# Starling 2 Max Motor (0) Not Operational Source: https://forum.modalai.com/topic/4541/starling-2-max-motor-0-not-operational Category: General Questions (https://forum.modalai.com/category/2/general-questions) Posted: 2025-06-26 14:45:48 UTC by daz_22 Replies: 6 · Views: 1046 ## daz_22 · 2025-06-26 14:45:48 UTC I just attempted to fly my Starling 2 Max for the first time. After arming I realized that only 3 of the 4 motors are spinning with motor 0 not operational. I've tried some of the voxl-esc commands (scan, detect, spin) and it seems to be picking up all 4 of the ESC's but motor 0 continues to remain dormant. I've also tried upgrading the firmware (voxl-esc upgrade_firmware) and upgrading the VOXL-SDK to the latest version (1.5.0) to no avail. Are there any other procedures I can take to fix this? Is it a faulty motor? Thanks. ## Reply by Alex Kushleyev (ModalAI staff) · 2025-07-01 04:46:51 UTC @daz_22 , is there any motion at all in the motor when you try to spin it up using `voxl-esc-spin` commands? In other words, is the motor completely stationary or does it look like it's attempting to start? Alex ## Reply by daz_22 · 2025-07-07 13:52:03 UTC (in reply to Alex Kushleyev) @Alex-Kushleyev There is no motion at all in the motor using the `voxl-esc spin` command. I just replaced the motor as well and still no motion. ## Reply by daz_22 · 2025-07-07 15:55:44 UTC @Alex-Kushleyev Have suggestions on any tests I can run or any config settings I need to change? Looks like the motor still doesn't respond using this px4 actuator test as well `px4-actuator_test set -m 2 -v 0.1 -t 1` ## Reply by Alex Kushleyev (ModalAI staff) · 2025-07-07 21:46:46 UTC (in reply to daz_22) @daz_22 , just to confirm.. If you run `./voxl-esc-spin.py --id 255 --power 10` ( from `/usr/share/modalai/voxl-esc-tools/`), then three out of for motors spin up, but ID 0 does not spin up and there is no noticeable motion at all on ID 0? Also, if you run `./voxl-esc-scan.py`, are all four ESC channels detected? please also run `./voxl-esc-verify-params.py` to make sure the all four ESC channels have the same ESC parameters. When replacing the motor, did you de-solder the motor leads at the ESC or on the arm? Alex ## Reply by daz_22 · 2025-07-07 22:11:59 UTC (in reply to Alex Kushleyev) @Alex-Kushleyev Output of `./voxl-esc-spin.py --id 255 --power 10` --> ``` starling2-max (D0012):/usr/share/modalai/voxl-esc-tools$ ./voxl-esc-spin.py --id 255 --power 10 Detected Python version : 3.6.9 (default, Mar 10 2023, 16:46:00) [GCC 8.4.0] Found voxl-esc tools bin version: 1.9 VOXL Platform: M0054 Detected RB5 Flight, VOXL2 M0054 or M0104! 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 ID : 0 Board : version 40: ModalAi 4-in-1 ESC (M0129-3) UID : 0x20393335575553130013003A Firmware : version 39, hash 9c6233d6 Bootloader : version 184, hash 10bf24c8 ID : 1 Board : version 40: ModalAi 4-in-1 ESC (M0129-3) UID : 0x203933355755531300130036 Firmware : version 39, hash 9c6233d6 Bootloader : version 184, hash 10bf24c8 ID : 2 Board : version 40: ModalAi 4-in-1 ESC (M0129-3) UID : 0x203933355755531300130038 Firmware : version 39, hash 9c6233d6 Bootloader : version 184, hash 10bf24c8 ID : 3 Board : version 40: ModalAi 4-in-1 ESC (M0129-3) UID : 0x20393335575553130013003C Firmware : version 39, hash 9c6233d6 Bootloader : version 184, hash 10bf24c8 --------------------- WARNING: This test requires motors to spin at high speeds with propellers attached. Please ensure that appropriate protective equipment is being worn at all times and that the motor and propeller are adequately isolated from all persons. For best results, please perform this test at the nominal voltage for the battery used. Type "Yes" to continue: yes [0.013] (0) RPM: 0, PWR: 0, VOLTAGE: 