# Motor stalling/failing - VOXL2 Starling

Source: https://forum.modalai.com/topic/4421/motor-stalling-failing-voxl2-starling
Category: Development Drones (https://forum.modalai.com/category/44/development-drones)
Tags: starling
Posted: 2025-05-13 01:31:50 UTC by JoeAR_21
Replies: 2 · Views: 624

## JoeAR_21 · 2025-05-13 01:31:50 UTC

One of our recently acquired motors has been failing, it spins up then briefly stops and starts back up, the voxl-esc spin reveals the following: 
INFO: ESC Information:
INFO: ---------------------
    ID         : 0 // problematic motor 
    Board      : version 37: ModalAi 4-in-1 ESC (M0134-1)
    UID        : 0x203330385246571800230046
    Firmware   : version   39, hash eb6fb500
    Bootloader : version  183, hash b4fa2cf8
    ID         : 1
    Board      : version 37: ModalAi 4-in-1 ESC (M0134-1)
    UID        : 0x203330385246571900310040
    Firmware   : version   39, hash eb6fb500
    Bootloader : version  183, hash b4fa2cf8
    ID         : 2
    Board      : version 37: ModalAi 4-in-1 ESC (M0134-1)
    UID        : 0x203330385246571900310042
    Firmware   : version   39, hash eb6fb500
    Bootloader : version  183, hash b4fa2cf8
    ID         : 3
    Board      : version 37: ModalAi 4-in-1 ESC (M0134-1)
    UID        : 0x203330385246571900280025
    Firmware   : version   39, hash eb6fb500
    Bootloader : version  183, hash b4fa2cf8
---------------------
Detected Python version : 3.6.9 (default, Mar 10 2023, 16:46:00) 
[GCC 8.4.0]
dpkg-query: no packages found matching...
Found voxl-esc tools bin version: 1.6
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 37: ModalAi 4-in-1 ESC (M0134-1)
    UID        : 0x203330385246571800230046
    Firmware   : version   39, hash eb6fb500
    Bootloader : version  183, hash b4fa2cf8
    ID         : 1
    Board      : version 37: ModalAi 4-in-1 ESC (M0134-1)
    UID        : 0x203330385246571900310040
    Firmware   : version   39, hash eb6fb500
    Bootloader : version  183, hash b4fa2cf8
    ID         : 2
    Board      : version 37: ModalAi 4-in-1 ESC (M0134-1)
    UID        : 0x203330385246571900310042
    Firmware   : version   39, hash eb6fb500
    Bootloader : version  183, hash b4fa2cf8
    ID         : 3
    Board      : version 37: ModalAi 4-in-1 ESC (M0134-1)
    UID        : 0x203330385246571900280025
    Firmware   : version   39, hash eb6fb500
    Bootloader : version  183, hash b4fa2cf8
---------------------
WARNING: skipping user prompt to start the test due to override
[0.013] (0) RPM: 0, PWR: 0, VOLTAGE: 6.760V, TEMPERATURE: 36.92C, CURRENT: -0.032A
[0.032] (0) RPM: 29, PWR: 0, VOLTAGE: 6.768V, TEMPERATURE: 36.90C, CURRENT: -0.032A
[0.052] (0) RPM: 59, PWR: 1, VOLTAGE: 6.768V, TEMPERATURE: 36.91C, CURRENT: -0.008A
