMv3 and NMEA out stream (GGA) to 1 second, the connection to the NTRIP caster was successfull.
The Septentrio also reaches a RTK fix but after about a minute it falls back to DGPS.
In the XBee webinterface is only a steady NTRIP client out data stream but no steady in data stream (most of the time: 0 B/s in).
Does this mean that RTCM3 corrections go to the Septentrio but the GGA stream is not continiously sent to the NTRIP caster?
I have connected SimpleRTK3B to the smartphone via USB serial and used SW Maps.
Is there a way to connect the Septentrio via the WiFi-XBee-Hotspot (192.168.4.1) to the smartphone and get GNSS data to use e.g. with PinPoint-GIS?
Ardusimple Staff answered 4 weeks ago
About your later question, if Pinpoint GIS supports TCP/UDP gps receivers, then yes it should be possible via the IP of the WiFi + configured port.
steve22 answered 3 weeks ago
$PESP, NTRIP,CLI,DISCONNECTED,Hostname:Port,Mountpoint*7D
$PESP, NTRIP,CLI,CONNECTING,Hostname:Port,Mountpoint*62
$PESP, NTRIP,CLI,CONNECTED,Hostname:Port,Mountpoint*23
$PESP, NTRIP,CLI,DISCONNECTED,Hostname:Port,Mountpoint*7D
$PESP, NTRIP,CLI,CONNECTING,Hostname:Port,Mountpoint*62
$PESP, NTRIP,CLI,CONNECTED,Hostname:Port,Mountpoint*23
…
The connection lasts about 10 seconds and then breaks.
The same thing with different smartphone models.
The NTRIP correction works well with EMLID Reach RS2 (same parameter for NTRIP client; correction data also via smartphone hotspot and WiFi of Reach R2).
ArdusimpleThis logfile and exactly 10 seconds sounds like the time the caster waits for a GGA and if not received or not valid GGA it kicks you out of the server. Can you confirm:
1. That your 3B board is only outputting GGA and maximum 1 time per second?
2. Do you see GPS > XBEE blinking?
3. Can you confirm your 3B board has a position fix?
4. That your 3B board input on COM2 port is set to “RTCMv3” ?
5. Another good test to confirm the problem is only with the GPS settings, is to use a caster that doesn’t require GGA, like rtk2go. Can you try with an rtk2go caster and see if everything is ok?
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