Hi all,

first of all I am new to this forum. I am a complete linux noob but I love all this great astro projects for raspberry pi so I joined the club. I have to say that you are doing a great work here!

I am running KStars Version 3.3.6 with Ekos on the Astroberry server 1.1.0, MATE Desktop Environment 1.16.2 on a Raspberry Pi 3 Model B.

With Ekos I am running my Nexstar 4SE, my Canon EOS 1300D and a ZWO ASI 120 MC-S.

Everything is running fine, alignment, solver, polar alignment, mount control and imaging - except the guiding. I want to use PHD2 for guiding, but even if I try with the internal guider of Ekos it fails. When I start the guiding process PHD2 selects a star and tries to calibrate. On every calibration step the INDI driver plots the message: [WARNING] PULSE STILL IN PROGRESS, POSSIBLE MOUNT JAM. After 60 calibration steps PHD2 stops the process with the message "RA Calibration Failed: star did not move enough".

I am sure the pulse guiding command is not working, because I cannot hear or see that the mount is moving when the calibration of PHD2 or the internal guider is running. I also get no reaction if I use the manual guide tool of PHD2 to control the mount. I know that the movement rate should be so slow that it is hard to see on the screen, but I even cannot hear any sound from the motor of the mount. In the INDI Control Panel the option "Use Pulse Cmd" is turned On.

If I am using Kstars or Ekos to control the mount everything works fine. I played around with backlash compensation and other options of the guider but nothing seems to make the mount move. I also tried with tracking ON and OFF, it seems to make no difference.

After installation I ran the software updater of the OS once and installed all updates, including updates for KStars and INDI drivers. When I run the software updater now, it does not show any updates for KStars or INDI drivers only for Ubuntu and other applications.

I am looking forward for any helpful hint!

Best regards,

Ben

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