[0.073] (0) RPM: 90, PWR: 2, VOLTAGE: 6.769V, TEMPERATURE: 36.89C, CURRENT: -0.016A
[0.092] (0) RPM: 119, PWR: 2, VOLTAGE: 6.765V, TEMPERATURE: 36.91C, CURRENT: 0.000A
[0.114] (0) RPM: 150, PWR: 3, VOLTAGE: 6.770V, TEMPERATURE: 36.91C, CURRENT: 0.000A
[0.132] (0) RPM: 179, PWR: 4, VOLTAGE: 6.768V, TEMPERATURE: 36.94C, CURRENT: -0.016A
[0.153] (0) RPM: 205, PWR: 4, VOLTAGE: 6.768V, TEMPERATURE: 36.93C, CURRENT: 0.016A
[0.175] (0) RPM: 228, PWR: 5, VOLTAGE: 6.761V, TEMPERATURE: 36.92C, CURRENT: 0.024A
[0.192] (0) RPM: 269, PWR: 6, VOLTAGE: 6.766V, TEMPERATURE: 36.88C, CURRENT: 0.024A
[0.219] (0) RPM: 309, PWR: 6, VOLTAGE: 6.768V, TEMPERATURE: 36.87C, CURRENT: 0.000A
[0.234] (0) RPM: 314, PWR: 7, VOLTAGE: 6.769V, TEMPERATURE: 36.86C, CURRENT: 0.016A
[0.252] (0) RPM: 358, PWR: 8, VOLTAGE: 6.766V, TEMPERATURE: 36.90C, CURRENT: 0.040A
[0.280] (0) RPM: 392, PWR: 8, VOLTAGE: 6.768V, TEMPERATURE: 36.91C, CURRENT: 0.024A
[0.292] (0) RPM: 418, PWR: 9, VOLTAGE: 6.765V, TEMPERATURE: 36.89C, CURRENT: 0.072A
[0.312] (0) RPM: 449, PWR: 10, VOLTAGE: 6.765V, TEMPERATURE: 36.91C, CURRENT: 0.072A
[0.336] (0) RPM: 464, PWR: 10, VOLTAGE: 6.764V, TEMPERATURE: 36.90C, CURRENT: 0.080A
[0.352] (0) RPM: 509, PWR: 11, VOLTAGE: 6.766V, TEMPERATURE: 36.88C, CURRENT: 0.104A
[0.379] (0) RPM: 528, PWR: 11, VOLTAGE: 6.755V, TEMPERATURE: 36.89C, CURRENT: 0.072A
[0.394] (0) RPM: 554, PWR: 12, VOLTAGE: 6.761V, TEMPERATURE: 36.90C, CURRENT: 0.072A
[0.413] (0) RPM: 599, PWR: 13, VOLTAGE: 6.760V, TEMPERATURE: 36.91C, CURRENT: 0.088A
[0.432] (0) RPM: 629, PWR: 14, VOLTAGE: 6.760V, TEMPERATURE: 36.90C, CURRENT: 0.168A
[0.452] (0) RPM: 658, PWR: 14, VOLTAGE: 6.761V, TEMPERATURE: 36.88C, CURRENT: 0.152A
[0.483] (0) RPM: 679, PWR: 14, VOLTAGE: 6.762V, TEMPERATURE: 36.89C, CURRENT: 0.128A
[0.493] (0) RPM: 719, PWR: 14, VOLTAGE: 6.762V, TEMPERATURE: 36.92C, CURRENT: 0.136A
[0.515] (0) RPM: 751, PWR: 14, VOLTAGE: 6.761V, TEMPERATURE: 36.93C, CURRENT: 0.152A
[0.532] (0) RPM: 779, PWR: 14, VOLTAGE: 6.755V, TEMPERATURE: 36.92C, CURRENT: 0.144A
[0.552] (0) RPM: 808, PWR: 14, VOLTAGE: 6.757V, TEMPERATURE: 36.94C, CURRENT: 0.120A
[0.577] (0) RPM: 845, PWR: 15, VOLTAGE: 6.754V, TEMPERATURE: 36.92C, CURRENT: 0.168A
[0.592] (0) RPM: 868, PWR: 15, VOLTAGE: 6.755V, TEMPERATURE: 36.94C, CURRENT: 0.080A
[0.612] (0) RPM: 898, PWR: 15, VOLTAGE: 6.757V, TEMPERATURE: 36.93C, CURRENT: 0.160A
[0.633] (0) RPM: 930, PWR: 15, VOLTAGE: 6.760V, TEMPERATURE: 36.93C, CURRENT: 0.176A
[0.652] (0) RPM: 959, PWR: 15, VOLTAGE: 6.761V, TEMPERATURE: 36.95C, CURRENT: 0.208A
[0.672] (0) RPM: 989, PWR: 15, VOLTAGE: 6.758V, TEMPERATURE: 36.94C, CURRENT: 0.192A
[0.694] (0) RPM: 1004, PWR: 15, VOLTAGE: 6.755V, TEMPERATURE: 36.94C, CURRENT: 0.176A
[0.712] (0) RPM: 1049, PWR: 16, VOLTAGE: 6.759V, TEMPERATURE: 36.95C, CURRENT: 0.208A
