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  3. VOXL ESC FPV 4-in-1 with Built-in Power Module (MDK-M0138) Issues

VOXL ESC FPV 4-in-1 with Built-in Power Module (MDK-M0138) Issues

Scheduled Pinned Locked Moved ESCs
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  • Eric KatzfeyE Offline
    Eric KatzfeyE Offline
    Eric Katzfey
    ModalAI Team
    wrote last edited by
    #2

    What software versions are you using? Can you please create a PX4 log and share that via https://logs.px4.io/? Since logging normally doesn't start until you arm the drone you can force the logger to start and stop. For example, from the adb shell you can use px4-logger on to start a log and then px4-logger off to stop the log. Can you also paste the outputs from the detect / scan? Also review this other post: https://forum.modalai.com/topic/4833/throttle-doesnt-work/7

    J 1 Reply Last reply
    0
    • Eric KatzfeyE Eric Katzfey

      What software versions are you using? Can you please create a PX4 log and share that via https://logs.px4.io/? Since logging normally doesn't start until you arm the drone you can force the logger to start and stop. For example, from the adb shell you can use px4-logger on to start a log and then px4-logger off to stop the log. Can you also paste the outputs from the detect / scan? Also review this other post: https://forum.modalai.com/topic/4833/throttle-doesnt-work/7

      J Offline
      J Offline
      jbiscan21
      Contributor
      wrote last edited by
      #3

      @Eric-Katzfey Attached below. I misspoke, it appears detect fails.

      Here is the link: PX4 Logs

      voxl2-test-fixture (TF-M0054):/$ voxl-version 
      ────────────────────────────────────────────────────────────────────────────────
      system-image: 1.8.06-M0054-14.1a-perf
      kernel:       #1 SMP PREEMPT Wed Oct 22 04:13:18 UTC 2025 4.19.125
      ────────────────────────────────────────────────────────────────────────────────
      hw platform:  M0054
      mach.var:     1.0.1
      SKU:          TF-M0054-4-V1-C11
      ────────────────────────────────────────────────────────────────────────────────
      voxl-suite:   1.6.3
      ────────────────────────────────────────────────────────────────────────────────
      Packages:
      Repo:  http://voxl-packages.modalai.com/ ./dists/qrb5165/sdk-1.6/binary-arm64/
      Last Updated: 2026-08-06 19:57:23
      List:
      libfc-sensor                   1.0.9
      libmodal-cv                    0.6.0
      libmodal-exposure              0.1.4
      libmodal-flow                  1.0.3
      libmodal-journal               0.2.7
      libmodal-json                  0.4.8
      libmodal-pipe                  2.14.11
      libqrb5165-io                  0.6.3
      libvoxl-cci-direct             0.3.3
      libvoxl-codec                  0.0.2
      libvoxl-cutils                 0.1.6
      modalai-slpi                   1.2.2
      mv-voxl                        0.1-r0
      qrb5165-bind                   0.1-r0
      qrb5165-dfs-server             0.2.0
      qrb5165-mini-tof-server        0.2.2
      qrb5165-rangefinder-server     0.1.6
      qrb5165-slpi-test-sig          01-r0
      qrb5165-tflite                 2.17.2
      voxl-bind-spektrum             0.1.1
      voxl-camera-calibration        0.6.1
      voxl-camera-server             2.2.19
      voxl-ceres-solver              2:2.0.0-2
      voxl-configurator              1.1.5
      voxl-cpu-monitor               0.7.7
      voxl-docker-support            1.3.1
      voxl-elrs                      1.1.0
      voxl-esc                       1.6.3
      voxl-esptool                   0.2.0
      voxl-feature-tracker           0.5.2
      voxl-flow-server               0.3.6
      voxl-gphoto2-server            0.0.10
      voxl-imu-server                2.0.1
      voxl-io-server                 0.0.8
      voxl-jpeg-turbo                2.1.3-7
      voxl-lepton-server             1.3.3
      voxl-lepton-tracker            0.0.4
      voxl-libgeographic             1.0.0
      voxl-libgphoto2                0.0.4
      voxl-libuvc                    1.0.7
      voxl-logger                    0.6.1
      voxl-mavcam-manager            0.6.0
      voxl-mavlink                   0.1.6
      voxl-mavlink-server            1.4.14
      voxl-modem                     1.2.3
      voxl-mongoose                  7.19.0
      voxl-mpa-to-ros                0.3.9
      voxl-mpa-tools                 1.5.6
      voxl-nano-tracker              0.1.7
      voxl-open-vins-server          0.6.0
      voxl-opencv                    4.5.5-3
      voxl-osd                       0.3.8
      voxl-portal                    0.8.7
      voxl-px4                       1.14.0-2.0.133
      voxl-px4-params                0.9.0
      voxl-qvio-server               1.2.3
      voxl-remote-id                 0.0.9
      voxl-reset-slpi                0.0.1
      voxl-state-estimator           0.0.6
      voxl-streamer                  0.8.0
      voxl-suite                     1.6.3
      voxl-tag-detector              0.1.0
      voxl-tflite-server             0.5.1
      voxl-utils                     2.0.2
      voxl-uvc-server                0.1.7
      voxl-vision-hub                1.9.21
      voxl-vtx                       2.0.2
      voxl-wavemux                   0.0.3
      voxl2-io                       0.0.3
      voxl2-security-hardening-utls  1.0-r0
      voxl2-system-image             1.8.06-r0
      voxl2-wlan                     1.0-r0
      ────────────────────────────────────────────────────────────────────────────────
      