0.000V, TEMPERATURE: 0.00C, CURRENT: 0.000A [0.013] (1) RPM: 0, PWR: 0, VOLTAGE: 12.074V, TEMPERATURE: 57.05C, CURRENT: 0.000A [0.013] (2) RPM: 0, PWR: 0, VOLTAGE: 0.000V, TEMPERATURE: 0.00C, CURRENT: 0.000A [0.013] (3) RPM: 0, PWR: 0, VOLTAGE: 0.000V, TEMPERATURE: 0.00C, CURRENT: 0.000A [0.033] (0) RPM: 0, PWR: 0, VOLTAGE: 0.000V, TEMPERATURE: 0.00C, CURRENT: 0.000A [0.033] (1) RPM: 0, PWR: 0, VOLTAGE: 12.074V, TEMPERATURE: 57.05C, CURRENT: 0.000A [0.033] (2) RPM: 13, PWR: 3, VOLTAGE: 12.050V, TEMPERATURE: 57.94C, CURRENT: 0.000A [0.033] (3) RPM: 0, PWR: 0, VOLTAGE: 0.000V, TEMPERATURE: 0.00C, CURRENT: 0.000A [0.054] (0) RPM: 38, PWR: 9, VOLTAGE: 11.956V, TEMPERATURE: 58.00C, CURRENT: 0.000A, BOARD_VOLTAGE: 12.015V, BOARD_CURRENT: 0.560A [0.054] (1) RPM: 0, PWR: 0, VOLTAGE: 12.074V, TEMPERATURE: 57.05C, CURRENT: 0.000A, BOARD_VOLTAGE: 12.015V, BOARD_CURRENT: 0.560A [0.054] (2) RPM: 13, PWR: 3, VOLTAGE: 12.050V, TEMPERATURE: 57.94C, CURRENT: 0.000A, BOARD_VOLTAGE: 12.015V, BOARD_CURRENT: 0.560A [0.054] (3) RPM: 25, PWR: 6, VOLTAGE: 12.015V, TEMPERATURE: 59.78C, CURRENT: 0.000A, BOARD_VOLTAGE: 12.015V, BOARD_CURRENT: 0.560A [0.074] (0) RPM: 38, PWR: 9, VOLTAGE: 11.956V, TEMPERATURE: 58.00C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.563V, BOARD_CURRENT: 2.856A [0.074] (1) RPM: 53, PWR: 13, VOLTAGE: 11.828V, TEMPERATURE: 57.05C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.563V, BOARD_CURRENT: 2.856A [0.074] (2) RPM: 64, PWR: 16, VOLTAGE: 11.713V, TEMPERATURE: 57.94C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.563V, BOARD_CURRENT: 2.856A [0.074] (3) RPM: 79, PWR: 17, VOLTAGE: 11.563V, TEMPERATURE: 59.83C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.563V, BOARD_CURRENT: 2.856A [0.093] (0) RPM: 92, PWR: 17, VOLTAGE: 11.512V, TEMPERATURE: 58.02C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.563V, BOARD_CURRENT: 2.856A [0.093] (1) RPM: 53, PWR: 13, VOLTAGE: 11.828V, TEMPERATURE: 57.05C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.563V, BOARD_CURRENT: 2.856A [0.093] (2) RPM: 64, PWR: 16, VOLTAGE: 11.713V, TEMPERATURE: 57.94C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.563V, BOARD_CURRENT: 2.856A [0.093] (3) RPM: 79, PWR: 17, VOLTAGE: 11.563V, TEMPERATURE: 59.83C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.563V, BOARD_CURRENT: 2.856A [0.113] (0) RPM: 92, PWR: 17, VOLTAGE: 11.512V, TEMPERATURE: 58.02C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.489V, BOARD_CURRENT: 3.192A [0.113] (1) RPM: 105, PWR: 17, VOLTAGE: 11.478V, TEMPERATURE: 57.07C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.489V, BOARD_CURRENT: 3.192A [0.113] (2) RPM: 118, PWR: 17, VOLTAGE: 11.503V, TEMPERATURE: 57.91C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.489V, BOARD_CURRENT: 3.192A [0.113] (3) RPM: 131, PWR: 17, VOLTAGE: 11.489V, TEMPERATURE: 59.82C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.489V, BOARD_CURRENT: 3.192A [0.134] (0) RPM: 148, PWR: 17, VOLTAGE: 11.464V, TEMPERATURE: 58.00C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.489V, BOARD_CURRENT: 3.192A [0.134] (1) RPM: 105, PWR: 17, VOLTAGE: 11.478V, TEMPERATURE: 57.07C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.489V, BOARD_CURRENT: 3.192A [0.134] (2) RPM: 118, PWR: 17, VOLTAGE: 11.503V, TEMPERATURE: 57.91C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.489V, BOARD_CURRENT: 3.192A [0.134] (3) RPM: 131, PWR: 17, VOLTAGE: 11.489V, TEMPERATURE: 59.82C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.489V, BOARD_CURRENT: 3.192A [0.154] (0) RPM: 148, PWR: 17, VOLTAGE: 11.464V, TEMPERATURE: 58.00C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.489V, BOARD_CURRENT: 3.192A [0.154] (1) RPM: 158, PWR: 17, VOLTAGE: 11.472V, TEMPERATURE: 57.05C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.489V, BOARD_CURRENT: 