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    Voxl2 Spektrum Receiver error

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    • Chase RileyC
      Chase Riley @Eric Katzfey
      last edited by Chase Riley

      @Eric-Katzfey I am also getting my hands on a DX6e for me to test. I should be able to try that in the morning. I still would like to figure out the DX8 as well though since we already have a bunch on hand in our lab.

      Eric KatzfeyE 1 Reply Last reply Reply Quote 0
      • Eric KatzfeyE
        Eric Katzfey ModalAI Team @Chase Riley
        last edited by

        @Chase-Riley Did you analyze the flight log?

        1 Reply Last reply Reply Quote 0
        • Eric KatzfeyE
          Eric Katzfey ModalAI Team @Chase Riley
          last edited by

          @Chase-Riley For the DX8 there are some configuration options on the transmitter. There is DSMX versus DSM2. That may need to be changed. Have you tried the different options yet?

          Chase RileyC 1 Reply Last reply Reply Quote 0
          • Chase RileyC
            Chase Riley @Eric Katzfey
            last edited by

            @Eric-Katzfey I have tried all of the options in the DX8. 11, 22 and DSM2, DSMX. They all seemed to produce the same results in the logs.

            1 Reply Last reply Reply Quote 0
            • Chase RileyC
              Chase Riley @Eric Katzfey
              last edited by

              @Eric-Katzfey Here is a voxl-px4 log while testing with a DX6e this morning. I was able to bind and calibrate no problem. I am just not able to control the motors. Flight mode and kill switch seem to be working fine. So seems to have the same behavior as the DX8 with a error in the log for 32 bytes and 0x00.

              INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf6 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf6 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf6 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf6 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf6 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf6 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf6 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf6 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf6 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
ERROR [muorb] SLPI: Spektrum RC: Invalid DSM frame. 32 bytes. Protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf6 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf6 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf5 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Armed by external command	
INFO  [logger] Start file log (type: full)
INFO  [logger] [logger] /data/px4/log/2024-01-24/19_14_37.ulg	
INFO  [logger] Opened full log file: /data/px4/log/2024-01-24/19_14_37.ulg
WARN  [mavlink] Event dropped (297, 65527)
WARN  [mavlink] Event dropped (297, 65527)
WARN  [mavlink] Dropped 65230 events (seq=65527)
WARN  [mavlink] Dropped 65230 events (seq=65527)
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf6 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
INFO  [muorb] SLPI: Spektrum RC: DSM message parsed successfully
INFO  [muorb] SLPI: Spektrum RC: Publishing input_rc
INFO  [muorb] SLPI: 0x00 0x00 0x8c 0x05 0x01 0x56 0x14 0x00
INFO  [muorb] SLPI: 0x1b 0xf6 0x2e 0xaa 0x3c 0x00 0x34 0x00
INFO  [muorb] SLPI: Spektrum RC: 16 bytes from UART, protocol byte 0x00
              Eric KatzfeyE 1 Reply Last reply Reply Quote 0
              • Eric KatzfeyE
                Eric Katzfey ModalAI Team @Chase Riley
                last edited by

                @Chase-Riley Huh, that still doesn't look right. When you calibrate you can move each stick and it shows properly in QGC? And listener input_rc shows the values moving properly when you move the sticks? What is the value of the parameter COM_RC_IN_MODE?

                Chase RileyC 1 Reply Last reply Reply Quote 0
                • Chase RileyC
                  Chase Riley @Eric Katzfey
                  last edited by

                  @Eric-Katzfey yes, each stick moves correctly in QGC. listener input_rc shows all sticks move correctly. I have tested with COM_RC_IN_MODE set to 0 and 2 and both yield the same results.

                  Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                  • Eric KatzfeyE
                    Eric Katzfey ModalAI Team @Chase Riley
                    last edited by

                    @Chase-Riley And they are mapped correctly such that throttle is on the stick you want? Can you do listener on manual_control_setpoint and see the throttle value move when you move the throttle stick?

                    Chase RileyC 1 Reply Last reply Reply Quote 0
                    • Chase RileyC
                      Chase Riley @Eric Katzfey
                      last edited by

                      @Eric-Katzfey RC_MAP_THROTTLE is set to Channel 3, RC_MAP_YAW is set to Channel 4, RC_MAP_ROLL is set to Channel 1, and RC_MAP_PITCH is set to Channel 2.

                      Moving the Throttle and Yaw stick while running listener manual_control_setpoint shows Throttle and Yaw changing values as it should. It also shows that Stick movement goes TRUE.

                      Eric KatzfeyE 2 Replies Last reply Reply Quote 0
                      • Eric KatzfeyE
                        Eric Katzfey ModalAI Team @Chase Riley
                        last edited by

                        @Chase-Riley Then at this point I can't think of how the RC could be related to the motors not spinning up. Can you arm, try to throttle up a few times, then disarm and send us the px4 flight log?

