Falcon Rotator only de-rotates in one direction

[lpldave]

When using the derotation feature for the Pegasus Falcon Rotator, it only moves in the counterclockwise direction regardless of whether the direction is set to reversed or not.

To Reproduce:

Launch the Falcon Rotator driver through the device manager in KStars. Set value for derotation (I used 10 ms per step). It rotates in the counterclockwise direction. Set value for derotation back to zero to disable it. Click "Enable" under "Reverse" and set value for derotation (I used 10 ms per step). Rotation is still in the same direction, but is expected to be reversed.

Desktop:

• OS: PopOS 22.04 LTS (based on Ubuntu)
• INDILib 2.0.3 and KStars

Log File:

INFO 7.563281 sec : Session log file *** INFO 12.550966 sec : Pegasus Falcon is online. INFO 478.595166 sec : De-rotation is enabled and set to 1 step per 10 milliseconds. INFO 490.119361 sec : De-rotaiton is disabled. INFO 493.575854 sec : Rotator direction is reversed. INFO 498.519098 sec : De-rotation is enabled and set to 1 step per 10 milliseconds. INFO 523.759419 sec : De-rotaiton is disabled. INFO 525.263378 sec : Rotator direction is normal. INFO 530.227448 sec : De-rotation is enabled and set to 1 step per 10 milliseconds. INFO 555.030551 sec : De-rotaiton is disabled. INFO 568.352810 sec : Pegasus Falcon is offline.

[escribana]

Hi @lpldave

I just checked the reaction of my Falcon Rotator respective to the reverse direction and did not notice any problems. Following your suggestion I set the derotation to 10ms per step and changed the rotator direction according your proceeding. The device is reacting as expected, rotates backward if the direction is reversed and forward if set to normal.

OS: Official Ubuntu 22.04 LTS INDILib 2.0.3 and KStars 3.6.7beta

[lpldave]

Thank you for checking! I’ll give mine another try and see if I can get any more diagnostic info about what might be going on with my setup.

[escribana]

Please set the following in "Logging" (button [Logs] in EKOS):

1. Verbosity: Verbose
2. Output: File
3. Drivers: Rotator

Open [Pegasus Falcon]/[Options] in "INDI Control Panel" and set the following:

1. Debug Levels: All (i.e. add "Driver Debug")
2. Logging Levels: All (i.e. add "Driver Debug")
3. Log Output: "To Log File"

Now the emitted low level commands will be saved to something like this: [INFO] Session log file /home/user/.indi/logs/2023-09-23/indi_falcon_rotator/indi_falcon_rotator_07:38:42.log

This is the content: indi_falcon_rotator_07:27:54.log

[lpldave]

Hi, sorry for the huge delay on this. I tried it again with logging, and the file is attached below. I tried both reversing in the middle of rotation, as well as stopping rotation, reversing, and restarting. In all cases, it still only moved in the counterclockwise direction.

INFO 10.833675 sec : Session log file /home/obrien/.indi/logs/2023-10-27/indi_falcon_rotator/indi_falcon_rotator_08:11:57.log DEBUG 11.037204 sec : CMD <FA> DEBUG 11.076262 sec : RES <FR_OK:7280:84.03:0:1:0:0

DEBUG 12.081354 sec : CMD <FA> DEBUG 12.116055 sec : RES <FR_OK:7280:84.03:0:1:0:0

DEBUG 13.121240 sec : CMD <FA> DEBUG 13.156261 sec : RES <FR_OK:7280:84.03:0:1:0:0

DEBUG 14.161204 sec : CMD <FA> DEBUG 14.197016 sec : RES <FR_OK:7280:84.03:0:1:0:0

DEBUG 15.201199 sec : CMD <FA> DEBUG 15.236746 sec : RES <FR_OK:7280:84.03:0:1:0:0

DEBUG 16.241196 sec : CMD <FA> DEBUG 16.276979 sec : RES <FR_OK:7280:84.03:0:1:0:0

DEBUG 17.281193 sec : CMD <FA> DEBUG 17.317570 sec : RES <FR_OK:7280:84.03:0:1:0:0

DEBUG 18.322811 sec : CMD <FA> DEBUG 18.357489 sec : RES <FR_OK:7280:84.03:0:1:0:0

DEBUG 18.805417 sec : CMD DR:10 INFO 18.805485 sec : De-rotation is enabled and set to 1 step per 10 milliseconds. DEBUG 19.360483 sec : CMD <FA> DEBUG 19.397779 sec : RES <FR_OK:7304:84.30:1:1:1:0