3.192A [0.154] (2) RPM: 171, PWR: 17, VOLTAGE: 11.495V, TEMPERATURE: 57.90C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.489V, BOARD_CURRENT: 3.192A [0.154] (3) RPM: 131, PWR: 17, VOLTAGE: 11.489V, TEMPERATURE: 59.82C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.489V, BOARD_CURRENT: 3.192A [0.173] (0) RPM: 197, PWR: 18, VOLTAGE: 11.449V, TEMPERATURE: 57.99C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.446V, BOARD_CURRENT: 3.328A [0.173] (1) RPM: 211, PWR: 18, VOLTAGE: 11.456V, TEMPERATURE: 57.01C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.446V, BOARD_CURRENT: 3.328A [0.173] (2) RPM: 171, PWR: 17, VOLTAGE: 11.495V, TEMPERATURE: 57.90C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.446V, BOARD_CURRENT: 3.328A [0.173] (3) RPM: 185, PWR: 17, VOLTAGE: 11.446V, TEMPERATURE: 59.88C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.446V, BOARD_CURRENT: 3.328A [0.193] (0) RPM: 197, PWR: 18, VOLTAGE: 11.449V, TEMPERATURE: 57.99C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.446V, BOARD_CURRENT: 3.328A [0.193] (1) RPM: 211, PWR: 18, VOLTAGE: 11.456V, TEMPERATURE: 57.01C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.446V, BOARD_CURRENT: 3.328A [0.193] (2) RPM: 229, PWR: 18, VOLTAGE: 11.447V, TEMPERATURE: 57.92C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.446V, BOARD_CURRENT: 3.328A [0.193] (3) RPM: 185, PWR: 17, VOLTAGE: 11.446V, TEMPERATURE: 59.88C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.446V, BOARD_CURRENT: 3.328A [0.213] (0) RPM: 251, PWR: 18, VOLTAGE: 11.445V, TEMPERATURE: 57.98C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.431V, BOARD_CURRENT: 3.336A [0.213] (1) RPM: 211, PWR: 18, VOLTAGE: 11.456V, TEMPERATURE: 57.01C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.431V, BOARD_CURRENT: 3.336A [0.213] (2) RPM: 229, PWR: 18, VOLTAGE: 11.447V, TEMPERATURE: 57.92C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.431V, BOARD_CURRENT: 3.336A [0.213] (3) RPM: 238, PWR: 18, VOLTAGE: 11.431V, TEMPERATURE: 59.91C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.431V, BOARD_CURRENT: 3.336A [0.235] (0) RPM: 251, PWR: 18, VOLTAGE: 11.445V, TEMPERATURE: 57.98C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.426V, BOARD_CURRENT: 3.376A [0.235] (1) RPM: 264, PWR: 18, VOLTAGE: 11.440V, TEMPERATURE: 57.01C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.426V, BOARD_CURRENT: 3.376A [0.235] (2) RPM: 277, PWR: 18, VOLTAGE: 11.436V, TEMPERATURE: 57.97C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.426V, BOARD_CURRENT: 3.376A [0.235] (3) RPM: 293, PWR: 18, VOLTAGE: 11.426V, TEMPERATURE: 59.92C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.426V, BOARD_CURRENT: 3.376A [0.254] (0) RPM: 304, PWR: 18, VOLTAGE: 11.431V, TEMPERATURE: 57.98C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.426V, BOARD_CURRENT: 3.376A [0.254] (1) RPM: 264, PWR: 18, VOLTAGE: 11.440V, TEMPERATURE: 57.01C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.426V, BOARD_CURRENT: 3.376A [0.254] (2) RPM: 277, PWR: 18, VOLTAGE: 11.436V, TEMPERATURE: 57.97C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.426V, BOARD_CURRENT: 3.376A [0.254] (3) RPM: 293, PWR: 18, VOLTAGE: 11.426V, TEMPERATURE: 59.92C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.426V, BOARD_CURRENT: 3.376A [0.273] (0) RPM: 304, PWR: 18, VOLTAGE: 11.431V, TEMPERATURE: 57.98C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.426V, BOARD_CURRENT: 3.376A [0.273] (1) RPM: 319, PWR: 18, VOLTAGE: 11.406V, TEMPERATURE: 57.03C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.426V, BOARD_CURRENT: 3.376A [0.273] (2) RPM: 330, PWR: 18, VOLTAGE: 11.411V, TEMPERATURE: 57.97C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.426V, BOARD_CURRENT: 