      voxl2-test-fixture (TF-M0054):/$ voxl-esc scan
      enabling bridge
      detected voxl-px4 is enabled
      Removed /etc/systemd/system/multi-user.target.wants/voxl-px4.service.
      detected voxl-px4 is running, stopping it now
      Sending kill slpi command!
      bridge enabled
      Detected Python version : 3.6.9 (default, May 22 2025, 20:54:22) 
      [GCC 8.4.0]
      Found voxl-esc tools bin version: 1.10
      VOXL Platform: QRB5165
      INFO: Scanning for ESC firmware: /dev/slpi-uart-2, baud: 2000000
      Sending library name request: libslpi_qrb5165_io.so
      Sending initialization request
      INFO: ESC(s) detected on port: /dev/slpi-uart-2, baud rate: 2000000, protocol: firmware
      
      
      INFO: ESC Information:
      INFO: ---------------------
      	ID         : 0
      	Board      : version 42: ModalAi 4-in-1 ESC (M0138-1)
      	UID        : 0x203837304848570400440022
      	Firmware   : version  39.25, hash a58f5f6f
      	Bootloader : version    187, hash aad89d63
      
      	ID         : 1
      	Board      : version 42: ModalAi 4-in-1 ESC (M0138-1)
      	UID        : 0x203837304848570300310055
      	Firmware   : version  39.25, hash a58f5f6f
      	Bootloader : version    187, hash aad89d63
      
      	ID         : 2
      	Board      : version 42: ModalAi 4-in-1 ESC (M0138-1)
      	UID        : 0x2038373048485705003A003F
      	Firmware   : version  39.25, hash a58f5f6f
      	Bootloader : version    187, hash aad89d63
      
      	ID         : 3
      	Board      : version 42: ModalAi 4-in-1 ESC (M0138-1)
      	UID        : 0x203837304848570400440025
      	Firmware   : version  39.25, hash a58f5f6f
      	Bootloader : version    187, hash aad89d63
      
      ---------------------
      successfully pinged ESCs
      disabling bridge
      Sending kill slpi command!
      re-enabling voxl-px4
      Created symlink /etc/systemd/system/multi-user.target.wants/voxl-px4.service → /etc/systemd/system/voxl-px4.service.
      restarting voxl-px4
      bridge disabled
      voxl2-test-fixture (TF-M0054):/$ voxl-esc detect 
      enabling bridge
      detected voxl-px4 is enabled
      Removed /etc/systemd/system/multi-user.target.wants/voxl-px4.service.
      detected voxl-px4 is running, stopping it now
      Sending kill slpi command!
      bridge enabled
      Received standard error event SNS_STD_ERROR_NOT_SUPPORTED
      Couldn't configure flight_controller sensor
      ERROR:   fc_sensor_initialize failed
      ERROR:   Failed to initialize slpi
      ERROR:   Encountered error while initializing bus 12
      [ERROR] No ESCs detected
      disabling bridge
      Sending kill slpi command!
      re-enabling voxl-px4
      Created symlink /etc/systemd/system/multi-user.target.wants/voxl-px4.service → /etc/systemd/system/voxl-px4.service.
      restarting voxl-px4
      bridge disabled
      EXITING VOXL-ESC WITH ERROR
      voxl2-test-fixture (TF-M0054):/$ 
      
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      • Alex KushleyevA Offline
        Alex KushleyevA Offline
        Alex Kushleyev
        ModalAI Team
        wrote last edited by
        #4

        @jbiscan21 , have you tried the actuator test feature in QGC? make sure to remove propellers for safety.

