Michael Hamilton replied to the topic 'Advice re Astrophysics Experimental driver' in the forum. 2 months ago

Just for the benefit of anyone who had followed this thread.
Wildi and I have been working through the Park 3 issue and Wildi has made changes to the driver that define Park 3 so that in our set up (AP1100GTO GTOCP4 using RPi3b) it now parks consistently in the AP defined Park3 position (Weights down and scope pointing at South Celestial pole) in our experimental setup.
No changes have been made to the original driver currently available in downloads.

I want to thank Wildi for all the work that he has put in over the past few weeks.

Mike

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Michael Hamilton replied to the topic 'Astro-Physics GTOCP4 driver, lx200ap_experimental.cpp' in the forum. 2 months ago

Hi Mike
I have been working with Wildi and testing the solutions that he is working on.
My original post ("Advice re Astro-Physics experimental driver") a few months ago opened the discussions.
The mount is a AP 1100GTO running GTOCP4 and belongs to my son.
Despite what you say the Park 3 position never worked for my son's set up. The mount always ending up pointing to what, in position, is the same as Park 2. After much time spent trying different approaches my "work around" was starting and finishing in Park 2. So there definitely appeared to be a DEC positioning problem at this Parking point (Park3).
I am no expert and this is not my scope either but as it is now resident at my place I have had the opportunity to try to sort the parking issue.
I too felt it was difficult to define the specific Park 3 in terms of Alt/Az as the HA was not defined.
Unfortunately I don't have the technical expertise that you guys have and my gear uses the EQMod driver.
What I can confirm is that in the set up that we are using (AP 1100GTO and RPi3b) using Wildi's alterations the DEC issue is sorted and it will now Park to the Park 3 position but does require to be unparked from Park 3 rather than last parked for a consistent operation.

From a practical viewpoint I could have continued using Park 2 however it is nice for the driver to work as intended in our setup and I want to thank Wildi for his patience and assistance in walking me through each step.

Hope this helps
Best regards,
Mike

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Michael Hamilton replied to the topic 'Advice re Astrophysics Experimental driver' in the forum. 2 months ago

OK all done.
Just checking that you don't want me to create a clone as per the INDI repo instructions.

I have an error code on a Cmake . Here is the last part of the terminal code

mike@mike-pi:~$ mkdir -p ~/Projects
mike@mike-pi:~$ cd ~/Projects
mike@mike-pi:~/Projects$ mkdir -p ~/Projects/build/indi-core
mike@mike-pi:~/Projects$ cd ~/Projects/build/indi-core
mike@mike-pi:~/Projects/build/indi-core$ cmake -DCMAKE_INSTALL_PREFIX=/usr -DCMAKE_BUILD_TYPE=Debug ~/Projects/indi
CMake Error: The source directory "/home/mike/Projects/indi" does not exist.
Specify --help for usage, or press the help button on the CMake GUI.
mike@mike-pi:~/Projects/build/indi-core$ make -j4
Is this OK to proceed
I have not entered the sudo make install

So if the above is OK. We are ready for the next step :)

Mike

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Michael Hamilton replied to the topic 'Advice re Astrophysics Experimental driver' in the forum. 2 months ago

Hi Wildi,

Happy to give it a go. Once I have got up to speed I will get back to you.

Cheers,
Mike

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Michael Hamilton replied to the topic 'Advice re Astrophysics Experimental driver' in the forum. 2 months ago

Hi Wildi,
In a word "no" but happy to learn. Any tips where I can upskill? I will start with GIThub?
Crazy busy at work but can look at this as a replacement for gym, socialising, pub life, going out for meals etc, etc, etc. :)

I appreciate the pointers in the error log.