3.376A [0.273] (3) RPM: 293, PWR: 18, VOLTAGE: 11.426V, TEMPERATURE: 59.92C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.426V, BOARD_CURRENT: 3.376A [0.296] (0) RPM: 358, PWR: 19, VOLTAGE: 11.397V, TEMPERATURE: 57.99C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.416V, BOARD_CURRENT: 3.320A [0.296] (1) RPM: 373, PWR: 19, VOLTAGE: 11.367V, TEMPERATURE: 57.07C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.416V, BOARD_CURRENT: 3.320A [0.296] (2) RPM: 330, PWR: 18, VOLTAGE: 11.411V, TEMPERATURE: 57.97C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.416V, BOARD_CURRENT: 3.320A [0.296] (3) RPM: 344, PWR: 18, VOLTAGE: 11.416V, TEMPERATURE: 59.95C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.416V, BOARD_CURRENT: 3.320A [0.313] (0) RPM: 358, PWR: 19, VOLTAGE: 11.397V, TEMPERATURE: 57.99C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.416V, BOARD_CURRENT: 3.320A [0.313] (1) RPM: 373, PWR: 19, VOLTAGE: 11.367V, TEMPERATURE: 57.07C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.416V, BOARD_CURRENT: 3.320A [0.313] (2) RPM: 383, PWR: 19, VOLTAGE: 11.396V, TEMPERATURE: 57.96C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.416V, BOARD_CURRENT: 3.320A [0.313] (3) RPM: 344, PWR: 18, VOLTAGE: 11.416V, TEMPERATURE: 59.95C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.416V, BOARD_CURRENT: 3.320A [0.333] (0) RPM: 411, PWR: 19, VOLTAGE: 11.369V, TEMPERATURE: 58.00C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.388V, BOARD_CURRENT: 3.504A [0.333] (1) RPM: 424, PWR: 19, VOLTAGE: 11.365V, TEMPERATURE: 57.10C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.388V, BOARD_CURRENT: 3.504A [0.333] (2) RPM: 383, PWR: 19, VOLTAGE: 11.396V, TEMPERATURE: 57.96C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.388V, BOARD_CURRENT: 3.504A [0.333] (3) RPM: 397, PWR: 19, VOLTAGE: 11.388V, TEMPERATURE: 59.94C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.388V, BOARD_CURRENT: 3.504A [0.355] (0) RPM: 411, PWR: 19, VOLTAGE: 11.369V, TEMPERATURE: 58.00C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.388V, BOARD_CURRENT: 3.504A [0.355] (1) RPM: 424, PWR: 19, VOLTAGE: 11.365V, TEMPERATURE: 57.10C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.388V, BOARD_CURRENT: 3.504A [0.355] (2) RPM: 437, PWR: 19, VOLTAGE: 11.378V, TEMPERATURE: 57.95C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.388V, BOARD_CURRENT: 3.504A [0.355] (3) RPM: 452, PWR: 19, VOLTAGE: 11.349V, TEMPERATURE: 59.94C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.388V, BOARD_CURRENT: 3.504A [0.373] (0) RPM: 464, PWR: 19, VOLTAGE: 11.345V, TEMPERATURE: 58.01C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.349V, BOARD_CURRENT: 3.736A [0.373] (1) RPM: 424, PWR: 19, VOLTAGE: 11.365V, TEMPERATURE: 57.10C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.349V, BOARD_CURRENT: 3.736A [0.373] (2) RPM: 437, PWR: 19, VOLTAGE: 11.378V, TEMPERATURE: 57.95C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.349V, BOARD_CURRENT: 3.736A [0.373] (3) RPM: 452, PWR: 19, VOLTAGE: 11.349V, TEMPERATURE: 59.94C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.349V, BOARD_CURRENT: 3.736A [0.393] (0) RPM: 464, PWR: 19, VOLTAGE: 11.345V, TEMPERATURE: 58.01C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.332V, BOARD_CURRENT: 3.728A [0.393] (1) RPM: 477, PWR: 19, VOLTAGE: 11.339V, TEMPERATURE: 57.08C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.332V, BOARD_CURRENT: 3.728A [0.393] (2) RPM: 489, PWR: 19, VOLTAGE: 11.369V, TEMPERATURE: 58.00C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.332V, BOARD_CURRENT: 3.728A [0.393] (3) RPM: 503, PWR: 19, VOLTAGE: 11.332V, TEMPERATURE: 59.92C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.332V, BOARD_CURRENT: 3.728A [0.413] (0) RPM: 