[0.733] (0) RPM: 1080, PWR: 16, VOLTAGE: 6.759V, TEMPERATURE: 36.94C, CURRENT: 0.160A
[0.752] (0) RPM: 1108, PWR: 16, VOLTAGE: 6.759V, TEMPERATURE: 36.95C, CURRENT: 0.176A
[0.788] (0) RPM: 1126, PWR: 16, VOLTAGE: 6.748V, TEMPERATURE: 36.95C, CURRENT: 0.160A
[0.792] (0) RPM: 1168, PWR: 16, VOLTAGE: 6.755V, TEMPERATURE: 36.95C, CURRENT: 0.144A
[0.813] (0) RPM: 1184, PWR: 16, VOLTAGE: 6.752V, TEMPERATURE: 36.96C, CURRENT: 0.120A
[0.832] (0) RPM: 1228, PWR: 17, VOLTAGE: 6.755V, TEMPERATURE: 36.97C, CURRENT: 0.216A
[0.852] (0) RPM: 1259, PWR: 17, VOLTAGE: 6.755V, TEMPERATURE: 37.00C, CURRENT: 0.112A
[0.873] (0) RPM: 1277, PWR: 17, VOLTAGE: 6.756V, TEMPERATURE: 36.98C, CURRENT: 0.120A
[0.893] (0) RPM: 1318, PWR: 17, VOLTAGE: 6.756V, TEMPERATURE: 36.97C, CURRENT: 0.072A
[0.913] (0) RPM: 1350, PWR: 17, VOLTAGE: 6.759V, TEMPERATURE: 36.96C, CURRENT: 0.136A
[0.932] (0) RPM: 1379, PWR: 17, VOLTAGE: 6.756V, TEMPERATURE: 37.01C, CURRENT: 0.136A
[0.952] (0) RPM: 1409, PWR: 18, VOLTAGE: 6.759V, TEMPERATURE: 36.98C, CURRENT: 0.192A
[0.977] (0) RPM: 1429, PWR: 18, VOLTAGE: 6.752V, TEMPERATURE: 36.99C, CURRENT: 0.136A
[0.994] (0) RPM: 1469, PWR: 18, VOLTAGE: 6.753V, TEMPERATURE: 36.97C, CURRENT: 0.144A
[1.013] (0) RPM: 1483, PWR: 18, VOLTAGE: 6.753V, TEMPERATURE: 36.98C, CURRENT: 0.056A
[1.033] (0) RPM: 1529, PWR: 18, VOLTAGE: 6.755V, TEMPERATURE: 36.98C, CURRENT: 0.120A
[1.052] (0) RPM: 1559, PWR: 18, VOLTAGE: 6.755V, TEMPERATURE: 36.98C, CURRENT: 0.128A
[1.079] (0) RPM: 1589, PWR: 19, VOLTAGE: 6.755V, TEMPERATURE: 36.98C, CURRENT: 0.224A
[1.094] (0) RPM: 1606, PWR: 19, VOLTAGE: 6.754V, TEMPERATURE: 36.99C, CURRENT: 0.120A
[1.112] (0) RPM: 1649, PWR: 19, VOLTAGE: 6.755V, TEMPERATURE: 37.00C, CURRENT: 0.160A
[1.133] (0) RPM: 1679, PWR: 19, VOLTAGE: 6.755V, TEMPERATURE: 36.99C, CURRENT: 0.160A
[1.152] (0) RPM: 1708, PWR: 19, VOLTAGE: 6.756V, TEMPERATURE: 36.99C, CURRENT: 0.136A
[1.176] (0) RPM: 1725, PWR: 19, VOLTAGE: 6.745V, TEMPERATURE: 36.99C, CURRENT: 0.224A
[1.194] (0) RPM: 1771, PWR: 19, VOLTAGE: 6.753V, TEMPERATURE: 36.99C, CURRENT: 0.192A
[1.212] (0) RPM: 1798, PWR: 20, VOLTAGE: 6.755V, TEMPERATURE: 37.01C, CURRENT: 0.168A
[1.235] (0) RPM: 1813, PWR: 20, VOLTAGE: 6.758V, TEMPERATURE: 36.98C, CURRENT: 0.136A
[1.252] (0) RPM: 1859, PWR: 20, VOLTAGE: 6.756V, TEMPERATURE: 36.99C, CURRENT: 0.152A
[1.276] (0) RPM: 1874, PWR: 20, VOLTAGE: 6.756V, TEMPERATURE: 37.01C, CURRENT: 0.096A
[1.292] (0) RPM: 1919, PWR: 20, VOLTAGE: 6.755V, TEMPERATURE: 37.05C, CURRENT: 0.224A
[1.314] (0) RPM: 1950, PWR: 20, VOLTAGE: 6.755V, TEMPERATURE: 37.04C, CURRENT: 0.136A
[1.332] (0) RPM: 1979, PWR: 20, VOLTAGE: 6.755V, TEMPERATURE: 37.04C, CURRENT: 0.152A
[1.353] (0) RPM: 2008, PWR: 21, VOLTAGE: 6.755V, TEMPERATURE: 37.03C, CURRENT: 0.176A
