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  4. GPS not working for Starling 2 Max

GPS not working for Starling 2 Max

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gpsstarling max
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  • N nuallaino

    @Bernhard Maybe our issues are related? See [my post].(https://forum.modalai.com/topic/3912/problem-acquiring-gps-satellites-possible-voxl2-board-emi?_=1731073406011)

    B Offline
    B Offline
    Bernhard
    Contributor
    wrote on last edited by
    #9

    @nuallaino that might be.
    But for us the GPS-sensor usually works, we only have problems when using 5G and/or video transmission.

    We will test if an external GPS-sensor fixes the situation.

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    • K Offline
      K Offline
      Kory4Drone
      wrote on last edited by
      #10

      Hello,

      Has there been any resolution on this? I have a brand new Starling 2 Max, with 5G and have let the drone sit for over an hour and no GPS.

      B 1 Reply Last reply
      0
      • K Kory4Drone

        Hello,

        Has there been any resolution on this? I have a brand new Starling 2 Max, with 5G and have let the drone sit for over an hour and no GPS.

        B Offline
        B Offline
        Bernhard
        Contributor
        wrote on last edited by
        #11

        @Kory4Drone sadly there has been no update.
        @Zachary-Lowell-0 is there anything ModalAI can do to support?

        groupoG 1 Reply Last reply
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        • B Bernhard

          @Kory4Drone sadly there has been no update.
          @Zachary-Lowell-0 is there anything ModalAI can do to support?

          groupoG Offline
          groupoG Offline
          groupo
          Regular
          wrote on last edited by
          #12

          @Bernhard I also have had GPS related issues with my sentinel drone that happens to have a 5G modem. I have two drones and one does work so we havent chased the other one down much. I will be interested to hear what steps the team will have for you

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          • Zachary Lowell 0Z Offline
            Zachary Lowell 0Z Offline
            Zachary Lowell 0
            ModalAI Team
            wrote on last edited by
            #13

            How far away is the gps from the 5g hat? Also have you leveraged faraday tape around the fuselage of your drone so the signal for the gps doesnt get interfered. Odds are the issue isnt from the 5g hat but from the USB3.0 port if you are leveraging. Multiple studies show there is quite a lot of interference from usb3.0 that can disrupt GPS - the solution for this is taking faraday tape and wrapping it around the right spots to cut the signal:

            Amazon.com

            favicon

            (www.amazon.com)

            groupoG B 2 Replies Last reply
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            • Zachary Lowell 0Z Zachary Lowell 0

              How far away is the gps from the 5g hat? Also have you leveraged faraday tape around the fuselage of your drone so the signal for the gps doesnt get interfered. Odds are the issue isnt from the 5g hat but from the USB3.0 port if you are leveraging. Multiple studies show there is quite a lot of interference from usb3.0 that can disrupt GPS - the solution for this is taking faraday tape and wrapping it around the right spots to cut the signal:

              Amazon.com

              favicon

              (www.amazon.com)

              groupoG Offline
              groupoG Offline
              groupo
              Regular
              wrote on last edited by
              #14

              @Zachary-Lowell-0 Are you talking about the USB-C used for ADB? (Maybe there is not the same on the Starling as there is on the Sentinel). Wouldn't that only apply if something was plugged in (i.e.) a cable for ADB

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              • Zachary Lowell 0Z Zachary Lowell 0

                How far away is the gps from the 5g hat? Also have you leveraged faraday tape around the fuselage of your drone so the signal for the gps doesnt get interfered. Odds are the issue isnt from the 5g hat but from the USB3.0 port if you are leveraging. Multiple studies show there is quite a lot of interference from usb3.0 that can disrupt GPS - the solution for this is taking faraday tape and wrapping it around the right spots to cut the signal:

                Amazon.com

                favicon

                (www.amazon.com)

                B Offline
                B Offline
                Bernhard
                Contributor
                wrote on last edited by
                #15

                @Zachary-Lowell-0 I don't know if there is another way to mount the 5G board (see picture - we sticked the antennas to the arms in the meantime).
                20240822_114213.jpg.

                We assumed since all of the components are official ModalAI products, that they would work together.

                James StrawsonJ 1 Reply Last reply
                0
                • B Bernhard

                  @Zachary-Lowell-0 I don't know if there is another way to mount the 5G board (see picture - we sticked the antennas to the arms in the meantime).
                  20240822_114213.jpg.

                  We assumed since all of the components are official ModalAI products, that they would work together.

                  James StrawsonJ Offline
                  James StrawsonJ Offline
                  James Strawson
                  ModalAI Team
                  wrote on last edited by
                  #16

                  @Bernhard When we released the 5G version of the Starling Max we also moved the GPS to the back of the drone and specified smaller LTE antennas which those landing gear were designed to fit. I'll reach out to you via PM regarding updating your Starling Max.

                  We just discovered a source of EMI which is the cable running to the optional Lepton sensor socket. For a number of reasons we've not offered Lepton as an option of Starling 2 Max yet so you can safely disconnect the 8-pin JST SH connector on the front left side of your camera breakout board next to the barometer cap. This will improve GPS performance. Please see picture below.

                  alt text

                  groupoG B 2 Replies Last reply
                  0
                  • James StrawsonJ James Strawson

                    @Bernhard When we released the 5G version of the Starling Max we also moved the GPS to the back of the drone and specified smaller LTE antennas which those landing gear were designed to fit. I'll reach out to you via PM regarding updating your Starling Max.