        Also, as px4 starts up, the voxl-esc px4 driver will detect the ESCs and print some information, similar to what the CLI tool does without PX4. You can run voxl-px4 in foreground and check. voxl-px4 -d

        Alex

        J 1 Reply Last reply
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        • Alex KushleyevA Offline
          Alex KushleyevA Offline
          Alex Kushleyev
          ModalAI Team
          wrote last edited by Alex Kushleyev
          #5

          example of voxl-px4 driver output when running voxl-px4 -d:

          ...
          Starting VOXL ESC driver
          INFO  [qshell] Send cmd: 'voxl_esc start'
          INFO  [muorb] [uORB] Marking DeviceNode(qshell_req) as advertised in process_remote_topic
          INFO  [muorb] [qshell] qshell gotten: voxl_esc start
          INFO  [muorb] [qshell]   arg0 = 'voxl_esc'
          INFO  [muorb] [qshell]   arg1 = 'start'
          INFO  [uORB] Advertising remote topic actuator_outputs
          INFO  [muorb] [voxl_esc] Starting VOXL ESC driver
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_CONFIG: 1
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_MODE: 0
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_BAUD: 2000000
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_FUNC1: 102
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_FUNC2: 103
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_FUNC3: 101
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_FUNC4: 104
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_SDIR1: 0
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_SDIR2: 0
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_SDIR3: 0
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_SDIR4: 0
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_PWR_MIN: 0.050000
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_RPM_MIN: 2000
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_RPM_MAX: 12000
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_PERC: 90
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_DEAD: 20
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_EXPO: 35
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_MINF: 0.150000
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_COSP: 0.990000
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_VLOG: 1
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_PUB_BST: 1
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_WARN: 0
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_OVER: 0
          INFO  [muorb] [voxl_esc] Params: GPIO_CTL_CH: 0
          INFO  [muorb] [voxl_esc] Params: VOXL_ESC_CMD: 0
          INFO  [muorb] [qshell] Ok executing command: voxl_esc start
          INFO  [muorb] [voxl_esc] Opening UART ESC device 2, baud rate 2000000
          INFO  [muorb] [voxl_esc] Successfully opened UART ESC device
          INFO  [muorb] [voxl_esc] Detecting ESCs...
          INFO  [muorb] [voxl_esc] 	ESC ID     : 0
          INFO  [muorb] [voxl_esc] 	Board Type : 40: ModalAi 4-in-1 ESC (M0129-3)
          INFO  [muorb] [voxl_esc] 	Unique ID  : 0x2039333557555313000F0036
          INFO  [muorb] [voxl_esc] 	Firmware   : version   39, hash 9c6233d6
          INFO  [muorb] [voxl_esc] 	Bootloader : version  184, hash 10bf24c8
          INFO  [muorb] [voxl_esc] 	Reply time : 735us
          INFO  [muorb] [voxl_esc] VOXL_ESC:
          INFO  [muorb] [voxl_esc] 	ESC ID     : 1
          INFO  [muorb] [voxl_esc] 	Board Type : 40: ModalAi 4-in-1 ESC (M0129-3)
          INFO  [muorb] [voxl_esc] 	Unique ID  : 0x2039333557555313000F0032
          INFO  [muorb] [voxl_esc] 	Firmware   : version   39, hash 9c6233d6
          INFO  [muorb] [voxl_esc] 	Bootloader : version  184, hash 10bf24c8
          INFO  [muorb] [voxl_esc] 	Reply time : 721us
          INFO  [muorb] [voxl_esc] VOXL_ESC:
          INFO  [muorb] [voxl_esc] 	ESC ID     : 2
          INFO  [muorb] [voxl_esc] 	Board Type : 40: ModalAi 4-in-1 ESC (M0129-3)
          INFO  [muorb] [voxl_esc] 	Unique ID  : 0x2039333557555313000F0034
          INFO  [muorb] [voxl_esc] 	Firmware   : version   39, hash 9c6233d6
          INFO  [muorb] [voxl_esc] 	Bootloader : version  184, hash 10bf24c8
          INFO  [muorb] [voxl_esc] 	Reply time : 104us
          INFO  [muorb] [voxl_esc] VOXL_ESC:
          INFO  [muorb] [voxl_esc] 	ESC ID     : 3
          INFO  [muorb] [voxl_esc] 	Board Type : 40: ModalAi 4-in-1 ESC (M0129-3)
          INFO  [muorb] [voxl_esc] 	Unique ID  : 0x2039333557555313000F0038
          INFO  [muorb] [voxl_esc] 	Firmware   : version   39, hash 9c6233d6
          INFO  [muorb] [voxl_esc] 	Bootloader : version  184, hash 10bf24c8
          INFO  [muorb] [voxl_esc] 	Reply time : 727us
          INFO  [muorb] [voxl_esc] VOXL_ESC:
          INFO  [muorb] [voxl_esc] Use extended rpm packet : 1
          INFO  [muorb] [voxl_esc] All ESCs successfully detected
          ...
          