[1.375] (0) RPM: 2025, PWR: 21, VOLTAGE: 6.748V, TEMPERATURE: 37.03C, CURRENT: 0.152A
[1.394] (0) RPM: 2069, PWR: 21, VOLTAGE: 6.755V, TEMPERATURE: 37.02C, CURRENT: 0.176A
[1.413] (0) RPM: 2086, PWR: 21, VOLTAGE: 6.756V, TEMPERATURE: 37.00C, CURRENT: 0.136A
[1.432] (0) RPM: 2129, PWR: 21, VOLTAGE: 6.756V, TEMPERATURE: 37.02C, CURRENT: 0.160A
[1.453] (0) RPM: 2159, PWR: 21, VOLTAGE: 6.757V, TEMPERATURE: 37.01C, CURRENT: 0.168A
[1.480] (0) RPM: 2189, PWR: 22, VOLTAGE: 6.760V, TEMPERATURE: 37.03C, CURRENT: 0.176A
[1.493] (0) RPM: 2220, PWR: 22, VOLTAGE: 6.755V, TEMPERATURE: 37.01C, CURRENT: 0.160A
[1.513] (0) RPM: 2239, PWR: 22, VOLTAGE: 6.755V, TEMPERATURE: 37.03C, CURRENT: 0.128A
[1.532] (0) RPM: 2279, PWR: 22, VOLTAGE: 6.755V, TEMPERATURE: 37.02C, CURRENT: 0.136A
[1.552] (0) RPM: 2308, PWR: 22, VOLTAGE: 6.757V, TEMPERATURE: 37.04C, CURRENT: 0.216A
[1.578] (0) RPM: 2327, PWR: 22, VOLTAGE: 6.750V, TEMPERATURE: 37.05C, CURRENT: 0.120A
[1.593] (0) RPM: 2370, PWR: 22, VOLTAGE: 6.759V, TEMPERATURE: 37.04C, CURRENT: 0.200A
[1.612] (0) RPM: 2399, PWR: 23, VOLTAGE: 6.756V, TEMPERATURE: 37.04C, CURRENT: 0.168A
[1.633] (0) RPM: 2413, PWR: 23, VOLTAGE: 6.756V, TEMPERATURE: 37.05C, CURRENT: 0.144A
[1.652] (0) RPM: 2459, PWR: 23, VOLTAGE: 6.761V, TEMPERATURE: 37.06C, CURRENT: 0.104A
[1.676] (0) RPM: 2474, PWR: 23, VOLTAGE: 6.761V, TEMPERATURE: 37.07C, CURRENT: 0.152A
[1.692] (0) RPM: 2519, PWR: 23, VOLTAGE: 6.762V, TEMPERATURE: 37.04C, CURRENT: 0.176A
[1.712] (0) RPM: 2549, PWR: 23, VOLTAGE: 6.761V, TEMPERATURE: 37.03C, CURRENT: 0.144A
[1.734] (0) RPM: 2571, PWR: 23, VOLTAGE: 6.758V, TEMPERATURE: 37.03C, CURRENT: 0.128A
[1.752] (0) RPM: 2609, PWR: 24, VOLTAGE: 6.755V, TEMPERATURE: 37.04C, CURRENT: 0.136A
[1.775] (0) RPM: 2643, PWR: 24, VOLTAGE: 6.753V, TEMPERATURE: 37.02C, CURRENT: 0.128A
[1.792] (0) RPM: 2669, PWR: 24, VOLTAGE: 6.755V, TEMPERATURE: 37.01C, CURRENT: 0.008A
[1.812] (0) RPM: 2698, PWR: 24, VOLTAGE: 6.755V, TEMPERATURE: 36.98C, CURRENT: 0.120A
[1.832] (0) RPM: 2728, PWR: 24, VOLTAGE: 6.756V, TEMPERATURE: 36.97C, CURRENT: 0.104A
[1.853] (0) RPM: 2760, PWR: 24, VOLTAGE: 6.756V, TEMPERATURE: 36.98C, CURRENT: 0.112A
[1.882] (0) RPM: 2775, PWR: 24, VOLTAGE: 6.755V, TEMPERATURE: 36.99C, CURRENT: 0.128A
[1.896] (0) RPM: 2806, PWR: 25, VOLTAGE: 6.754V, TEMPERATURE: 36.98C, CURRENT: 0.128A
[1.912] (0) RPM: 2849, PWR: 25, VOLTAGE: 6.757V, TEMPERATURE: 37.00C, CURRENT: 0.136A
[1.934] (0) RPM: 2867, PWR: 25, VOLTAGE: 6.754V, TEMPERATURE: 37.02C, CURRENT: 0.184A
[1.952] (0) RPM: 2908, PWR: 25, VOLTAGE: 6.756V, TEMPERATURE: 36.98C, CURRENT: 0.176A
[1.976] (0) RPM: 2924, PWR: 25, VOLTAGE: 6.747V, TEMPERATURE: 36.98C, CURRENT: 0.104A
[1.994] (0) RPM: 2971, PWR: 25, VOLTAGE: 6.755V, TEMPERATURE: 36.98C, CURRENT: 0.128A
[2.012] (0) RPM: 2998, PWR: 26, VOLTAGE: 6.751V, TEMPERATURE: 36.97C, CURRENT: 0.208A