DEBUG 20.401200 sec : CMD <FA> DEBUG 20.437990 sec : RES <FR_OK:7349:84.82:0:1:1:0

DEBUG 21.439211 sec : CMD <FA> DEBUG 21.478221 sec : RES <FR_OK:7394:85.34:1:1:1:0

DEBUG 22.479639 sec : CMD <FA> DEBUG 22.518768 sec : RES <FR_OK:7439:85.86:1:1:1:0

DEBUG 23.520536 sec : CMD <FA> DEBUG 23.558740 sec : RES <FR_OK:7485:86.39:0:1:1:0

DEBUG 24.560486 sec : CMD <FA> DEBUG 24.599423 sec : RES <FR_OK:7530:86.91:1:1:1:0

DEBUG 25.600699 sec : CMD <FA> DEBUG 25.639758 sec : RES <FR_OK:7575:87.43:1:1:1:0

DEBUG 26.641495 sec : CMD <FA> DEBUG 26.680008 sec : RES <FR_OK:7621:87.96:0:1:1:0

DEBUG 27.681144 sec : CMD <FA> DEBUG 27.720259 sec : RES <FR_OK:7666:88.48:1:1:1:0

DEBUG 28.721686 sec : CMD <FA> DEBUG 28.760582 sec : RES <FR_OK:7711:89.00:1:1:1:0

DEBUG 29.762060 sec : CMD <FA> DEBUG 29.800478 sec : RES <FR_OK:7756:89.52:1:1:1:0

DEBUG 30.801782 sec : CMD <FA> DEBUG 30.841061 sec : RES <FR_OK:7802:90.05:0:1:1:0

DEBUG 31.842844 sec : CMD <FA> DEBUG 31.880825 sec : RES <FR_OK:7847:90.57:1:1:1:0

DEBUG 32.882365 sec : CMD <FA> DEBUG 32.921553 sec : RES <FR_OK:7892:91.09:1:1:1:0

DEBUG 33.922825 sec : CMD <FA> DEBUG 33.961616 sec : RES <FR_OK:7937:91.61:1:1:1:0

DEBUG 34.962844 sec : CMD <FA> DEBUG 35.001461 sec : RES <FR_OK:7983:92.14:1:1:1:0

DEBUG 36.002684 sec : CMD <FA> DEBUG 36.041728 sec : RES <FR_OK:8028:92.66:1:1:1:0

DEBUG 36.461474 sec : CMD FN:1 DEBUG 36.489857 sec : RES <FN:1

INFO 36.489937 sec : Rotator direction is reversed. DEBUG 37.042970 sec : CMD <FA> DEBUG 37.082308 sec : RES <FR_OK:8024:92.61:0:1:1:1

DEBUG 38.084079 sec : CMD <FA> DEBUG 38.122898 sec : RES <FR_OK:7979:92.09:1:1:1:1

DEBUG 39.124667 sec : CMD <FA> DEBUG 39.162683 sec : RES <FR_OK:7934:91.57:1:1:1:1

DEBUG 40.163978 sec : CMD <FA> DEBUG 40.202762 sec : RES <FR_OK:7888:91.04:0:1:1:1

DEBUG 41.204020 sec : CMD <FA> DEBUG 41.243498 sec : RES <FR_OK:7843:90.52:1:1:1:1

DEBUG 42.245238 sec : CMD <FA> DEBUG 42.283697 sec : RES <FR_OK:7798:90.00:0:1:1:1

DEBUG 43.285466 sec : CMD <FA> DEBUG 43.323962 sec : RES <FR_OK:7753:89.49:1:1:1:1

DEBUG 44.325652 sec : CMD <FA> DEBUG 44.364125 sec : RES <FR_OK:7707:88.95:0:1:1:1

DEBUG 45.365697 sec : CMD <FA> DEBUG 45.403926 sec : RES <FR_OK:7662:88.43:0:0:1:1

DEBUG 46.405189 sec : CMD <FA> DEBUG 46.444456 sec : RES <FR_OK:7617:87.92:1:0:1:1

DEBUG 47.446194 sec : CMD <FA> DEBUG 47.484923 sec : RES <FR_OK:7572:87.40:1:0:1:1

DEBUG 48.486671 sec : CMD <FA> DEBUG 48.525188 sec : RES <FR_OK:7527:86.88:1:0:1:1

DEBUG 49.526458 sec : CMD <FA> DEBUG 49.564849 sec : RES <FR_OK:7481:86.35:0:0:1:1