          1 Reply Last reply
          0
          • Alex KushleyevA Alex Kushleyev

            @jbiscan21 , have you tried the actuator test feature in QGC? make sure to remove propellers for safety.

            Also, as px4 starts up, the voxl-esc px4 driver will detect the ESCs and print some information, similar to what the CLI tool does without PX4. You can run voxl-px4 in foreground and check. voxl-px4 -d

            Alex

            J Offline
            J Offline
            jbiscan21
            Contributor
            wrote last edited by
            #6

            @Alex-Kushleyev

            Hello, using the actuator sliders in QGC results in the same behavior. The motors just spin at the same constant (arming) speed. Here are the results of voxl-px4 -d

            Starting VOXL ESC driver
            INFO  [qshell] Send cmd: 'voxl_esc start'
            INFO  [muorb] [uORB] Marking DeviceNode(qshell_req) as advertised in process_remote_topic
            INFO  [muorb] [qshell] qshell gotten: voxl_esc start
            INFO  [muorb] [qshell]   arg0 = 'voxl_esc'
            INFO  [muorb] [qshell]   arg1 = 'start'
            INFO  [uORB] Advertising remote topic actuator_outputs
            INFO  [muorb] [voxl_esc] Starting VOXL ESC driver
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_CONFIG: 1
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_MODE: 0
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_BAUD: 2000000
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_FUNC1: 101
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_FUNC2: 104
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_FUNC3: 102
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_FUNC4: 103
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_SDIR1: 0
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_SDIR2: 0
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_SDIR3: 0
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_SDIR4: 0
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_PWR_MIN: 0.050000
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_RPM_MIN: 3000
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_RPM_MAX: 30653
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_PERC: 90
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_DEAD: 20
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_EXPO: 35
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_MINF: 0.150000
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_COSP: 0.990000
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_VLOG: 1
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_PUB_BST: 1
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_WARN: 0
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_T_OVER: 0
            INFO  [muorb] [voxl_esc] Params: GPIO_CTL_CH: 0
            INFO  [muorb] [voxl_esc] Params: VOXL_ESC_CMD: 0
            INFO  [muorb] [qshell] Ok executing command: voxl_esc start
            INFO  [muorb] [voxl_esc] Opening UART ESC device 2, baud rate 2000000
            INFO  [muorb] [voxl_esc] Successfully opened UART ESC device
            INFO  [muorb] [voxl_esc] Detecting ESCs...
            INFO  [muorb] [voxl_esc] 	ESC ID     : 0
            INFO  [muorb] [voxl_esc] 	Board Type : 42: ModalAi 4-in-1 ESC (M0138-1)
            INFO  [qshell] qshell return value timestamp: 299177998, local time: 299182990
            INFO  [muorb] [voxl_esc] 	Unique ID  : 0x203837304848570400440022
            INFO  [muorb] [voxl_esc] 	Firmware   : version   39, hash a58f5f6f
            INFO  [muorb] [voxl_esc] 	Bootloader : version  187, hash aad89d63
            INFO  [muorb] [voxl_esc] 	Reply time : 709us
            INFO  [muorb] [voxl_esc] VOXL_ESC:
            INFO  [muorb] [voxl_esc] 	ESC ID     : 1
            INFO  [muorb] [voxl_esc] 	Board Type : 42: ModalAi 4-in-1 ESC (M0138-1)
            INFO  [muorb] [voxl_esc] 	Unique ID  : 0x203837304848570300310055
            INFO  [muorb] [voxl_esc] 	Firmware   : version   39, hash a58f5f6f
            INFO  [muorb] [voxl_esc] 	Bootloader : version  187, hash aad89d63
            INFO  [muorb] [voxl_esc] 	Reply time : 724us
            INFO  [muorb] [voxl_esc] VOXL_ESC:
            INFO  [muorb] [voxl_esc] 	ESC ID     : 2
            Starting CRSF RC driver
            INFO  [muorb] [voxl_esc] 	Board Type : 42: ModalAi 4-in-1 ESC (M0138-1)
            INFO  [muorb] [voxl_esc] 	Unique ID  : 0x2038373048485705003A003F
            INFO  [muorb] [voxl_esc] 	Firmware   : version   39, hash a58f5f6f
            INFO  [muorb] [voxl_esc] 	Bootloader : version  187, hash aad89d63
            INFO  [muorb] [voxl_esc] 	Reply time : 716us
            INFO  [muorb] [voxl_esc] VOXL_ESC:
            INFO  [muorb] [voxl_esc] 	ESC ID     : 3
            INFO  [muorb] [voxl_esc] 	Board Type : 42: ModalAi 4-in-1 ESC (M0138-1)
            INFO  [muorb] [voxl_esc] 	Unique ID  : 0x203837304848570400440025
            INFO  [muorb] [voxl_esc] 	Firmware   : version   39, hash a58f5f6f
            INFO  [muorb] [voxl_esc] 	Bootloader : version  187, hash aad89d63
            INFO  [muorb] [voxl_esc] 	Reply time : 706us
            INFO  [muorb] [voxl_esc] VOXL_ESC:
            INFO  [muorb] [voxl_esc] Use extended rpm packet : 1
            INFO  [muorb] [voxl_esc] All ESCs successfully detected
            INFO  [uORB] Advertising remote topic actuator_outputs_debug
            INFO  [uORB] Advertising remote topic esc_status
            