[2.033] (0) RPM: 3525, PWR: 10, VOLTAGE: 6.757V, TEMPERATURE: 36.97C, CURRENT: 0.088A
[2.052] (0) RPM: 3525, PWR: 10, VOLTAGE: 6.756V, TEMPERATURE: 36.98C, CURRENT: 0.184A
[2.074] (0) RPM: 3525, PWR: 10, VOLTAGE: 6.758V, TEMPERATURE: 36.97C, CURRENT: 0.128A
[2.093] (0) RPM: 0, PWR: 0, VOLTAGE: 6.766V, TEMPERATURE: 36.99C, CURRENT: -0.064A
[2.113] (0) RPM: 15, PWR: 0, VOLTAGE: 6.768V, TEMPERATURE: 37.00C, CURRENT: -0.040A
[2.132] (0) RPM: 58, PWR: 1, VOLTAGE: 6.768V, TEMPERATURE: 37.02C, CURRENT: -0.016A
[2.153] (0) RPM: 89, PWR: 1, VOLTAGE: 6.781V, TEMPERATURE: 37.04C, CURRENT: -0.032A
[2.177] (0) RPM: 106, PWR: 2, VOLTAGE: 6.761V, TEMPERATURE: 37.02C, CURRENT: -0.008A
[2.192] (0) RPM: 148, PWR: 3, VOLTAGE: 6.762V, TEMPERATURE: 37.02C, CURRENT: -0.040A
[2.212] (0) RPM: 167, PWR: 3, VOLTAGE: 6.757V, TEMPERATURE: 37.01C, CURRENT: 0.016A
[2.232] (0) RPM: 208, PWR: 4, VOLTAGE: 6.762V, TEMPERATURE: 37.05C, CURRENT: 0.072A
[2.253] (0) RPM: 239, PWR: 5, VOLTAGE: 6.763V, TEMPERATURE: 37.01C, CURRENT: 0.008A
[2.275] (0) RPM: 254, PWR: 5, VOLTAGE: 6.766V, TEMPERATURE: 37.03C, CURRENT: 0.048A
[2.292] (0) RPM: 298, PWR: 6, VOLTAGE: 6.766V, TEMPERATURE: 37.04C, CURRENT: 0.016A
[2.313] (0) RPM: 328, PWR: 7, VOLTAGE: 6.763V, TEMPERATURE: 37.05C, CURRENT: 0.056A
[2.332] (0) RPM: 358, PWR: 8, VOLTAGE: 6.762V, TEMPERATURE: 37.08C, CURRENT: 0.032A
[2.354] (0) RPM: 373, PWR: 8, VOLTAGE: 6.761V, TEMPERATURE: 37.11C, CURRENT: 0.024A
[2.375] (0) RPM: 423, PWR: 9, VOLTAGE: 6.761V, TEMPERATURE: 37.09C, CURRENT: 0.032A
[2.393] (0) RPM: 448, PWR: 10, VOLTAGE: 6.761V, TEMPERATURE: 37.08C, CURRENT: 0.032A
[2.412] (0) RPM: 478, PWR: 10, VOLTAGE: 6.761V, TEMPERATURE: 37.11C, CURRENT: 0.080A
[2.432] (0) RPM: 508, PWR: 11, VOLTAGE: 6.762V, TEMPERATURE: 37.11C, CURRENT: 0.048A
[2.454] (0) RPM: 523, PWR: 11, VOLTAGE: 6.762V, TEMPERATURE: 37.10C, CURRENT: 0.112A
[2.475] (0) RPM: 572, PWR: 12, VOLTAGE: 6.762V, TEMPERATURE: 37.14C, CURRENT: 0.184A
[2.494] (0) RPM: 600, PWR: 13, VOLTAGE: 6.760V, TEMPERATURE: 37.13C, CURRENT: 0.096A
[2.513] (0) RPM: 621, PWR: 14, VOLTAGE: 6.758V, TEMPERATURE: 37.12C, CURRENT: 0.056A
[2.532] (0) RPM: 658, PWR: 14, VOLTAGE: 6.760V, TEMPERATURE: 37.11C, CURRENT: 0.112A
[2.553] (0) RPM: 673, PWR: 14, VOLTAGE: 6.761V, TEMPERATURE: 37.10C, CURRENT: 0.168A
[2.573] (0) RPM: 720, PWR: 14, VOLTAGE: 6.755V, TEMPERATURE: 37.13C, CURRENT: 0.136A
[2.594] (0) RPM: 751, PWR: 14, VOLTAGE: 6.754V, TEMPERATURE: 37.13C, CURRENT: 0.200A
[2.612] (0) RPM: 778, PWR: 14, VOLTAGE: 6.755V, TEMPERATURE: 37.14C, CURRENT: 0.128A
[2.633] (0) RPM: 808, PWR: 14, VOLTAGE: 6.755V, TEMPERATURE: 37.15C, CURRENT: 0.104A
[2.653] (0) RPM: 838, PWR: 15, VOLTAGE: 6.756V, TEMPERATURE: 37.14C, CURRENT: 0.192A
