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INDI Library v2.0.6 is Released (02 Feb 2024)

Bi-monthly release with minor bug fixes and improvements

Pegasus DMFC: No Backlash setting [SOLVED]

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Hi,
I just installed my new Pegasus DMFC. It works with the indi_dmfc_focus Version 1.0. So I tried to setup the backlash... BUT there is no setting for it. On the INDI webside there should be a button for backlash.

     

Perhaps someone can help me to find the settings for backlash.

I'm using stellarmate with the current updates (kstars 3.5.3, Indi 1.9.0)
2 years 9 months ago #72377
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+1
It used to be there, but is gone since a while. I still have it defined in my profile, so I get a warning on connect
2021-06-19T21:33:29: [WARNING] Focuser backlash must be enabled first. 
But as for you, there's no button to enable/set it anywhere :(
2 years 9 months ago #72486

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Maybe you need to use "Pegasus FocusCube" and not "Pegasus DMFC" ?
2 years 9 months ago #72487

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Hmm, I seem to remember that the two differ in some commands, and the DMFC doesn't work with that driver. But I'll have a try (after tonights session).

Though I wouldn't understand why it has been removed from the DMFC driver (I've used it for 3 years or so, with BL).
2 years 9 months ago #72488

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I first tried the FocusCube driver but it was not possible to connect to the device. I think this is a correct behaviour, because in that case I use a DMFC and not a Focus Cube. I use this combination:
www.astroshop.de/motoren-steuerungen/peg...ermotor-dmfc/p,53309
www.astroshop.de/motoren-steuerungen/peg...2-universal-/p,63045

The dmfc driver works well with the setup except the fact that backlash (and backward/forward) doesnt exist.
2 years 9 months ago #72504

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@jasem
The focus cube and the DMFC are two completely different devices and so are the drivers, you can’t use the focus cube driver with a bare motor, you need the DMFC driver, and the guys are correct, the backlash setting has gone….
Last edit: 2 years 9 months ago by AstroNerd.
2 years 9 months ago #72506

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Is it possible to (re-)integrate the backlash? Maybe it would be good to also (re-)integrate the "normal/reverse" function? It is still shown on the INDI webside indilib.org/focusers/pegasus-dmfc.html
 
2 years 9 months ago #72508
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OK, some additional info.  I compile my stuff as RPM packages, and keep them around for a while.  So I used the old versions to connect to the DMFC using
indiserver indi_dmfc_focus
followed by some
indi_setprop "Pegasus DMFC.CONNECTION.CONNECT=On"
indi_getprop
Old versions still list both settings:
Pegasus DMFC.FOCUS_REVERSE_MOTION.INDI_ENABLED=Off
Pegasus DMFC.FOCUS_REVERSE_MOTION.INDI_DISABLED=On
Pegasus DMFC.FOCUS_BACKLASH_TOGGLE.INDI_ENABLED=Off
Pegasus DMFC.FOCUS_BACKLASH_TOGGLE.INDI_DISABLED=On
Pegasus DMFC.FOCUS_BACKLASH_STEPS.FOCUS_BACKLASH_VALUE=1
The last version that does this is called libindi-1.9.0-21_gd9a5e309, i.e., based on commit d9a5e309 as of March 11.
The following one i have, 1.9.0-92_gbd9110b4 (April 1), has the device renamed to "Pegasus DMFC Device", but I cannot get it to connect to the DMFC.  Next one is 1.9.0-106_g95a492dc (Apr 18).  There the name is back to "Pegasus DMFC", it connects, but both REVERSE and BACKLASH settings are gone.
Hope that makes it easier to pin down the guilty commit.
 
2 years 9 months ago #72510

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Is it possible to get this fixed in INDI 1.9.1? I'm planning to buy another Pegasus Focus Kit for my DMFC... I dont know if I would need the reverse and backlash function in the new setup...
2 years 9 months ago #72607

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I just tried indi 1.9.1, still the same, no backlash and reverse button.

Was the change only in the nightly?
2 years 9 months ago #72721

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This is very odd, I just tested here and can see both backlash and reverse. Make sure you don't have anything lurking in /usr/local/bin
Last edit: 2 years 9 months ago by Jasem Mutlaq.
2 years 9 months ago #72778

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Yesterday I tried both the stable channel (with all updates so far, I'm using stellarmate) and the beta channel. Same outcome: no backlash and reverse.
2 years 9 months ago #72786

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