520, PWR: 19, VOLTAGE: 11.339V, TEMPERATURE: 58.06C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.332V, BOARD_CURRENT: 3.728A [0.413] (1) RPM: 477, PWR: 19, VOLTAGE: 11.339V, TEMPERATURE: 57.08C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.332V, BOARD_CURRENT: 3.728A [0.413] (2) RPM: 489, PWR: 19, VOLTAGE: 11.369V, TEMPERATURE: 58.00C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.332V, BOARD_CURRENT: 3.728A [0.413] (3) RPM: 503, PWR: 19, VOLTAGE: 11.332V, TEMPERATURE: 59.92C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.332V, BOARD_CURRENT: 3.728A [0.433] (0) RPM: 520, PWR: 19, VOLTAGE: 11.339V, TEMPERATURE: 58.06C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.332V, BOARD_CURRENT: 3.728A [0.433] (1) RPM: 530, PWR: 20, VOLTAGE: 11.348V, TEMPERATURE: 57.13C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.332V, BOARD_CURRENT: 3.728A [0.433] (2) RPM: 542, PWR: 20, VOLTAGE: 11.314V, TEMPERATURE: 58.02C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.332V, BOARD_CURRENT: 3.728A [0.433] (3) RPM: 503, PWR: 19, VOLTAGE: 11.332V, TEMPERATURE: 59.92C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.332V, BOARD_CURRENT: 3.728A [0.454] (0) RPM: 570, PWR: 20, VOLTAGE: 11.324V, TEMPERATURE: 58.09C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.323V, BOARD_CURRENT: 3.800A [0.454] (1) RPM: 584, PWR: 20, VOLTAGE: 11.294V, TEMPERATURE: 57.12C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.323V, BOARD_CURRENT: 3.800A [0.454] (2) RPM: 542, PWR: 20, VOLTAGE: 11.314V, TEMPERATURE: 58.02C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.323V, BOARD_CURRENT: 3.800A [0.454] (3) RPM: 557, PWR: 20, VOLTAGE: 11.323V, TEMPERATURE: 60.00C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.323V, BOARD_CURRENT: 3.800A [0.473] (0) RPM: 570, PWR: 20, VOLTAGE: 11.324V, TEMPERATURE: 58.09C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.323V, BOARD_CURRENT: 3.800A [0.473] (1) RPM: 584, PWR: 20, VOLTAGE: 11.294V, TEMPERATURE: 57.12C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.323V, BOARD_CURRENT: 3.800A [0.473] (2) RPM: 595, PWR: 20, VOLTAGE: 11.319V, TEMPERATURE: 58.09C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.323V, BOARD_CURRENT: 3.800A [0.473] (3) RPM: 557, PWR: 20, VOLTAGE: 11.323V, TEMPERATURE: 60.00C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.323V, BOARD_CURRENT: 3.800A [0.493] (0) RPM: 623, PWR: 20, VOLTAGE: 11.323V, TEMPERATURE: 58.09C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.318V, BOARD_CURRENT: 3.760A [0.493] (1) RPM: 584, PWR: 20, VOLTAGE: 11.294V, TEMPERATURE: 57.12C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.318V, BOARD_CURRENT: 3.760A [0.493] (2) RPM: 595, PWR: 20, VOLTAGE: 11.319V, TEMPERATURE: 58.09C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.318V, BOARD_CURRENT: 3.760A [0.493] (3) RPM: 609, PWR: 20, VOLTAGE: 11.318V, TEMPERATURE: 60.01C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.318V, BOARD_CURRENT: 3.760A [0.515] (0) RPM: 623, PWR: 20, VOLTAGE: 11.323V, TEMPERATURE: 58.09C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.310V, BOARD_CURRENT: 3.984A [0.515] (1) RPM: 636, PWR: 20, VOLTAGE: 11.297V, TEMPERATURE: 57.17C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.310V, BOARD_CURRENT: 3.984A [0.515] (2) RPM: 648, PWR: 20, VOLTAGE: 11.307V, TEMPERATURE: 58.05C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.310V, BOARD_CURRENT: 3.984A [0.515] (3) RPM: 665, PWR: 20, VOLTAGE: 11.310V, TEMPERATURE: 60.03C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.310V, BOARD_CURRENT: 3.984A [0.533] (0) RPM: 677, PWR: 20, VOLTAGE: 11.272V, TEMPERATURE: 58.10C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.310V, BOARD_CURRENT: 3.984A [0.533] (1) RPM: 636, PWR: 20, VOLTAGE: 11.297V, TEMPERATURE: 