[2.673] (0) RPM: 855, PWR: 15, VOLTAGE: 6.756V, TEMPERATURE: 37.16C, CURRENT: 0.128A
[2.694] (0) RPM: 901, PWR: 15, VOLTAGE: 6.758V, TEMPERATURE: 37.14C, CURRENT: 0.168A
[2.712] (0) RPM: 928, PWR: 15, VOLTAGE: 6.756V, TEMPERATURE: 37.17C, CURRENT: 0.160A
[2.734] (0) RPM: 944, PWR: 15, VOLTAGE: 6.755V, TEMPERATURE: 37.19C, CURRENT: 0.200A
[2.753] (0) RPM: 988, PWR: 15, VOLTAGE: 6.755V, TEMPERATURE: 37.17C, CURRENT: 0.096A
[2.792] (0) RPM: 1044, PWR: 16, VOLTAGE: 6.754V, TEMPERATURE: 37.13C, CURRENT: 0.136A
[2.795] (0) RPM: 1053, PWR: 16, VOLTAGE: 6.753V, TEMPERATURE: 37.13C, CURRENT: 0.152A
[2.811] (0) RPM: 1077, PWR: 16, VOLTAGE: 6.754V, TEMPERATURE: 37.15C, CURRENT: 0.096A
[2.833] (0) RPM: 1109, PWR: 16, VOLTAGE: 6.756V, TEMPERATURE: 37.13C, CURRENT: 0.152A
[2.853] (0) RPM: 1125, PWR: 16, VOLTAGE: 6.750V, TEMPERATURE: 37.12C, CURRENT: 0.136A
[2.872] (0) RPM: 1168, PWR: 16, VOLTAGE: 6.756V, TEMPERATURE: 37.13C, CURRENT: 0.040A
[2.892] (0) RPM: 1198, PWR: 16, VOLTAGE: 6.755V, TEMPERATURE: 37.12C, CURRENT: 0.200A
[2.912] (0) RPM: 1228, PWR: 17, VOLTAGE: 6.755V, TEMPERATURE: 37.11C, CURRENT: 0.120A
[2.932] (0) RPM: 1258, PWR: 17, VOLTAGE: 6.758V, TEMPERATURE: 37.09C, CURRENT: 0.136A
[2.952] (0) RPM: 1310, PWR: 17, VOLTAGE: 6.751V, TEMPERATURE: 37.09C, CURRENT: 0.336A
[2.987] (0) RPM: 1310, PWR: 17, VOLTAGE: 6.751V, TEMPERATURE: 37.09C, CURRENT: 0.336A
[2.995] (0) RPM: 1343, PWR: 17, VOLTAGE: 6.755V, TEMPERATURE: 37.12C, CURRENT: 0.152A
[3.012] (0) RPM: 1377, PWR: 17, VOLTAGE: 6.751V, TEMPERATURE: 37.12C, CURRENT: 0.160A
[3.032] (0) RPM: 1408, PWR: 18, VOLTAGE: 6.755V, TEMPERATURE: 37.15C, CURRENT: 0.072A
[3.054] (0) RPM: 1425, PWR: 18, VOLTAGE: 6.756V, TEMPERATURE: 37.16C, CURRENT: 0.152A
[3.072] (0) RPM: 1468, PWR: 18, VOLTAGE: 6.755V, TEMPERATURE: 37.17C, CURRENT: 0.120A
[3.095] (0) RPM: 1502, PWR: 18, VOLTAGE: 6.755V, TEMPERATURE: 37.17C, CURRENT: 0.160A
[3.112] (0) RPM: 1528, PWR: 18, VOLTAGE: 6.755V, TEMPERATURE: 37.17C, CURRENT: 0.160A
[3.132] (0) RPM: 1558, PWR: 18, VOLTAGE: 6.755V, TEMPERATURE: 37.18C, CURRENT: 0.168A
[3.153] (0) RPM: 1588, PWR: 19, VOLTAGE: 6.755V, TEMPERATURE: 37.20C, CURRENT: 0.120A
[3.173] (0) RPM: 1619, PWR: 19, VOLTAGE: 6.750V, TEMPERATURE: 37.16C, CURRENT: 0.136A
[3.193] (0) RPM: 1648, PWR: 19, VOLTAGE: 6.750V, TEMPERATURE: 37.14C, CURRENT: 0.144A
[3.212] (0) RPM: 1677, PWR: 19, VOLTAGE: 6.755V, TEMPERATURE: 37.17C, CURRENT: 0.192A
[3.232] (0) RPM: 1708, PWR: 19, VOLTAGE: 6.755V, TEMPERATURE: 37.14C, CURRENT: 0.160A
[3.253] (0) RPM: 1740, PWR: 19, VOLTAGE: 6.755V, TEMPERATURE: 37.13C, CURRENT: 0.176A
[3.272] (0) RPM: 1768, PWR: 19, VOLTAGE: 6.755V, TEMPERATURE: 37.16C, CURRENT: 0.136A
[3.292] (0) RPM: 1784, PWR: 19, VOLTAGE: 6.755V, TEMPERATURE: 37.17C, CURRENT: 0.168A
[3.312] (0) RPM: 1828, PWR: 20, VOLTAGE: 6.757V, TEMPERATURE: 37.19C, CURRENT: 0.224A