                    We just discovered a source of EMI which is the cable running to the optional Lepton sensor socket. For a number of reasons we've not offered Lepton as an option of Starling 2 Max yet so you can safely disconnect the 8-pin JST SH connector on the front left side of your camera breakout board next to the barometer cap. This will improve GPS performance. Please see picture below.

                    alt text

                    groupoG Offline
                    groupoG Offline
                    groupo
                    Regular
                    wrote on last edited by
                    #17

                    @James-Strawson is this sensor on the sentinel as well?

                    James StrawsonJ 1 Reply Last reply
                    0
                    • groupoG groupo

                      @James-Strawson is this sensor on the sentinel as well?

                      James StrawsonJ Offline
                      James StrawsonJ Offline
                      James Strawson
                      ModalAI Team
                      wrote on last edited by
                      #18

                      @groupo It is not on Sentinel.

                      1 Reply Last reply
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                      • James StrawsonJ James Strawson

                        @Bernhard When we released the 5G version of the Starling Max we also moved the GPS to the back of the drone and specified smaller LTE antennas which those landing gear were designed to fit. I'll reach out to you via PM regarding updating your Starling Max.

                        We just discovered a source of EMI which is the cable running to the optional Lepton sensor socket. For a number of reasons we've not offered Lepton as an option of Starling 2 Max yet so you can safely disconnect the 8-pin JST SH connector on the front left side of your camera breakout board next to the barometer cap. This will improve GPS performance. Please see picture below.

                        alt text

                        B Offline
                        B Offline
                        Bernhard
                        Contributor
                        wrote on last edited by
                        #19

                        @James-Strawson sadly that did not help.

                        B 1 Reply Last reply
                        0
                        • B Bernhard

                          @James-Strawson sadly that did not help.

                          B Offline
                          B Offline
                          Bernhard
                          Contributor
                          wrote on last edited by
                          #20

                          @James-Strawson, @Zachary-Lowell-0 can we expect an update in the near future?

                          ROBERT JUDDR 1 Reply Last reply
                          0
                          • B Bernhard

                            @James-Strawson, @Zachary-Lowell-0 can we expect an update in the near future?

                            ROBERT JUDDR Offline
                            ROBERT JUDDR Offline
                            ROBERT JUDD
                            wrote on last edited by
                            #21

                            @Bernhard @James-Strawson @Zachary-Lowell-0 @Alex-Kushleyev @nuallaino

                            I have a brand new Starling 2 Max (received 3 days ago), and I'm having the same problem described by nuallaino and Bernhard (no GPS even when outside for a long time).

                            My system info and results of px4-listener are pasted below.

                            I did unplug the Lepton 8-pin JST SH connector as suggested by James Strawson, but that had no effect.

                            Everything else seems to work fine (haven't tried 5G comm yet), but I'm hesitant to fly without GPS functioning properly, so at this point I'm stuck.

                            Any suggestions would be most welcome.

                            Thanks for your help !


                            system-image: 1.8.02-M0054-14.1a-perf
                            kernel: #1 SMP PREEMPT Mon Nov 11 22:47:44 UTC 2024 4.19.125
                            hw platform: M0054
                            mach.var: 1.0.1
                            voxl-suite: 1.4.1
                            current IP: wlan0: 10.0.0.19


                            voxl2:~$ px4-listener sensor_gps

                            TOPIC: sensor_gps
                            sensor_gps
                            timestamp: 841732144 (0.020669 seconds ago)
                            timestamp_sample: 0
                            time_utc_usec: 0
                            device_id: 11272245 (Type: 0xAC, SERIAL:6 (0x00))
                            lat: 0
                            lon: 0
                            alt: -17000
                            alt_ellipsoid: 0
                            s_variance_m_s: 999.00006
                            c_variance_rad: 3.14159
                            eph: 4294967.50000
                            epv: 3796926.25000
                            hdop: 99.99000
                            vdop: 99.99000
                            noise_per_ms: 64
                            jamming_indicator: 15
                            vel_m_s: 0.00000
                            vel_n_m_s: 0.00000
                            vel_e_m_s: 0.00000
                            vel_d_m_s: 0.00000
                            cog_rad: 0.00000
                            timestamp_time_relative: 0
                            heading: nan
                            heading_offset: 0.00000
                            heading_accuracy: 0.00000
                            rtcm_injection_rate: 0.00000
                            automatic_gain_control: 0
                            fix_type: 0
                            jamming_state: 0
                            spoofing_state: 1
                            vel_ned_valid: False
                            satellites_used: 0
                            selected_rtcm_instance: 0

                            voxl2:~$ px4-listener sensor_mag

                            TOPIC: sensor_mag
                            sensor_mag
                            timestamp: 861420482 (0.006257 seconds ago)
                            timestamp_sample: 861420007 (475 us before timestamp)
                            device_id: 527625 (Type: 0x08, I2C:1 (0x0D))
                            x: -0.04417
                            y: -0.32142
                            z: 0.42167
                            temperature: nan
                            error_count: 0
                            voxl2:~$

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