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BikeControl/zwift-capture.txt
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dtourolleandClaude Opus 5 57eb5e809b Virtual gearing, trainer-speed blend, and cadence decode 
Gears are expressed as an offset to the commanded gradient, leaving the
physics on the route's true gradient so shifting changes effort, not speed.
Neutral gear commands exactly the route gradient, so an un-shifted ride is
unchanged.

Cadence is not in FTMS on this trainer but is on its Zwift channel, decoded
against captured frames. The undeclared FTMS trailing bytes were ruled out:
wheel RPM restated at a fixed 73.8x speed.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-08-05 15:33:28 +02:00

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Looking for address 94:05:bb:04:76:28...
Connected to 94:05:bb:04:76:28 (VANRYSEL-HT-2876)
No Zwift manufacturer data in the advertisement — this is not a controller,
or it was already connected when we found it.
=== Zwift service 00000001-19ca-4651-86e5-fa29dcdd09d1 (Zwift custom service) ===
char 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify))
properties: notify
char 00000003-19ca-4651-86e5-fa29dcdd09d1 (Zwift sync RX (write))
properties: write-without-response
char 00000004-19ca-4651-86e5-fa29dcdd09d1 (Zwift sync TX (indicate))
properties: indicate
Subscribed to 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify))
Subscribed to 00000004-19ca-4651-86e5-fa29dcdd09d1 (Zwift sync TX (indicate))
=== Handshake ===
-> RideOn + 00 09 (confirmed on Click v2) : 526964654f6e0009
[ 0.20s] #1 00000004-19ca-4651-86e5-fa29dcdd09d1 (Zwift sync TX (indicate)): 526964654f6e0200
RideOn reply, 8 byte(s) total
[ 0.98s] #2 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
RideOn acknowledged — this is the handshake the device wants.
TASK-0 answered: the unencrypted path is open.
Listening for 120 s. Press the Click's paddles and D-pad; press Ctrl-C to stop.
[ 1.95s] #3 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 3.02s] #4 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 4.00s] #5 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 4.97s] #6 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 5.95s] #7 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 7.02s] #8 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 8.00s] #9 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308011000182c200128f709
type: unknown (0x03)
varints: field 1 = 1, field 2 = 0, field 3 = 44, field 4 = 1, field 5 = 1271
[ 8.97s] #10 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03080510001865200528de16
type: unknown (0x03)
varints: field 1 = 5, field 2 = 0, field 3 = 101, field 4 = 5, field 5 = 2910
[ 9.95s] #11 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03080a10001870200a289319
type: unknown (0x03)
varints: field 1 = 10, field 2 = 0, field 3 = 112, field 4 = 10, field 5 = 3219
[ 11.02s] #12 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03080610001869200628d117
type: unknown (0x03)
varints: field 1 = 6, field 2 = 0, field 3 = 105, field 4 = 6, field 5 = 3025
[ 11.99s] #13 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308041000184e200428ca11
type: unknown (0x03)
varints: field 1 = 4, field 2 = 0, field 3 = 78, field 4 = 4, field 5 = 2250
[ 12.97s] #14 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03080310001835200328fb0b
type: unknown (0x03)
varints: field 1 = 3, field 2 = 0, field 3 = 53, field 4 = 3, field 5 = 1531
[ 13.94s] #15 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03080210001833200228c10b
type: unknown (0x03)
varints: field 1 = 2, field 2 = 0, field 3 = 51, field 4 = 2, field 5 = 1473
[ 15.01s] #16 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 15.99s] #17 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 16.97s] #18 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 18.04s] #19 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 19.01s] #20 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 19.99s] #21 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 20.96s] #22 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 22.04s] #23 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 23.01s] #24 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 23.99s] #25 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 24.96s] #26 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308001000180020002800
