My experience is that the start of each shot stops the cooling fan for 2/3 seconds, but does not turn off the cooling peltier. The temperature remains constant. However the behavior is anomalous.

I use short exposures so camera stops cooler every few seconds. Where to get previous version for arm64 driver? Anyone can upload indi-toupbase_*.arm64.deb file for previous version of INDI?

I see the "cooling stops" behavior also with my Risingcam 571c. I mentioned it in another touptek thread - interesting to know that it's not just me. I cannot see any sign of a command going to the cooling system in any log, so I'm not sure how to formally report the issue.

In my case, the sensor temperature does rise when taking short exposures. Last night I took flats with a 2-second pause programmed between each exposure and that helped some. If I watch the INDI panel, cooler power briefly shows 0% at the start of each exposure, and both the fan and the TEC LEDs turn off on the camera itself.

I found and install previous version of driver but when I try to run it I get `undefined symbol` error ((

Hi
You have to build the previous version against the correct indi version.
@nou has -excellent- scripts with git version numbers to do this. Maybe he could help?

e.g. the script with the git commits for the current stable version is here:
gitea.nouspiro.space/nou/astro-soft-buil...build-soft-stable.sh

You would need to substitute those commits for the commits corresponding to the version you want.
Cheers and HTH

With the latest update the cooling works fine again... thank you very much!!!

Corrado, do you mean update for x64_86? No changes for ARM64 platform

yes, sorry... Ubuntu 22.04 lts, x64_86

By 'latest update' do you mean the current nightly build? I am also on ubuntu 22.04 lts on an x64_86 (Beelink mini-pc). With my Risingcam 571c and the current nightly, the cooler still turns off at the start of every sub.

This is looking like something the SDK is doing.

I will let Touptek know so they can look into this issue.

short exposure means the sensor is working at high frequency so the temperature rises for sure.

My suggestion is always to use the lowest temp @ short exposure working state as the temperature limit for your entire shooting session.

But your method is also very good.

Thank you Karas. The issue is that the TEC system, including the fan, shuts completely off for a second or so at the start of every exposure. This behavior is new.