                        Chase RileyC 1 Reply Last reply Reply Quote 0
                        • Eric KatzfeyE
                          Eric Katzfey ModalAI Team @Chase Riley
                          last edited by

                          @Chase-Riley And you have tried to throttle up in manual flight mode?

                          1 Reply Last reply Reply Quote 0
                          • Chase RileyC
                            Chase Riley @Eric Katzfey
                            last edited by

                            @Eric-Katzfey I have tried to spin the motors in manual mode as well with no change. I have included a drop box link with the px4 flight log you requested.

                            https://www.dropbox.com/scl/fi/z5jnzbj44lnezjyhuzh8d/DX6e_Throttle_Test_log.ulg?rlkey=csjcwa2eu7n9g20xfah9bz7u3&dl=0

                            Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                            • Eric KatzfeyE
                              Eric Katzfey ModalAI Team @Chase Riley
                              last edited by

                              @Chase-Riley I'm having some others take a look at the log file. I'm kind of stumped at the moment.

                              Chase RileyC 1 Reply Last reply Reply Quote 0
                              • Chase RileyC
                                Chase Riley @Eric Katzfey
                                last edited by

                                @Eric-Katzfey Please let me know what you or your team find. This seems to be the last hurdle to getting me to flight testing. I have a shipping deadline to make on Friday with this system.

                                Eric KatzfeyE Alex KushleyevA 2 Replies Last reply Reply Quote 0
                                • Eric KatzfeyE
                                  Eric Katzfey ModalAI Team @Chase Riley
                                  last edited by

                                  @Chase-Riley Seems like ESC param issue. Alex is going to respond with some suggestions.

                                  1 Reply Last reply Reply Quote 0
                                  • Alex KushleyevA
                                    Alex Kushleyev ModalAI Team @Chase Riley
                                    last edited by Alex Kushleyev

                                    @Chase-Riley , we have discussed and the data on the PX4 side looks ok so far, which leads me to believe there may be an error in ESC params, specifically the RPM curve calibration pwm_vs_rpm_curve_a0, pwm_vs_rpm_curve_a1, pwm_vs_rpm_curve_a2.

                                    Please confirm that you performed the calibration (with propeller mounted on motor!) according to instructions here and updated the results (a0, a1, a2) params in your esc params xml file and sent it to the ESC ?

                                    Also double check the min_rpm and max_rpm in your esc params

                                    Alex KushleyevA 1 Reply Last reply Reply Quote 0
                                    • Alex KushleyevA
                                      Alex Kushleyev ModalAI Team @Alex Kushleyev
                                      last edited by

                                      Additionally, I saw that you use THR_MDL_FAC set to 0.8, which is what we use in our Sentinel drone. However, your propellers, if i am not mistaken, are much larger and this factor may need to be correct. I will double check how to calculate this factor correctly.

                                      Alex KushleyevA Chase RileyC 2 Replies Last reply Reply Quote 0
                                      • Alex KushleyevA
                                        Alex Kushleyev ModalAI Team @Alex Kushleyev
                                        last edited by Alex Kushleyev

                                        Another suggestion: you can test your ESC response with the following command:

                                        https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-esc/-/blob/dev/voxl-esc-tools/calibration.md?ref_type=heads#test-esc-using-rpm-commands (at the very bottom)

                                        (you can adjust your test command according to your motor / prop and min/max rpm, etc)

                                        Chase RileyC 1 Reply Last reply Reply Quote 0
                                        • Chase RileyC
                                          Chase Riley @Alex Kushleyev
                                          last edited by

                                          @Alex-Kushleyev I went and checked my .xml file and verified it was correct and re uploaded it to the ESC just to make sure. I had already run the calibration and updated the A0, A1, and A2.

                                          I did find that my min_rpm and max rpm were different in the xml file than I had them set in px4. That may have been the issue because control seems to be working fine now. Between re flashing the xml and changing the values one or both of the solutions solved the issue. I will contnue testing and report back with any issues. Thanks for jumping in and helping out.

                                          @Eric-Katzfey you said this morning that the DX6e data I sent over did not look correct. Is there something else we want to look into there. As I said before after looking at the logs the DX8 and the DX6e seem to behave the same way.

                                          Eric KatzfeyE 1 Reply Last reply Reply Quote 0
                                          • Chase RileyC
                                            Chase Riley @Alex Kushleyev
                                            last edited by

                                            @Alex-Kushleyev Do you have a rough idea of what this value should be set to? If you need to know my motor and prop combo send me an email. I would rather not disclose on the forums.

                                            Alex KushleyevA 1 Reply Last reply Reply Quote 0
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