[3.334] (0) RPM: 1861, PWR: 20, VOLTAGE: 6.755V, TEMPERATURE: 37.19C, CURRENT: 0.128A
[3.353] (0) RPM: 1874, PWR: 20, VOLTAGE: 6.757V, TEMPERATURE: 37.21C, CURRENT: 0.144A
[3.388] (0) RPM: 1888, PWR: 20, VOLTAGE: 6.756V, TEMPERATURE: 37.20C, CURRENT: 0.144A
[3.394] (0) RPM: 1950, PWR: 20, VOLTAGE: 6.752V, TEMPERATURE: 37.21C, CURRENT: 0.176A
[3.412] (0) RPM: 1978, PWR: 20, VOLTAGE: 6.752V, TEMPERATURE: 37.21C, CURRENT: 0.160A
[3.435] (0) RPM: 1992, PWR: 21, VOLTAGE: 6.755V, TEMPERATURE: 37.22C, CURRENT: 0.160A
[3.452] (0) RPM: 2038, PWR: 21, VOLTAGE: 6.756V, TEMPERATURE: 37.18C, CURRENT: 0.120A
[3.478] (0) RPM: 2077, PWR: 21, VOLTAGE: 6.756V, TEMPERATURE: 37.18C, CURRENT: 0.120A
[3.493] (0) RPM: 2083, PWR: 21, VOLTAGE: 6.756V, TEMPERATURE: 37.20C, CURRENT: 0.120A
[3.512] (0) RPM: 2128, PWR: 21, VOLTAGE: 6.756V, TEMPERATURE: 37.21C, CURRENT: 0.160A
[3.532] (0) RPM: 2158, PWR: 21, VOLTAGE: 6.756V, TEMPERATURE: 37.22C, CURRENT: 0.192A
[3.552] (0) RPM: 2188, PWR: 22, VOLTAGE: 6.757V, TEMPERATURE: 37.22C, CURRENT: 0.160A
[3.574] (0) RPM: 2205, PWR: 22, VOLTAGE: 6.745V, TEMPERATURE: 37.22C, CURRENT: 0.152A
[3.593] (0) RPM: 2249, PWR: 22, VOLTAGE: 6.754V, TEMPERATURE: 37.22C, CURRENT: 0.128A
[3.612] (0) RPM: 2277, PWR: 22, VOLTAGE: 6.754V, TEMPERATURE: 37.22C, CURRENT: 0.216A
[3.639] (0) RPM: 2292, PWR: 22, VOLTAGE: 6.755V, TEMPERATURE: 37.22C, CURRENT: 0.160A
[3.652] (0) RPM: 2338, PWR: 22, VOLTAGE: 6.756V, TEMPERATURE: 37.20C, CURRENT: 0.160A
[3.674] (0) RPM: 2354, PWR: 22, VOLTAGE: 6.756V, TEMPERATURE: 37.22C, CURRENT: 0.136A
[3.693] (0) RPM: 2399, PWR: 23, VOLTAGE: 6.759V, TEMPERATURE: 37.21C, CURRENT: 0.208A
[3.714] (0) RPM: 2429, PWR: 23, VOLTAGE: 6.756V, TEMPERATURE: 37.23C, CURRENT: 0.152A
[3.732] (0) RPM: 2458, PWR: 23, VOLTAGE: 6.755V, TEMPERATURE: 37.25C, CURRENT: 0.112A
[3.752] (0) RPM: 2488, PWR: 23, VOLTAGE: 6.757V, TEMPERATURE: 37.27C, CURRENT: 0.120A
[3.791] (0) RPM: 2505, PWR: 23, VOLTAGE: 6.748V, TEMPERATURE: 37.27C, CURRENT: 0.136A
[3.795] (0) RPM: 2552, PWR: 23, VOLTAGE: 6.755V, TEMPERATURE: 37.23C, CURRENT: 0.128A
[3.812] (0) RPM: 2577, PWR: 24, VOLTAGE: 6.754V, TEMPERATURE: 37.19C, CURRENT: 0.136A
[3.836] (0) RPM: 2595, PWR: 24, VOLTAGE: 6.758V, TEMPERATURE: 37.16C, CURRENT: 0.088A
[3.852] (0) RPM: 2638, PWR: 24, VOLTAGE: 6.755V, TEMPERATURE: 37.17C, CURRENT: 0.112A
[3.873] (0) RPM: 2669, PWR: 24, VOLTAGE: 6.758V, TEMPERATURE: 37.16C, CURRENT: 0.168A
[3.895] (0) RPM: 2683, PWR: 24, VOLTAGE: 6.756V, TEMPERATURE: 37.15C, CURRENT: 0.120A
[3.912] (0) RPM: 2728, PWR: 24, VOLTAGE: 6.755V, TEMPERATURE: 37.15C, CURRENT: 0.176A
[3.933] (0) RPM: 2758, PWR: 24, VOLTAGE: 6.755V, TEMPERATURE: 37.16C, CURRENT: 0.032A
[3.956] (0) RPM: 2775, PWR: 24, VOLTAGE: 6.755V, TEMPERATURE: 37.16C, CURRENT: 0.120A