57.17C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.310V, BOARD_CURRENT: 3.984A [0.533] (2) RPM: 648, PWR: 20, VOLTAGE: 11.307V, TEMPERATURE: 58.05C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.310V, BOARD_CURRENT: 3.984A [0.533] (3) RPM: 665, PWR: 20, VOLTAGE: 11.310V, TEMPERATURE: 60.03C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.310V, BOARD_CURRENT: 3.984A [0.554] (0) RPM: 677, PWR: 20, VOLTAGE: 11.272V, TEMPERATURE: 58.10C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.310V, BOARD_CURRENT: 3.984A [0.554] (1) RPM: 690, PWR: 20, VOLTAGE: 11.288V, TEMPERATURE: 57.13C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.310V, BOARD_CURRENT: 3.984A [0.554] (2) RPM: 701, PWR: 21, VOLTAGE: 11.321V, TEMPERATURE: 58.10C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.310V, BOARD_CURRENT: 3.984A [0.554] (3) RPM: 665, PWR: 20, VOLTAGE: 11.310V, TEMPERATURE: 60.03C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.310V, BOARD_CURRENT: 3.984A [0.577] (0) RPM: 729, PWR: 21, VOLTAGE: 11.262V, TEMPERATURE: 58.10C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.250V, BOARD_CURRENT: 4.152A [0.577] (1) RPM: 690, PWR: 20, VOLTAGE: 11.288V, TEMPERATURE: 57.13C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.250V, BOARD_CURRENT: 4.152A [0.577] (2) RPM: 701, PWR: 21, VOLTAGE: 11.321V, TEMPERATURE: 58.10C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.250V, BOARD_CURRENT: 4.152A [0.577] (3) RPM: 717, PWR: 21, VOLTAGE: 11.250V, TEMPERATURE: 60.06C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.250V, BOARD_CURRENT: 4.152A [0.593] (0) RPM: 729, PWR: 21, VOLTAGE: 11.262V, TEMPERATURE: 58.10C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.250V, BOARD_CURRENT: 4.152A [0.593] (1) RPM: 747, PWR: 21, VOLTAGE: 11.290V, TEMPERATURE: 57.23C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.250V, BOARD_CURRENT: 4.152A [0.593] (2) RPM: 754, PWR: 21, VOLTAGE: 11.293V, TEMPERATURE: 58.10C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.250V, BOARD_CURRENT: 4.152A [0.593] (3) RPM: 717, PWR: 21, VOLTAGE: 11.250V, TEMPERATURE: 60.06C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.250V, BOARD_CURRENT: 4.152A [0.613] (0) RPM: 782, PWR: 21, VOLTAGE: 11.250V, TEMPERATURE: 58.09C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.253V, BOARD_CURRENT: 4.160A [0.613] (1) RPM: 796, PWR: 21, VOLTAGE: 11.264V, TEMPERATURE: 57.26C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.253V, BOARD_CURRENT: 4.160A [0.613] (2) RPM: 754, PWR: 21, VOLTAGE: 11.293V, TEMPERATURE: 58.10C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.253V, BOARD_CURRENT: 4.160A [0.613] (3) RPM: 769, PWR: 21, VOLTAGE: 11.253V, TEMPERATURE: 60.11C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.253V, BOARD_CURRENT: 4.160A [0.635] (0) RPM: 782, PWR: 21, VOLTAGE: 11.250V, TEMPERATURE: 58.09C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.253V, BOARD_CURRENT: 4.160A [0.635] (1) RPM: 796, PWR: 21, VOLTAGE: 11.264V, TEMPERATURE: 57.26C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.253V, BOARD_CURRENT: 4.160A [0.635] (2) RPM: 811, PWR: 21, VOLTAGE: 11.267V, TEMPERATURE: 58.24C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.253V, BOARD_CURRENT: 4.160A [0.635] (3) RPM: 769, PWR: 21, VOLTAGE: 11.253V, TEMPERATURE: 60.11C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.253V, BOARD_CURRENT: 4.160A [0.655] (0) RPM: 836, PWR: 21, VOLTAGE: 11.263V, TEMPERATURE: 58.11C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.257V, BOARD_CURRENT: 4.064A [0.655] (1) RPM: 796, PWR: 21, VOLTAGE: 11.264V, TEMPERATURE: 57.26C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.257V, BOARD_CURRENT: 4.064A [0.655] (2) RPM: 811, PWR: 21, VOLTAGE: 11.267V, TEMPERATURE: 