Mike

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Michael Hamilton replied to the topic 'Advice re Astrophysics Experimental driver' in the forum. 2 months ago

Hi Wildi
I did a bit more troubleshooting and it appears that the settings for Park 2 and Park 3 are the same. So when when manually set in the Park 3 position it still thinks that it is in the Park 2 position and this is shown on the sky chart. To my simplistic view it would be a matter of resetting the mount co-ordinates for Park 3 to the proper AP Park 3 which is weights down and Dec 90 deg. All the other Park positions work perfectly as described by the Astrophysics manual (1,2 and 4).
Hope that this is of some help :)

Mike

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Michael Hamilton replied to the topic 'Advice re Astrophysics Experimental driver' in the forum. 3 months ago

Hi Wildi
No hurry here. I appreciate the help.
Stay safe.
Mike

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Michael Hamilton replied to the topic 'Advice re Astrophysics Experimental driver' in the forum. 3 months ago

Hi Wildi

As you say previously this is what happened

bring the mount manually to Park 3 position (only for the first time, e.g. a cold start)
slew with INDI the mount and it goes to the correct position, the star is "on the" crosshair (more or less)
park the mount again with INDI and it reaches HA = +/- 6 hours but Dec = 0 degree
unpark it again and slew it with INDI and the final position is correct again
park it again with the same result as in step 3

Now however when the mount is set at AP Park 3 it shows the position on start up to be the HA = +/- 6 hours but Dec = 0 degree position
Despite switching off for a while I cannot get it to work as per the cold start described above. So bearing this in mind the following described the debug log attached

Mount is in the HA = +/- 6 hours but Dec = 0 degree position on start up.
Kstars is started and the astrophysics profile started.
Indi popup starts
I open up the astrophysics mount tab and connect (setting the "last parked" does not seem to make a difference so it is set to "Last parked" position
The mount position appears on the Star Chart to be correct for the HA = +/- 6 hours but Dec = 0 degree position
To confirm it knows where it is I do a load and slew of an image of miaplacidus and using astrometry.net this solves and slews to miaplacidus on the star chart.
I press park (set to AP Park 3 position) but the mount parks at the HA = +/- 6 hours but Dec = 0 degree position rather than the 90 deg dec position

The indi driver is indi_lx200ap_experimental
The mount driver is VCP4-P01-11

Let me know if there is anything you need me to try

File Attachment:

File Name: log_15-21-59.txt
File Size: 540 KB


Cheers

Mike

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Michael Hamilton replied to the topic 'Advice re Astrophysics Experimental driver' in the forum. 3 months ago

Hi Wildi,

Finally managed to get the mount set up indoors as the weather is still awful. So I am in Australia in Brisbane. The setup is AP1100 with GTPO CP4 controller. I am using a standard RPi 3b with latest version of KStars and Ubuntu Mate 18.04. I am using astrometry.net offline as solver. I test using a load and slew protocol usually pointing to somewhere not too far from the pole like miaplacidus or acrux.
The mount is parked at the standard AP Park 3 (Dec is at 90.00). The driver is set to unpark from last parked position and to park to Park 3.
The good news is that when the scope is started it knows where it is and will slew to the correct position. However when set to park it goes to the correct position on Azimuth but still goes to 00.00 Dec which means that the scope is at 90degrees in dec to the proper AP Park 3.
When parked in this position and asked to slew again it knows where it is but always parks to 00.00 in Dec.
As I said before this is not a problem in practice. I set up in this Dec 00.00 position and everything works fine.
So I don't have any complaints, it is just that I suppose for completeness, when set to park at park three it should be the AP Park 3.
Let me know if you want me to do anything else or send in logs. I will leave the scope set up and see if we can sort it out if you have the time.
It is still a great driver. Thanks for the work that you have done!

Mike

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Michael Hamilton replied to the topic 'Advice re Astrophysics Experimental driver' in the forum. 3 months ago

Hi Wildi,

I appreciate the work that has gone into the driver. I will get back to you once I have put it on the test bed and I will get you all the info that you need.
The weather is so bad that I will test indoors.
The mount is definitely an AP 1100GTO. Unfortunately not mine! :)

Best regards,
Mike

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Michael Hamilton replied to the topic 'Advice re Astrophysics Experimental driver' in the forum. 3 months ago

Hi Wildi

Wow long time since I posted this. I was unable to resolve the issue at that time and have not had another opportunity to attempt a solution.
I still am the custodian of the AP1100 so I can try a set up but I am really time poor at the moment ( I work in health planning and coronavirus has basically taken out any spare time).
I almost certainly will get a chance to set it up again in the next week. I don't use the AP1100 myself so the urgency is much less and as I said this really does not affect any other aspects of the mount just a nuisance really.

Let me know if you have any ideas as happy to work through the problem time permitting.

All the best,

Mike

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