type: unknown (0x03)
varints: field 1 = 0, field 2 = 0, field 3 = 0, field 4 = 0, field 5 = 0
[ 26.03s] #27 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03080310001854200328f612
type: unknown (0x03)
varints: field 1 = 3, field 2 = 0, field 3 = 84, field 4 = 3, field 5 = 2422
[ 27.01s] #28 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030877100018c9032077289466
type: unknown (0x03)
varints: field 1 = 119, field 2 = 0, field 3 = 457, field 4 = 119, field 5 = 13076
[ 27.98s] #29 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03088e01100018f603208e0128a170
type: unknown (0x03)
varints: field 1 = 142, field 2 = 0, field 3 = 502, field 4 = 142, field 5 = 14369
[ 29.06s] #30 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030852100018fe03205228f371
type: unknown (0x03)
varints: field 1 = 82, field 2 = 0, field 3 = 510, field 4 = 82, field 5 = 14579
[ 30.03s] #31 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03086d100018af04206d28ef7c
type: unknown (0x03)
varints: field 1 = 109, field 2 = 0, field 3 = 559, field 4 = 109, field 5 = 15983
[ 31.00s] #32 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030873100018dd04207328858701
type: unknown (0x03)
varints: field 1 = 115, field 2 = 0, field 3 = 605, field 4 = 115, field 5 = 17285
[ 31.98s] #33 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030879100018f104207928dc8b01
type: unknown (0x03)
varints: field 1 = 121, field 2 = 0, field 3 = 625, field 4 = 121, field 5 = 17884
[ 33.05s] #34 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030879100018fd04207928a28e01
type: unknown (0x03)
varints: field 1 = 121, field 2 = 0, field 3 = 637, field 4 = 121, field 5 = 18210
[ 34.03s] #35 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030884011000189d0520840128c59501
type: unknown (0x03)
varints: field 1 = 132, field 2 = 0, field 3 = 669, field 4 = 132, field 5 = 19141
[ 35.00s] #36 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03087b100018fe04207b28cf8e01
type: unknown (0x03)
varints: field 1 = 123, field 2 = 0, field 3 = 638, field 4 = 123, field 5 = 18255
[ 35.98s] #37 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030887011000189b0520870128fe9401
type: unknown (0x03)
varints: field 1 = 135, field 2 = 0, field 3 = 667, field 4 = 135, field 5 = 19070
[ 37.05s] #38 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03088401100018900520840128cb9201
type: unknown (0x03)
varints: field 1 = 132, field 2 = 0, field 3 = 656, field 4 = 132, field 5 = 18763
[ 38.03s] #39 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030880011000188d0520800128f39101
type: unknown (0x03)
varints: field 1 = 128, field 2 = 0, field 3 = 653, field 4 = 128, field 5 = 18675
[ 39.00s] #40 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03087e1000188505207e288f9001
type: unknown (0x03)
varints: field 1 = 126, field 2 = 0, field 3 = 645, field 4 = 126, field 5 = 18447
[ 39.98s] #41 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03087a100018f404207a289f8c01
type: unknown (0x03)
varints: field 1 = 122, field 2 = 0, field 3 = 628, field 4 = 122, field 5 = 17951
[ 41.05s] #42 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030879100018f204207928ec8b01
type: unknown (0x03)
varints: field 1 = 121, field 2 = 0, field 3 = 626, field 4 = 121, field 5 = 17900
[ 42.02s] #43 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030879100018f504207928b98c01
type: unknown (0x03)
varints: field 1 = 121, field 2 = 0, field 3 = 629, field 4 = 121, field 5 = 17977
[ 43.00s] #44 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030876100018ec04207628be8a01
type: unknown (0x03)
varints: field 1 = 118, field 2 = 0, field 3 = 620, field 4 = 118, field 5 = 17726
[ 43.97s] #45 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03086e100018d504206e28ba8501
type: unknown (0x03)
varints: field 1 = 110, field 2 = 0, field 3 = 597, field 4 = 110, field 5 = 17082
[ 45.05s] #46 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030869100018cd04206928be8301
type: unknown (0x03)
varints: field 1 = 105, field 2 = 0, field 3 = 589, field 4 = 105, field 5 = 16830
[ 46.02s] #47 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03086c100018d204206c28d98401
type: unknown (0x03)