58.24C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.257V, BOARD_CURRENT: 4.064A [0.655] (3) RPM: 823, PWR: 21, VOLTAGE: 11.257V, TEMPERATURE: 60.20C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.257V, BOARD_CURRENT: 4.064A [0.674] (0) RPM: 836, PWR: 21, VOLTAGE: 11.263V, TEMPERATURE: 58.11C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.248V, BOARD_CURRENT: 4.000A [0.674] (1) RPM: 851, PWR: 21, VOLTAGE: 11.206V, TEMPERATURE: 57.26C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.248V, BOARD_CURRENT: 4.000A [0.674] (2) RPM: 860, PWR: 21, VOLTAGE: 11.230V, TEMPERATURE: 58.23C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.248V, BOARD_CURRENT: 4.000A [0.674] (3) RPM: 876, PWR: 22, VOLTAGE: 11.248V, TEMPERATURE: 60.18C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.248V, BOARD_CURRENT: 4.000A [0.693] (0) RPM: 889, PWR: 22, VOLTAGE: 11.242V, TEMPERATURE: 58.18C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.248V, BOARD_CURRENT: 4.000A [0.693] (1) RPM: 851, PWR: 21, VOLTAGE: 11.206V, TEMPERATURE: 57.26C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.248V, BOARD_CURRENT: 4.000A [0.693] (2) RPM: 860, PWR: 21, VOLTAGE: 11.230V, TEMPERATURE: 58.23C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.248V, BOARD_CURRENT: 4.000A [0.693] (3) RPM: 876, PWR: 22, VOLTAGE: 11.248V, TEMPERATURE: 60.18C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.248V, BOARD_CURRENT: 4.000A [0.713] (0) RPM: 889, PWR: 22, VOLTAGE: 11.242V, TEMPERATURE: 58.18C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.221V, BOARD_CURRENT: 4.216A [0.713] (1) RPM: 902, PWR: 22, VOLTAGE: 11.222V, TEMPERATURE: 57.27C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.221V, BOARD_CURRENT: 4.216A [0.713] (2) RPM: 914, PWR: 22, VOLTAGE: 11.234V, TEMPERATURE: 58.27C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.221V, BOARD_CURRENT: 4.216A [0.713] (3) RPM: 928, PWR: 22, VOLTAGE: 11.221V, TEMPERATURE: 60.27C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.221V, BOARD_CURRENT: 4.216A [0.735] (0) RPM: 945, PWR: 22, VOLTAGE: 11.214V, TEMPERATURE: 58.17C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.221V, BOARD_CURRENT: 4.216A [0.735] (1) RPM: 902, PWR: 22, VOLTAGE: 11.222V, TEMPERATURE: 57.27C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.221V, BOARD_CURRENT: 4.216A [0.735] (2) RPM: 914, PWR: 22, VOLTAGE: 11.234V, TEMPERATURE: 58.27C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.221V, BOARD_CURRENT: 4.216A [0.735] (3) RPM: 928, PWR: 22, VOLTAGE: 11.221V, TEMPERATURE: 60.27C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.221V, BOARD_CURRENT: 4.216A [0.754] (0) RPM: 945, PWR: 22, VOLTAGE: 11.214V, TEMPERATURE: 58.17C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.221V, BOARD_CURRENT: 4.216A [0.754] (1) RPM: 957, PWR: 22, VOLTAGE: 11.225V, TEMPERATURE: 57.37C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.221V, BOARD_CURRENT: 4.216A [0.754] (2) RPM: 966, PWR: 22, VOLTAGE: 11.239V, TEMPERATURE: 58.30C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.221V, BOARD_CURRENT: 4.216A [0.754] (3) RPM: 928, PWR: 22, VOLTAGE: 11.221V, TEMPERATURE: 60.27C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.221V, BOARD_CURRENT: 4.216A [0.773] (0) RPM: 998, PWR: 22, VOLTAGE: 11.204V, TEMPERATURE: 58.23C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.122V, BOARD_CURRENT: 4.272A [0.773] (1) RPM: 1009, PWR: 22, VOLTAGE: 11.200V, TEMPERATURE: 57.42C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.122V, BOARD_CURRENT: 4.272A [0.773] (2) RPM: 966, PWR: 22, VOLTAGE: 11.239V, TEMPERATURE: 58.30C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.122V, BOARD_CURRENT: 4.272A [0.773] (3) RPM: 982, PWR: 22, VOLTAGE: 11.122V, TEMPERATURE: 60.24C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.122V, BOARD_CURRENT: 