            
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            • J Offline
              J Offline
              jbiscan21
              Contributor
              wrote last edited by
              #7

              @alex-kushleyev @eric-katzfey
              One thing I noticed, if I change ESC Command Type from RPM to PWM in the actuators tab, then I can increase the motor speeds

              1 Reply Last reply
              0
              • Alex KushleyevA Offline
                Alex KushleyevA Offline
                Alex Kushleyev
                ModalAI Team
                wrote last edited by Alex Kushleyev
                #8

                @jbiscan21 , can you also share the esc params that you uploaded to the ESC after ESC calibration ? I am assuming you went through this procedure : https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-esc/-/blob/master/voxl-esc-tools/calibration.md

                From the log I see that all 4 motors spun up but the rpm is capped at about 2200 rpm, which may mean you ESC tuning params are incorrect.

                Also note that after arming, your drone immediately commands about 10000 rpm, which is not great, because that would be a sudden jump.. you may want to check your flight mode to avoid this.

                1d5d52fc-2b98-4178-b5c9-0d66e79cbf78-image.jpeg

                a7217253-aca1-474e-ab18-a019bd517185-image.jpeg

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                • J Offline
                  J Offline
                  jbiscan21
                  Contributor
                  wrote last edited by
                  #9

                  Quick side questions @alex-kushleyev @eric-katzfey

                  Have you ever calibrated PWM control with these drones or is that not advised?

                  I am a bit confused on the RPM calibration process. It appears to me that the RPM control is closed loop, but one thing that does not make sense to me is the testing with props on. I understand that props on will simulate aerodynamic load for calibration but wouldn't the load be different in flight too? Or is the idea that props on calibration is closer to flight load than props off?

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                  • Alex KushleyevA Alex Kushleyev

                    @jbiscan21 , can you also share the esc params that you uploaded to the ESC after ESC calibration ? I am assuming you went through this procedure : https://gitlab.com/voxl-public/voxl-sdk/utilities/voxl-esc/-/blob/master/voxl-esc-tools/calibration.md

                    From the log I see that all 4 motors spun up but the rpm is capped at about 2200 rpm, which may mean you ESC tuning params are incorrect.

                    Also note that after arming, your drone immediately commands about 10000 rpm, which is not great, because that would be a sudden jump.. you may want to check your flight mode to avoid this.

                    1d5d52fc-2b98-4178-b5c9-0d66e79cbf78-image.jpeg

                    a7217253-aca1-474e-ab18-a019bd517185-image.jpeg

                    J Offline
                    J Offline
                    jbiscan21
                    Contributor
                    wrote last edited by
                    #10

                    @Alex-Kushleyev Yes I want through that procedure. Here are my params:

                    <?xml version="1.0" encoding="UTF-8"?>
                    
                    <!-- Copyright (c) 2020 ModalAI Inc.
                    
                    Redistribution and use in source and binary forms, with or without
                    modification, are permitted provided that the following conditions are met:
                    
                    1. Redistributions of source code must retain the above copyright notice,
                       this list of conditions and the following disclaimer.
                    
                    2. Redistributions in binary form must reproduce the above copyright notice,
                       this list of conditions and the following disclaimer in the documentation
                       and/or other materials provided with the distribution.
                    
                    3. Neither the name of the copyright holder nor the names of its contributors
                       may be used to endorse or promote products derived from this software
                       without specific prior written permission.
                    
                    4. The Software is used solely in conjunction with devices provided by
                       ModalAI Inc.
                    
                    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
                    AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                    ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
                    LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                    CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                    SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                    INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                    CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                    POSSIBILITY OF SUCH DAMAGE.
                    
