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INDI Library v1.9.7 Released (29 Jul 2022)

Bi-monthly INDI Library released with new drivers and bug fixes.

HELP: Cooling of ASI stops 1.5C before target temp (ASI1600MM)

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I have encountered the problem that INDI/EKOS does not communicate properly with my ZWO ASI1600MM PRO.

If I set cooling (in ccd menu or in EKOS or INDI control panel, no difference) to (lets say) 0°C (or any temp X) then cooling starts and the displayed temperature drops. BUT the displayed (!) temp stops at 1.5°C (or X+1.5°C). However, cooling is still powering (in the attached screenshot at 42%). When I stop INDI and reconnect quickly, I observe the real temperature much below target (here -5°C, since cooling is still disabled the temp rises quickly of course).

This problem is reproducible (restarting INDI server, restarting KStars, reboot, different power supply).

I do NOT encounter this problem under windows (e.g. SharpCap or ASICAP).

Please help me.

I have reported this problem in the Bugtracking system under the #402163:

SUMMARY
Start cooling in CCD Menu. Set to 0°C (or any other Temp x). The temp drops to 1.5°C (or x+1.5°C) displayed in EKOS. However, the temp drops below target uncontrolled (as observed by disconnecting and reconnecting immediately, see screen shot 2)

Temperature control works perfectly under Windows.


STEPS TO REPRODUCE
1. Connect ASI1600MM
2. Set temp to x and press "set"
3. Observe temperature

OBSERVED RESULT
Temp displayed is x+1.5°C

After reconnecting CCD (fast) temp << x (not controlled)

EXPECTED RESULT
Temperature x°C
3 years 7 months ago #32604
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You should probably specify versions of kstars and INDI you are using.

I also have an ASI1600MM Pro, and no issues with cooling/temperature at all (neither with the Versions from my distribution nor the git versions I'm using now). So it seems somewhat specific to your setup.

Can you try the Linux version of ASICAP? Does that one work?
openSUSE Tumbleweed KStars git INDI git
GPDX+EQMOD, CEM60EC, ASI2600/1600/290mini+EFW+EAF
3 years 7 months ago #32613

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Thank you for your response.

I am using KStars build 2018-08-18T08:13:48Z Version 2.9.8
KDE Frameworks 5.18.0
Qt 5.5.1
Ubuntu 16.04 LTS
2.0 GB RAM
Intel CPU T2400 @ 1.86 GHzx2
Graphics Intel 945GM x86/MMX/SSE2
32bit

The camera is connected by USB 2.0 (using the USB 3.0 cable that came with the camera)

I installed ASICAP for Linux and I am observing the same problem (see attachment).

Any suggestions what to do next?

Thanks again for your help!
Last edit: 3 years 7 months ago by Tobias.
3 years 7 months ago #32630
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Disclaimer: I'm also just another user.

But that would confirm it's not an issue of INDI/EKOS, but really the hardware. I would ask ZWO if they have seen this before. They are usually very responsive. If you have another computer around you might try using it on a USB3 port, and maybe in 64bit?
No other suggestions, sorry...
openSUSE Tumbleweed KStars git INDI git
GPDX+EQMOD, CEM60EC, ASI2600/1600/290mini+EFW+EAF
The following user(s) said Thank You: Tobias
3 years 7 months ago #32639

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Thank you. I agree, it has probably something to do with my old laptop.

In the meantime I have checked the camera connected to a Raspberry Pi 3 (USB 2.0) running Mate and the same KStars build. The cooling works fine. Any temperature can be adjusted and i reached in a few minutes (however, the Raspberry crashes when running sequences when I use it in the field, thats why I switched to my old laptop).

Thanks again for your help.

Clear skies
3 years 7 months ago #32642

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