4.272A [0.794] (0) RPM: 998, PWR: 22, VOLTAGE: 11.204V, TEMPERATURE: 58.23C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.122V, BOARD_CURRENT: 4.272A [0.794] (1) RPM: 1009, PWR: 22, VOLTAGE: 11.200V, TEMPERATURE: 57.42C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.122V, BOARD_CURRENT: 4.272A [0.794] (2) RPM: 1020, PWR: 22, VOLTAGE: 11.231V, TEMPERATURE: 58.33C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.122V, BOARD_CURRENT: 4.272A [0.794] (3) RPM: 982, PWR: 22, VOLTAGE: 11.122V, TEMPERATURE: 60.24C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.122V, BOARD_CURRENT: 4.272A [0.813] (0) RPM: 1048, PWR: 23, VOLTAGE: 11.188V, TEMPERATURE: 58.20C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.167V, BOARD_CURRENT: 4.336A [0.813] (1) RPM: 1061, PWR: 23, VOLTAGE: 11.169V, TEMPERATURE: 57.45C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.167V, BOARD_CURRENT: 4.336A [0.813] (2) RPM: 1020, PWR: 22, VOLTAGE: 11.231V, TEMPERATURE: 58.33C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.167V, BOARD_CURRENT: 4.336A [0.813] (3) RPM: 1035, PWR: 22, VOLTAGE: 11.167V, TEMPERATURE: 60.30C, CURRENT: 0.000A, BOARD_VOLTAGE: 11.167V, BOARD_CURRENT: 4.336A ...... ``` Output of `./voxl-esc-verify-params.py` --> ``` starling2-max (D0012):/usr/share/modalai/voxl-esc-tools$ ./voxl-esc-verify-params.py Detected Python version : 3.6.9 (default, Mar 10 2023, 16:46:00) [GCC 8.4.0] Found voxl-esc tools bin version: 1.9 VOXL Platform: M0054 Detected RB5 Flight, VOXL2 M0054 or M0104! 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 INFO: Params from ID 0 match ../voxl-esc-params/D0012_Starling_MAX/esc_params_m0129_f2203_5_1500kv_7x3.7x3.xml INFO: Params from ID 1 match ../voxl-esc-params/D0012_Starling_MAX/esc_params_m0129_f2203_5_1500kv_7x3.7x3.xml INFO: Params from ID 2 match ../voxl-esc-params/D0012_Starling_MAX/esc_params_m0129_f2203_5_1500kv_7x3.7x3.xml INFO: Params from ID 3 match ../voxl-esc-params/D0012_Starling_MAX/esc_params_m0129_f2203_5_1500kv_7x3.7x3.xml INFO: Success! Params in all ESCs are valid and identical. ``` All four of the ESC channels are detected, the params seem to be correct, and motor ID 0 continues to not spin with no noticeable motion. And I have the motor leads temporarily connected on the arm, not at the ESC. ## Reply by Alex Kushleyev (ModalAI staff) · 2025-07-09 05:03:08 UTC (in reply to daz_22) @daz_22 , thanks for sending the output of the spin script. Just to note, the RPMs are reported as ramping up to around 1000 (by the end of the printout) because during the initial phase (spin-up), the ESC operates in open loop mode, where it drives the motor but does not detect the actual speed. During spin-up the predicted RPM is printed, but it could be false, if the motor is stuck or not even attached. The closed-loop control starts after the smooth spin-up, where the true RPM is reported (however you did not provide those prints, but i suspect the ID0 would just try to restart based on the reported RPM). The MCU in the ESC channel 0 seems to be functional and communicating, so that is good. However, the motor not spinning is not good. From software side, everything looks normal. If you believe that the Starling 2 Max arrived with non-functional ESC / wiring (who knows?), you should submit an RMA request in order to correct the situation. modalai.com/rma . If you think the issue might have been caused due to a crash or something like that and you wish us to fix it, you may still submit the RMA request. Alternatively, you could disassemble the drone to gain access to the ESC and see if you can visually detect the issue with the ESC or wiring. Either ESC channel 0 or wiring seems faulty. Please let me know if you have any other questions. Alex