Edwin Hekman replied to the topic 'Canon DSLR connection issue' in the forum. yesterday

That appears to have solved the problem. Thank you very much for your help, Wouter.

Ed

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Edwin Hekman replied to the topic 'Canon DSLR connection issue' in the forum. yesterday

File Attachment:

File Name: ExecutionSequence.txt
File Size: 6 KB
These are the instructions in the link:

sudo add-apt-repository ppa:mutlaqja/libgphoto2
sudo apt-get update
sudo apt-get install -y indi-libgphoto2
sudo apt-get update

I executed those commands.

File Attachment:

File Name: ExecutionSequence_2019-11-11.txt
File Size: 6 KB


What did I miss?

Ed

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Edwin Hekman replied to the topic 'Canon DSLR connection issue' in the forum. yesterday

After I executed this command:
sudo apt-get install software-properties-common

Then the add-apt-repository command was successful.
But when I executed:
sudo apt-get install -y indi-libgphoto2

I get:
E: Unable to locate package indi-libgphoto2

Ed

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Edwin Hekman replied to the topic 'Canon DSLR connection issue' in the forum. yesterday

Thanks for the response. Now I recall the discussion about this...

When I execute:
sudo add-apt-repository ppa:mutlaqja...

I get:
sudo add-apt-repository: command not found

Ed

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Edwin Hekman created a new topic ' Canon DSLR connection issue' in the forum. 2 days ago

I am very happy to see that the indi driver for the Canon DSLR in the 3.3.7 release works reliably. The problem I am experiencing now is that when the camera is connected to the RPi, it is automatically mounted as a USB storage device which prevents SM from connecting to it. There is a short window of time after the physical connection is made in which the SM connection can be done. Does anyone know how to prevent the automatic mounting of the camera by the OS? I assume this is a Ubuntu issue.

Ed

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Edwin Hekman replied to the topic 'At an impasse with CGEM/NexStar USB' in the forum. 3 weeks ago

It appears that the source of the problem may have been an AC to 12VDC charger for a Lithium Ion battery that may not be completely isolated from the AC lines. The problem disappeared after disconnecting the charger and operating only from the battery. It is now running without problems from a good quality AC to 12VDC adapter that is properly isolated from the AC circuit. The Stellarmate is operating from a 12V to 5V converter with the goal of portable operation from a 12V battery only.

I apologize for exercising folks with an issue caused by my poor quality system. But at the least it has been an excellent learning experience for me and I hope this experience will save trouble for someone else interesting in setting up a portable system. Thanks for all the help in gaining a better understanding of the Stellarmate system and the Celestron equipment.

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Edwin Hekman replied to the topic 'At an impasse with CGEM/NexStar USB' in the forum. 4 weeks ago

A ticket has been opened.

Ticket Details
Title CGEM/NexStar+ USB communication failure when connected to StellarMate
Reference EOWB-000488
Product StellarMate
Category StellarMate App

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Edwin Hekman replied to the topic 'At an impasse with CGEM/NexStar USB' in the forum. 4 weeks ago

I thought the ASCOM driver was a Windows driver. Is there a version that works with the Stellarmate? If so, how can it be selcted?

There appear to be 2 drivers that may be associated with the CGEM mount. One is listed as 'Celestron CGEM', and the other is listed as 'Celestron NexStar'. Which one should I be using? The same problem is seen with both drivers.

After performing a series of diagnostic steps requested by Celestron Technical Support, they had concluded from my description of the problem and the results of the diagnostic steps, that the problem must be with the Stellarmate software. Chris, you have been extremely helpful with investigating the issue. And the logs support my conclusion that although the problem is experienced when the mount is connected with the Stellarmate, the failure is in the communication between the Celestron mount and the Celestron hand controller. I am not yet willing to give up on Stellarmate because it is the best tool for my requirements. And I am not ready to dump the CGEM and purchase a different mount. As a retired engineer with hardware design and software development and testing experience, I know that this is a solvable problem and one I can solve if I have the appropriate tools. Celestron has agreed to provide me with a NexStar hand controller with a serial port to test. In addition to that, I plan to probe the Celestron internal communication bus with an oscilloscope to see if there any apparent electrical changes when the Stellarmate is connected. Beyond that, I would need guidance and diagnostic tools from Celestron to investigate the issue. It remains to be seen how much support they would be willing to provide.