                    For a license to use on non-ModalAI hardware, please contact license@modalai.com -->
                    
                    <EscParameters>
                    
                      <IdParams>
                        <param name="id"              value="127"/>  <!-- 0-7 .. 127 means use hardware ID pins to read ID-->
                        <param name="dir"             value="2"/>    <!-- 0=fwd, 1=rev, 2=fwd id-based, 3=rev id-based -->
                      </IdParams>
                    
                      <UartParams>
                        <param name="protocol_version" value="2"/>          <!-- reserved for future use -->
                        <param name="input_mode"       value="0"/>          <!-- reserved for future use -->
                        <param name="baud_rate"        value="2000000"/>     <!-- communication bit rate -->
                        <param name="char_timeout_ns"  value="0"/>          <!-- not used -->
                        <param name="cmd_timeout_ns"   value="100000000"/>  <!-- timeout for incoming commands before ESC will stop the motor -->
                      </UartParams>
                    
                      <TuneParams>
                        <param name="pwm_frequency"       value="48000"/>  <!-- switching freqency of PWM signal going to motors. 24Khz and 48Khz are only options for now -->
                        <param name="vbat_nominal_mv"     value="22200"/>  <!-- used for sanity checking and limiting of voltage-dependent funcions -->
                        <param name="num_cycles_per_rev"  value="7"/>      <!-- number of pole pairs in the motor. used for converting electrical frequency to mechanical rpm -->
                        <param name="min_rpm"             value="3020"/>   <!-- WARNING: not tuned. minimum RPM that will be attempted, otherwise capped -->
                        <param name="max_rpm"             value="26311"/>   <!-- WARNING: not tuned. maximum RPM that will be attempted, otherwise capped -->
                        <param name="min_pwm"             value="75"/>     <!-- cap for minimum power to be ever applied. min is 75  -->
                        <param name="max_pwm"             value="9999"/>    <!-- cap for maximum power to be ever applied. max is 999 -->
                        <param name="pwm_vs_rpm_curve_a0" value="-92.6079829269"/>    <!-- this is actually motor_voltage vs rpm curve.. using legacy naming -->
                        <param name="pwm_vs_rpm_curve_a1" value="0.813657468926"/>    <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                        <param name="pwm_vs_rpm_curve_a2" value="2.69099700436e-06"/>    <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                        <param name="kp"                  value="0"/>      <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                        <param name="ki"                  value="0"/>      <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                        <param name="max_kpe"             value="0"/>      <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                        <param name="max_kie"             value="0"/>      <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                        <param name="max_rpm_delta"       value="0"/>      <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                    
                        <param name="spinup_type"         value="1"/>      <!-- 0: traditional, 1: sinusoidal -->
                        <param name="spinup_power"        value="60"/>     <!-- power used to during spin-up procedure -->
                        <param name="latch_power"         value="60"/>    <!-- power used during latching stage of spin-up (out of 999)-->
                        <param name="spinup_power_ramp"   value="8"/>      <!-- it will take ( 4096 / (spinup_power_ramp*10000) ) seconds to ramp sinusoidal start-up power from 0 to spinup_power -->
                        <param name="spinup_rpm_target"   value="2000"/>   <!-- Desired RPM at the end of the sinusoidal spin-up procedure -->
                        <param name="spinup_time_ms"      value="500"/>   <!-- Duration of the sinusoidal spin-up procedure -->
                        <param name="spinup_bemf_comp"    value="1"/>      <!-- 0: disable, 1:enable back-emf compensation in sinusoidal spin-up procedure -->
                        <param name="motor_kv"            value="2300"/>   <!-- kV value of the motor. used in back-emf compensation during spin-up -->
                    
                        <param name="min_num_cross_for_closed_loop" value="10"/>  <!-- exit latching mode of fixed power after this number of zero crossings -->
                        <param name="protection_stall_check_rpm" value="1000"/> <!-- if motor spins below this RPM, stall check will trigger and stop / restart the motor -->
                    
                        <param name="brake_to_stop"       value="0"/>             <!-- apply brake when stopping motor (or not) -->
                        <param name="stall_timeout_ns"    value="20000000"/>      <!-- after spin-up, if no zero crossing is not detected for this amount of time, motor is considered stalled -->
                        <param name="require_reset_if_stalled"      value="0"/>   <!-- require sending an array of zero commands to reset before next spin-up, if motor stalled -->
                    
                        <param name="tone_freqs"          value="[200, 215, 225, 250, 0,0,0,0, 0,0,0,0]"/> <!-- 200 is 2000Hz, max 255 -->
                        <param name="tone_durations"      value="[3,     0,    0,  0,  0,0,0,0, 0,0,0,0]"/> <!-- duration of each tone in units of 10 milli-seconds. Poor naming!!! -->
                        <param name="tone_powers"         value="[20,    0,    0,  0,  0,0,0,0, 0,0,0,0]"/> <!-- max is 255 -->
                    