DEBUG 50.566606 sec : CMD <FA> DEBUG 50.605463 sec : RES <FR_OK:7436:85.83:1:0:1:1

DEBUG 51.417406 sec : CMD FN:0 DEBUG 51.437637 sec : RES <FN:0

INFO 51.437751 sec : Rotator direction is normal. DEBUG 51.605916 sec : CMD <FA> DEBUG 51.645789 sec : RES <FR_OK:7406:85.48:0:0:1:0

DEBUG 52.647136 sec : CMD <FA> DEBUG 52.685841 sec : RES <FR_OK:7451:86.00:1:0:1:0

DEBUG 53.687577 sec : CMD <FA> DEBUG 53.726432 sec : RES <FR_OK:7497:86.53:1:0:1:0

DEBUG 54.728213 sec : CMD <FA> DEBUG 54.766770 sec : RES <FR_OK:7542:87.05:1:0:1:0

DEBUG 55.768577 sec : CMD <FA> DEBUG 55.806397 sec : RES <FR_OK:7587:87.57:1:0:1:0

DEBUG 56.807695 sec : CMD <FA> DEBUG 56.847164 sec : RES <FR_OK:7633:88.10:1:0:1:0

DEBUG 57.848939 sec : CMD <FA> DEBUG 57.887459 sec : RES <FR_OK:7679:88.63:0:0:1:0

DEBUG 58.889237 sec : CMD <FA> DEBUG 58.927276 sec : RES <FR_OK:7724:89.15:1:0:1:0

DEBUG 59.928542 sec : CMD <FA> DEBUG 59.967342 sec : RES <FR_OK:7769:89.67:0:0:1:0

DEBUG 60.968534 sec : CMD <FA> DEBUG 61.007566 sec : RES <FR_OK:7814:90.19:1:0:1:0

DEBUG 62.008759 sec : CMD <FA> DEBUG 62.047820 sec : RES <FR_OK:7860:90.72:0:0:1:0

DEBUG 63.049491 sec : CMD <FA> DEBUG 63.088754 sec : RES <FR_OK:7905:91.24:0:0:1:0

DEBUG 64.089177 sec : CMD <FA> DEBUG 64.128310 sec : RES <FR_OK:7950:91.76:0:0:1:0

DEBUG 64.128633 sec : CMD DR:0 INFO 64.128712 sec : De-rotaiton is disabled. DEBUG 65.129180 sec : CMD <FA> DEBUG 65.168602 sec : RES <FR_OK:7952:91.78:0:0:0:0

DEBUG 66.169183 sec : CMD <FA> DEBUG 66.208808 sec : RES <FR_OK:7952:91.78:0:0:0:0

DEBUG 67.209187 sec : CMD <FA> DEBUG 67.249063 sec : RES <FR_OK:7952:91.78:0:0:0:0

DEBUG 68.045412 sec : CMD FN:1 DEBUG 68.065393 sec : RES <FN:1

INFO 68.065435 sec : Rotator direction is reversed. DEBUG 68.249405 sec : CMD <FA> DEBUG 68.289281 sec : RES <FR_OK:7952:91.78:0:0:0:1

DEBUG 69.289468 sec : CMD <FA> DEBUG 69.329572 sec : RES <FR_OK:7952:91.78:0:0:0:1

DEBUG 70.330765 sec : CMD <FA> DEBUG 70.369854 sec : RES <FR_OK:7952:91.78:0:0:0:1

DEBUG 71.371539 sec : CMD <FA> DEBUG 71.410378 sec : RES <FR_OK:7952:91.78:0:0:0:1

DEBUG 72.411710 sec : CMD <FA> DEBUG 72.450415 sec : RES <FR_OK:7952:91.78:0:0:0:1

DEBUG 72.949498 sec : CMD DR:10 INFO 72.949595 sec : De-rotation is enabled and set to 1 step per 10 milliseconds. DEBUG 73.451190 sec : CMD <FA> DEBUG 73.491145 sec : RES <FR_OK:7930:91.53:1:0:1:1

DEBUG 74.492898 sec : CMD <FA> DEBUG 74.531450 sec : RES <FR_OK:7885:91.01:1:0:1:1

DEBUG 75.533217 sec : CMD <FA> DEBUG 75.571648 sec : RES <FR_OK:7839:90.48:0:0:1:1

DEBUG 76.573407 sec : CMD <FA> DEBUG 76.611591 sec : RES <FR_OK:7794:89.96:1:0:1:1