varints: field 1 = 108, field 2 = 0, field 3 = 594, field 4 = 108, field 5 = 16985
[ 46.99s] #48 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030874100018f404207428a88c01
type: unknown (0x03)
varints: field 1 = 116, field 2 = 0, field 3 = 628, field 4 = 116, field 5 = 17960
[ 48.07s] #49 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308d201100018b60620d20128cdb701
type: unknown (0x03)
varints: field 1 = 210, field 2 = 0, field 3 = 822, field 4 = 210, field 5 = 23501
[ 49.04s] #50 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308c803100018930820c80328f3e801
type: unknown (0x03)
varints: field 1 = 456, field 2 = 0, field 3 = 1043, field 4 = 456, field 5 = 29811
[ 50.02s] #51 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308c403100018c60820c403289ff401
type: unknown (0x03)
varints: field 1 = 452, field 2 = 0, field 3 = 1094, field 4 = 452, field 5 = 31263
[ 50.99s] #52 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03088503100018ad0820850328d6ee01
type: unknown (0x03)
varints: field 1 = 389, field 2 = 0, field 3 = 1069, field 4 = 389, field 5 = 30550
[ 52.07s] #53 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308dc02100018840820dc0228c1e501
type: unknown (0x03)
varints: field 1 = 348, field 2 = 0, field 3 = 1028, field 4 = 348, field 5 = 29377
[ 53.04s] #54 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308d4021000188e0820d40228f0e701
type: unknown (0x03)
varints: field 1 = 340, field 2 = 0, field 3 = 1038, field 4 = 340, field 5 = 29680
[ 54.02s] #55 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308d002100018ed0720d00228bce001
type: unknown (0x03)
varints: field 1 = 336, field 2 = 0, field 3 = 1005, field 4 = 336, field 5 = 28732
[ 54.99s] #56 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308b602100018cf0720b60228d5d901
type: unknown (0x03)
varints: field 1 = 310, field 2 = 0, field 3 = 975, field 4 = 310, field 5 = 27861
[ 56.06s] #57 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308a302100018aa0720a30228bed101
type: unknown (0x03)
varints: field 1 = 291, field 2 = 0, field 3 = 938, field 4 = 291, field 5 = 26814
[ 57.04s] #58 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308a9011000188f0620a90128e7ae01
type: unknown (0x03)
varints: field 1 = 169, field 2 = 0, field 3 = 783, field 4 = 169, field 5 = 22375
[ 58.01s] #59 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03083e100018f004203e28b18b01
type: unknown (0x03)
varints: field 1 = 62, field 2 = 0, field 3 = 624, field 4 = 62, field 5 = 17841
[ 58.99s] #60 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030827100018ef03202728d66e
type: unknown (0x03)
varints: field 1 = 39, field 2 = 0, field 3 = 495, field 4 = 39, field 5 = 14166
[ 60.06s] #61 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03081b1000188903201b28e457
type: unknown (0x03)
varints: field 1 = 27, field 2 = 0, field 3 = 393, field 4 = 27, field 5 = 11236
[ 61.03s] #62 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030814100018b0022014288044
type: unknown (0x03)
varints: field 1 = 20, field 2 = 0, field 3 = 304, field 4 = 20, field 5 = 8704
[ 62.01s] #63 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030812100018e201201228ce32
type: unknown (0x03)
varints: field 1 = 18, field 2 = 0, field 3 = 226, field 4 = 18, field 5 = 6478
[ 62.99s] #64 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308121000189d012012289f23
type: unknown (0x03)
varints: field 1 = 18, field 2 = 0, field 3 = 157, field 4 = 18, field 5 = 4511
[ 64.06s] #65 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03080910001865200928db16
type: unknown (0x03)
varints: field 1 = 9, field 2 = 0, field 3 = 101, field 4 = 9, field 5 = 2907
[ 65.03s] #66 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 030804100018432004288c0f
type: unknown (0x03)
varints: field 1 = 4, field 2 = 0, field 3 = 67, field 4 = 4, field 5 = 1932
[ 66.01s] #67 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 03080310001833200328c80b
type: unknown (0x03)
varints: field 1 = 3, field 2 = 0, field 3 = 51, field 4 = 3, field 5 = 1480
[ 66.98s] #68 00000002-19ca-4651-86e5-fa29dcdd09d1 (Zwift async (notify)): 0308011000180020012800
type: unknown (0x03)
varints: field 1 = 1, field 2 = 0, field 3 = 0, field 4 = 1, field 5 = 0
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