                        <param name="dt_threshold_ns"       value="150000"/>      <!-- during start up, ignore inter-commutation times less than this val, probably noise -->
                        <param name="max_dt_ns"             value="2500000"/>     <!-- min and max values for time between two commutations. these are used as caps -->
                        <param name="min_dt_ns"             value="10000"/>
                        <param name="dt_bootstrap_ns"       value="2000000"/>     <!-- filter bootstrap value for commutation dt during start up -->
                    
                        <param name="spinup_stall_dt_ns"    value="6000000"/>     <!-- during spin-up, if no zero crossing is not detected for this amount of time, motor is considered stalled -->
                        <param name="spinup_stall_check_ns" value="30000000"/>    <!-- time after beginning of spinup to start checking for spinup stall -->
                    
                        <param name="alignment_time_ns"     value="0"/>           <!-- alignment time before spin-up -->
                        <param name="timing_advance"        value="0"/>
                        <param name="sense_advance"         value="0"/>
                    
                        <param name="demag_timing"          value="0"/>       <!-- unused -->
                        <param name="led_config"            value="0"/>       <!-- 0: enable status LEDs in bootloader and firmware, 1: disable LEDs in boot and firmware: 2: disable LEDs only in firmware. need FW 39.25 or later -->
                    
                      </TuneParams>
                    </EscParameters>
                    
                    
                    J 1 Reply Last reply
                    0
                    • J jbiscan21

                      @Alex-Kushleyev Yes I want through that procedure. Here are my params:

                      <?xml version="1.0" encoding="UTF-8"?>
                      
                      <!-- Copyright (c) 2020 ModalAI Inc.
                      
                      Redistribution and use in source and binary forms, with or without
                      modification, are permitted provided that the following conditions are met:
                      
                      1. Redistributions of source code must retain the above copyright notice,
                         this list of conditions and the following disclaimer.
                      
                      2. Redistributions in binary form must reproduce the above copyright notice,
                         this list of conditions and the following disclaimer in the documentation
                         and/or other materials provided with the distribution.
                      
                      3. Neither the name of the copyright holder nor the names of its contributors
                         may be used to endorse or promote products derived from this software
                         without specific prior written permission.
                      
                      4. The Software is used solely in conjunction with devices provided by
                         ModalAI Inc.
                      
                      THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
                      AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                      IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                      ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
                      LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                      CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                      SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                      INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                      CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                      ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                      POSSIBILITY OF SUCH DAMAGE.
                      
                      For a license to use on non-ModalAI hardware, please contact license@modalai.com -->
                      
                      <EscParameters>
                      
                        <IdParams>
                          <param name="id"              value="127"/>  <!-- 0-7 .. 127 means use hardware ID pins to read ID-->
                          <param name="dir"             value="2"/>    <!-- 0=fwd, 1=rev, 2=fwd id-based, 3=rev id-based -->
                        </IdParams>
                      
                        <UartParams>
                          <param name="protocol_version" value="2"/>          <!-- reserved for future use -->
                          <param name="input_mode"       value="0"/>          <!-- reserved for future use -->
                          <param name="baud_rate"        value="2000000"/>     <!-- communication bit rate -->
                          <param name="char_timeout_ns"  value="0"/>          <!-- not used -->
                          <param name="cmd_timeout_ns"   value="100000000"/>  <!-- timeout for incoming commands before ESC will stop the motor -->
                        </UartParams>
                      
                        <TuneParams>
                          <param name="pwm_frequency"       value="48000"/>  <!-- switching freqency of PWM signal going to motors. 24Khz and 48Khz are only options for now -->
                          <param name="vbat_nominal_mv"     value="22200"/>  <!-- used for sanity checking and limiting of voltage-dependent funcions -->
                          <param name="num_cycles_per_rev"  value="7"/>      <!-- number of pole pairs in the motor. used for converting electrical frequency to mechanical rpm -->
                          <param name="min_rpm"             value="3020"/>   <!-- WARNING: not tuned. minimum RPM that will be attempted, otherwise capped -->
                          <param name="max_rpm"             value="26311"/>   <!-- WARNING: not tuned. maximum RPM that will be attempted, otherwise capped -->
                          <param name="min_pwm"             value="75"/>     <!-- cap for minimum power to be ever applied. min is 75  -->
                          <param name="max_pwm"             value="9999"/>    <!-- cap for maximum power to be ever applied. max is 999 -->
                          <param name="pwm_vs_rpm_curve_a0" value="-92.6079829269"/>    <!-- this is actually motor_voltage vs rpm curve.. using legacy naming -->
                          <param name="pwm_vs_rpm_curve_a1" value="0.813657468926"/>    <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                          <param name="pwm_vs_rpm_curve_a2" value="2.69099700436e-06"/>    <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                          <param name="kp"                  value="0"/>      <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                          <param name="ki"                  value="0"/>      <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                          <param name="max_kpe"             value="0"/>      <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                          <param name="max_kie"             value="0"/>      <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                          <param name="max_rpm_delta"       value="0"/>      <!-- WARNING: RPM controller params are disabled since motor is not tuned -->
                      