DEBUG 77.613143 sec : CMD <FA> DEBUG 77.652130 sec : RES <FR_OK:7749:89.44:1:0:1:1

DEBUG 78.653868 sec : CMD <FA> DEBUG 78.692080 sec : RES <FR_OK:7703:88.91:0:0:1:1

DEBUG 79.693386 sec : CMD <FA> DEBUG 79.732544 sec : RES <FR_OK:7658:88.39:0:0:1:1

DEBUG 80.733836 sec : CMD <FA> DEBUG 80.772815 sec : RES <FR_OK:7613:87.87:1:0:1:1

DEBUG 81.774582 sec : CMD <FA> DEBUG 81.812808 sec : RES <FR_OK:7568:87.35:0:0:1:1

DEBUG 82.814322 sec : CMD <FA> DEBUG 82.853306 sec : RES <FR_OK:7523:86.83:1:0:1:1

DEBUG 83.855051 sec : CMD <FA> DEBUG 83.893627 sec : RES <FR_OK:7477:86.30:1:0:1:1

DEBUG 84.895384 sec : CMD <FA> DEBUG 84.933758 sec : RES <FR_OK:7432:85.78:1:0:1:1

DEBUG 85.935522 sec : CMD <FA> DEBUG 85.973496 sec : RES <FR_OK:7387:85.26:1:0:1:1

DEBUG 86.974753 sec : CMD <FA> DEBUG 87.013627 sec : RES <FR_OK:7341:84.73:1:0:1:1

DEBUG 88.014911 sec : CMD <FA> DEBUG 88.053883 sec : RES <FR_OK:7296:84.21:0:0:1:1

DEBUG 89.055152 sec : CMD <FA> DEBUG 89.094091 sec : RES <FR_OK:7251:83.69:0:0:1:1

DEBUG 90.095290 sec : CMD <FA> DEBUG 90.134324 sec : RES <FR_OK:7206:83.17:1:0:1:1

DEBUG 91.135518 sec : CMD <FA> DEBUG 91.174882 sec : RES <FR_OK:7161:82.65:1:0:1:1

DEBUG 92.176090 sec : CMD <FA> DEBUG 92.214882 sec : RES <FR_OK:7115:82.12:1:0:1:1

DEBUG 93.037428 sec : CMD DR:0 INFO 93.037520 sec : De-rotaiton is disabled. DEBUG 93.215242 sec : CMD <FA> DEBUG 93.255142 sec : RES <FR_OK:7077:81.68:0:0:0:1

DEBUG 94.256329 sec : CMD <FA> DEBUG 94.295406 sec : RES <FR_OK:7077:81.68:0:0:0:1

DEBUG 94.701430 sec : CMD FN:0 DEBUG 94.727479 sec : RES <FN:0

INFO 94.727521 sec : Rotator direction is normal. DEBUG 95.296147 sec : CMD <FA> DEBUG 95.335594 sec : RES <FR_OK:7077:81.68:0:0:0:0

DEBUG 96.336765 sec : CMD <FA> DEBUG 96.375870 sec : RES <FR_OK:7077:81.68:0:0:0:0

DEBUG 97.377005 sec : CMD <FA> DEBUG 97.416152 sec : RES <FR_OK:7077:81.68:0:0:0:0

DEBUG 98.417617 sec : CMD <FA> DEBUG 98.456455 sec : RES <FR_OK:7077:81.68:0:0:0:0

DEBUG 99.457207 sec : CMD <FA> DEBUG 99.496654 sec : RES <FR_OK:7077:81.68:0:0:0:0

[escribana]

Hi @lpldave

The analysis of the log file shows that all is correct! Look here: RS-LogAnalysis.txt Thus I don't know why you experience a wrong sense in de-rotation while rotation sense itself is correct. I'm out of ideas! Did you try to contact Pegasus support? Looks like your are not the only one -> https://pegasusastro.com/forum/viewtopic.php?t=513

[lpldave]

Thanks for checking. I haven’t seen that particular error report you linked, but I have seen a few others. Looks like it’s basically the same issue I’m having. I’ll try testing this on a Windows machine when I get a chance, and send a message to tech support.

[lpldave]

I was able to get the Windows driver running in a virtual machine under PopOS/Ubuntu. The derotation worked in both directions, so it doesn't seem to be a hardware problem.

[escribana]

Ok, so it seems to be a publication problem (-> Forum): The published Falcon_Serial_Command_Table.pdf seems not to be complete! I don't know why they want to hide certain commands.:-( The only way to reveal these would be the process of a very time consuming reverse engineering of the ASCOM driver.

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