Csaba Kertesz replied to the topic 'Synscan coordinates differ from those of the solver' in the forum. 2 months ago

I checked the video and did some math with the results there, but I have no idea why RA update does not work. To be more weird, the results there do not make any sense. The RA jumps like random offset after syncing, but its update is identical to Dec in the protocol. I think this is a bug in the handset firmware, but strangely enough it works with my AltAz mount with V3 handset.

@Frank: KStars 2.9.6 was released a few days ago. Can you download to your Mac give a try? edu.kde.org/kstars/#download
I am the most curious what are your results now?
- Syncing works.
- RA does not sync, Dec syncs properly.
- None of them syncs properly.

If Frank is lucky, it is possible that this bug is present only in V4 handsets (kross has this version), but not in V3. I and Frank have this version.

Frank, let us now your experiences.

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Csaba Kertesz replied to the topic 'Synscan coordinates differ from those of the solver' in the forum. 2 months ago

Frank, please wait a bit, the issues are not fixed yet as you can read in the previous two posts.

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Csaba Kertesz replied to the topic 'Synscan coordinates differ from those of the solver' in the forum. 2 months ago

kross wrote: Your change was near identical to what I tried. Same result, too. Dec gets updated fine, but RA either has some really weird offset, or doesn't update at all. :(

Maybe Frank will have better luck with his mount.


There are two things in the Sync() function: position reset and the actual sync command. Can you do a quick check what happens if you remove the position reset command? Does it fix the situation? As I remember, the position reset was not there, but it was needed for Alt/Az mounts to work properly. It is possible that it is unnecessary for EQ mounts.

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Csaba Kertesz replied to the topic 'Synscan coordinates differ from those of the solver' in the forum. 2 months ago

I created a fix for this issue ( github.com/indilib/indi/pull/598 ) and it was merged. It will appear tomorrow or after that in the PPA updates.

Disclamer: I don't have a Synscan cable nor an EQ mount. My change _should_ work out of the box, but no guarantee as it was not tested. Please test first carefully, do manual syncs without plate solving and see if +/- RA/DEC coordinates are synced correctly to the handset. And report back the results in any case.

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Csaba Kertesz replied to the topic 'Synscan coordinates differ from those of the solver' in the forum. 2 months ago

gbeaton wrote:

kross wrote: I played with this some over the weekend. I changed the code so it sends RA/Dec instead of Alt/Az. The Dec axis gets updated just fine, but the RA axis wouldn't update. Not sure what's going on. I will have to mess with it some more.


By the way, I hope you guys can keep this driver compatible with the V3 hand controller because I discovered that older HEQ5 mounts cannot upgrade to the V4 version. Thank you for your work on this!


The driver is compatible with V3/V4 handsets, just be sure to upgrade the firmware to something recent V3.37+/V4.37+.

Although I don't have a cable I plan to submit a fix for the syncing issues, but I am very busy these days.

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Csaba Kertesz replied to the topic 'Synscan coordinates differ from those of the solver' in the forum. 2 months ago

I don't have Synscan cable right now because I killed the previous one. The only thing you can do to record a log of the Synscan driver and attach here to have a look. At least I don't have any other idea how to progress further. You can change the logging levels before you connect to the INDI server in Ekos. There is a "Log" button where you can make verbose the logging. Then do a minimal test case where you demonstrate that the solution coordinate is not synced properly, stop the INDI and upload the log here.

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Eric thanked Csaba Kertesz in topic Re:Perfecting the Scheduler 2 months ago
Csaba Kertesz replied to the topic 'Re:Perfecting the Scheduler' in the forum. 2 months ago

@TallFurryMan: Writing tests for the KStars GUI is difficult, I recommend to forget about it for the scheduler.

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Csaba Kertesz replied to the topic 'Synscan coordinates differ from those of the solver' in the forum. 4 months ago

Ok. So the syncing does not work by some magical reason.

I would like to ask to test some things without clear sky:
1. Start your system.
2. Sync your handset inside KStars _without plate solving_. In KStars, go to a sky position, open a context menu, inside Synscan submenu, there is the Sync option. Select it and verify if the Synscan points to the new synced location.
3. Try the previous step in different parts of the sky.

Let us know if this kinda manual syncing works well or if it is does not work for some kind a RA or DEC coordinates. I am pretty sure now what is the problem, my current bet is that syncing does not work with negative RA and DEC values, but it works fine with positive RA/DEC values. My location and sky visibility does not have negative RA/DEC values therefore they were not tested. Let me know if my guess is right!

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Csaba Kertesz replied to the topic 'Synscan coordinates differ from those of the solver' in the forum. 4 months ago

Oh then it should work. Let us know if the firmware update fixed the problem.

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Csaba Kertesz replied to the topic 'Synscan coordinates differ from those of the solver' in the forum. 4 months ago

1. Are you on negative GMT offset (timezone)?
2. Are you on Northern or Southern hemisphere?

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Csaba Kertesz replied to the topic 'Synscan coordinates differ from those of the solver' in the forum. 4 months ago

Ok. Can you check the KStars version exactly on your Mac? The link what you linked shows 2.8.8 what is more than a year old version.

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Csaba Kertesz replied to the topic 'Synscan coordinates differ from those of the solver' in the forum. 4 months ago

Yes, something is completely wrong in your use case.

First of all, if you don't plan to control your mount with hand (hand controller), your setup can be simplified by using a direct cable (EQDir) to the mount, ditch the Synscan handset and use EQMod INDI driver what is much more feature-rich.

Regarding your problems, the screenshot is not so important, the most important things to answer:
- What is your INDI version on your laptop?
- What is the Synscan handset firmware version?
- After you connect the handset to the laptop with INDI. Does the handset show the correct time and timezone (GMT)?

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Csaba Kertesz replied to the topic 'Synscan coordinates differ from those of the solver' in the forum. 4 months ago

Which version of INDI do you use? Official Ubuntu, Jasem PPA or built from source? If the answer is the first, update your system with Jasem PPA or built from source. The Synscan driver was completely broken, I fixed it some months ago.

Do you use your mount directly from your laptop or remotely via Raspberry Pi? At least there was a serious bug what I fixed a week ago. If you use your mount with Raspberry Pi (or similar arm minicomputer) in a place with negative timezone (GMT offset), the Synscan driver was broken. This fix is in git (source repo) and only landed in the nightly PPA:
launchpad.net/~mutlaqja/+archive/ubuntu/indinightly

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