                          <param name="spinup_type"         value="1"/>      <!-- 0: traditional, 1: sinusoidal -->
                          <param name="spinup_power"        value="60"/>     <!-- power used to during spin-up procedure -->
                          <param name="latch_power"         value="60"/>    <!-- power used during latching stage of spin-up (out of 999)-->
                          <param name="spinup_power_ramp"   value="8"/>      <!-- it will take ( 4096 / (spinup_power_ramp*10000) ) seconds to ramp sinusoidal start-up power from 0 to spinup_power -->
                          <param name="spinup_rpm_target"   value="2000"/>   <!-- Desired RPM at the end of the sinusoidal spin-up procedure -->
                          <param name="spinup_time_ms"      value="500"/>   <!-- Duration of the sinusoidal spin-up procedure -->
                          <param name="spinup_bemf_comp"    value="1"/>      <!-- 0: disable, 1:enable back-emf compensation in sinusoidal spin-up procedure -->
                          <param name="motor_kv"            value="2300"/>   <!-- kV value of the motor. used in back-emf compensation during spin-up -->
                      
                          <param name="min_num_cross_for_closed_loop" value="10"/>  <!-- exit latching mode of fixed power after this number of zero crossings -->
                          <param name="protection_stall_check_rpm" value="1000"/> <!-- if motor spins below this RPM, stall check will trigger and stop / restart the motor -->
                      
                          <param name="brake_to_stop"       value="0"/>             <!-- apply brake when stopping motor (or not) -->
                          <param name="stall_timeout_ns"    value="20000000"/>      <!-- after spin-up, if no zero crossing is not detected for this amount of time, motor is considered stalled -->
                          <param name="require_reset_if_stalled"      value="0"/>   <!-- require sending an array of zero commands to reset before next spin-up, if motor stalled -->
                      
                          <param name="tone_freqs"          value="[200, 215, 225, 250, 0,0,0,0, 0,0,0,0]"/> <!-- 200 is 2000Hz, max 255 -->
                          <param name="tone_durations"      value="[3,     0,    0,  0,  0,0,0,0, 0,0,0,0]"/> <!-- duration of each tone in units of 10 milli-seconds. Poor naming!!! -->
                          <param name="tone_powers"         value="[20,    0,    0,  0,  0,0,0,0, 0,0,0,0]"/> <!-- max is 255 -->
                      
                          <param name="dt_threshold_ns"       value="150000"/>      <!-- during start up, ignore inter-commutation times less than this val, probably noise -->
                          <param name="max_dt_ns"             value="2500000"/>     <!-- min and max values for time between two commutations. these are used as caps -->
                          <param name="min_dt_ns"             value="10000"/>
                          <param name="dt_bootstrap_ns"       value="2000000"/>     <!-- filter bootstrap value for commutation dt during start up -->
                      
                          <param name="spinup_stall_dt_ns"    value="6000000"/>     <!-- during spin-up, if no zero crossing is not detected for this amount of time, motor is considered stalled -->
                          <param name="spinup_stall_check_ns" value="30000000"/>    <!-- time after beginning of spinup to start checking for spinup stall -->
                      
                          <param name="alignment_time_ns"     value="0"/>           <!-- alignment time before spin-up -->
                          <param name="timing_advance"        value="0"/>
                          <param name="sense_advance"         value="0"/>
                      
                          <param name="demag_timing"          value="0"/>       <!-- unused -->
                          <param name="led_config"            value="0"/>       <!-- 0: enable status LEDs in bootloader and firmware, 1: disable LEDs in boot and firmware: 2: disable LEDs only in firmware. need FW 39.25 or later -->
                      
                        </TuneParams>
                      </EscParameters>
                      
                      
                      J Offline
                      J Offline
                      jbiscan21
                      Contributor
                      wrote last edited by
                      #11

                      @alex-kushleyev Alright I feel pretty dumb. But it is because the PID gains were zero in my config file...

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