[3.974] (0) RPM: 2821, PWR: 25, VOLTAGE: 6.752V, TEMPERATURE: 37.18C, CURRENT: 0.128A
[3.993] (0) RPM: 2849, PWR: 25, VOLTAGE: 6.755V, TEMPERATURE: 37.18C, CURRENT: 0.152A
[4.012] (0) RPM: 2877, PWR: 25, VOLTAGE: 6.755V, TEMPERATURE: 37.19C, CURRENT: 0.096A
[4.037] (0) RPM: 2915, PWR: 25, VOLTAGE: 6.755V, TEMPERATURE: 37.17C, CURRENT: 0.080A
[4.052] (0) RPM: 2938, PWR: 25, VOLTAGE: 6.754V, TEMPERATURE: 37.17C, CURRENT: 0.136A
[4.072] (0) RPM: 2968, PWR: 25, VOLTAGE: 6.756V, TEMPERATURE: 37.19C, CURRENT: 0.176A
[4.092] (0) RPM: 2997, PWR: 26, VOLTAGE: 6.756V, TEMPERATURE: 37.19C, CURRENT: 0.144A
[4.112] (0) RPM: 3525, PWR: 10, VOLTAGE: 6.754V, TEMPERATURE: 37.18C, CURRENT: 0.112A
[4.135] (0) RPM: 3525, PWR: 10, VOLTAGE: 6.755V, TEMPERATURE: 37.19C, CURRENT: 0.144A
[4.152] (0) RPM: 3525, PWR: 10, VOLTAGE: 6.756V, TEMPERATURE: 37.17C, CURRENT: 0.048A
[4.173] (0) RPM: 0, PWR: 0, VOLTAGE: 6.761V, TEMPERATURE: 37.16C, CURRENT: -0.032A
[4.193] (0) RPM: 29, PWR: 0, VOLTAGE: 6.761V, TEMPERATURE: 37.18C, CURRENT: -0.024A
[4.212] (0) RPM: 57, PWR: 1, VOLTAGE: 6.762V, TEMPERATURE: 37.18C, CURRENT: -0.080A
[4.233] (0) RPM: 88, PWR: 1, VOLTAGE: 6.764V, TEMPERATURE: 37.17C, CURRENT: -0.032A

It always spins up to speed then resets its power/goes to 0, I thought it was a soldering/wiring issue, but after re-soldering it to the board I am still facing the same issue. This is a recent issue likely after a VIO failure crash since it was working well beforehand. Do let me know if there is a software solution or re-calibration I should be doing for this new motor, or if a replacement can be provided, thanks!

## Reply by Alex Kushleyev (ModalAI staff) · 2025-05-13 04:08:41 UTC

Hello @JoeAR_21 ,

The debug log shows that the transition from the sinusoidal spin-up to closed-loop (based on back-emf) control is not working. There are several safety checks to prevent a bad motor from spinning up and the checks happen during this transition.

Most likely the motor windings or leads are compromised, either one of the phases is disconnected or there may be a short between two phases.

If you have a milliohm meter, you could accurately verify the phase resistance. A disconnected phase can be verified using a regular multi-meter by checking pairwise resistance between the 3 phases (should be the same and close to zero (in the range of 200-300 mOhm), depending on the specific motor used).

While an ESC issue is also possible, however, it is less likely to occur during a crash, unless the ESC was mechanically damaged. 

Alex

## Reply by JoeAR_21 · 2025-05-16 00:07:08 UTC (in reply to Alex Kushleyev)

@Alex-Kushleyev I will look into replacing the motors, is there anything I can do to prevent motor failures like this? my platform has been having a lot of QVIO failures