Chris, Thank you for your help. Let me know if you have any connections with Celestron that might have the knowledge to assist with this investigation.

Ed

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Edwin Hekman replied to the topic 'At an impasse with CGEM/NexStar USB' in the forum. 4 weeks ago

That confirms my earlier conclusion that the connection to the RPI causes a failure of the communication between the mount and the HC. I have opened a topic on the Team Celestron forum.
teamcelestron.com/viewtopic.php?f=69&t=1551

Ed

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Edwin Hekman replied to the topic 'At an impasse with CGEM/NexStar USB' in the forum. 4 weeks ago

Chris,

Here is a new log file with the procedure you requested. It still looks like the mount does not report the firmware versions correctly. Is this helpful?

Ed

File Attachment:

File Name: log_22-43-14.txt
File Size: 48 KB


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Edwin Hekman replied to the topic 'At an impasse with CGEM/NexStar USB' in the forum. 1 month ago

Chris,

Thank you for the detailed information about the functionality of the different ports. I had not been able to find that information anywhere.

That opens some questions about the EQMod software. Does it work only with mounts that have the required computational functions in the mount head? Or does it provide this functionality in the software?

Ed

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Edwin Hekman replied to the topic 'At an impasse with CGEM/NexStar USB' in the forum. 1 month ago

I will be out of town until 10/12 so I will not be able to do any testing on the RPI/mount until then.

There was a question about what I meant about the connection from the NexStar hand controller PC port to the mount. The 2 ports - HC port and AUX port - on the mount serve identical purposes. The HC and GPS can be connected to either port and the HC can also be connected to another port on the SkySync GPS. My question is about the internal connection between the PC port on the HC and the cable on the HC that connects to the mount. it obviously can't be a direct connection because the PC port is a USB input and the connection to the mount is something else - like RS232 serial but with the levels translated to 5V only instead of the bipolar signals of an RS232 port. But there is definitely some interaction between those 2 connections. And what I have heard about bypassing the HC and connecting the PC directly to the mount suggests that the communication from the PC is equivalent whether the PC is connected to the HC PC port or the mount HC port. So the HC must simply be passing traffic between the two ports. Is this correct?

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Edwin Hekman replied to the topic 'At an impasse with CGEM/NexStar USB' in the forum. 1 month ago

Sorry. It was not intended to be a snide remark but a statement of the difficulty of resolving an interoperability problem. The stellarmate team has been exceptionally responsive to questions and comments. When I first tried the RPI4 and experienced problems working with my Canon DSLR, Jasem connected with my SM using TeamViewer to diagnose the problem.

It sounds like the log confirms that the communication between the RPI and the hand controller appears to be working correctly but there is a problem with the communication between the hand controller and the mount head motor controller.

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Edwin Hekman replied to the topic 'At an impasse with CGEM/NexStar USB' in the forum. 1 month ago

For several years I worked on interopability testing in the wireless communications field. This looks like a classic case where both sides of the communications link work with everyone else's equipment, but they don't work together. Getting the teams on both sides to work together to investigate and resolve a problem experienced by one retail customer is highly unlikely.

I would like to know if any other people have used StellarMate with a NexStar USB hand controller. I suspect that most folks use the NexStar hand controller with an RJ11 port that requires an external USB to serial RS232 converter.

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Edwin Hekman replied to the topic 'At an impasse with CGEM/NexStar USB' in the forum. 1 month ago

Firmware Versions
HC:GEM 5.31.9102
MC:6.51 6.51

I reflashed the sdcard. The date in the logs is not correct.

All verbose logging was enabled.

Note that the error, "No Response 16", is displayed on the hand controller before kstars is started. When the RPI4 is started, kstars starts automatically. I terminated kstars, connected the hand controller to the RPI4, observed the error, cleared the error, then restarted kstars.

The error does not occur when the hand controller is connected to my Windows laptop. Because the error occurs when the hand controller is connected to the RPI4 when kstars is not running, it would seem that the problem is with the physical connection and unrelated to the kstars/INDI software. Can we connect with the RPI4 design team to ask for assistance?

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