×

INDI Library v1.9.8 Released (29 Sep 2022)

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

Main ZWO imaging camera gets commanded to use ZWO guiding camera exposure time

  • Posts: 1944
  • Thank you received: 418
I think I found out what the problem is: the camera doesn't work well on a USB2 port on Linux (pardon the sarcasm but we did hear this before with ZWO, didn't we?). I found this out tonight when I plugged the camera in to one of the USB2 ports on my raspberry pi 4. When I took an image, it was completely black with one white column, exactly as I saw a couple of weeks ago when I thought that the driver was bad. When I disconnected the USB cable and the power from the camera, reconnected the power and plugged it into a USB3 port, it worked again and it kept on working all night long.

The mini-pcs that I used have USB ports that in principle work as USB3 ports but may switch to USB2. So I think that in some cases it may have immediately switched to USB2 when the camera got plugged in, resulting in black images and image download issues. And in some cases it would start out as USB3 and then switched to USB2, resulting in Ekos reporting both exposure times for the ASI6200 camera.

I have reported this to ZWO and asked them to check and verify my theory. If they can confirm it then hopefully they can fix it in a firmware update. In any case, from now on I'll make sure to only use USB3 ports for this camera.


Wouter
Wouter van Reeven

ASI6200MM and 7 slot 2" filter wheel with a SkyWatcher Esprit 80 ED on a SkyWatcher HEQ5-Pro
ASI1600MM-Pro Cooled and 5 slot 1.25" filter wheel with an 8" TS Ritchey-Chrétien on a SkyWatcher EQ6-R
2 years 5 months ago #55406

Please Log in or Create an account to join the conversation.

  • Posts: 1117
  • Thank you received: 182
All the inputs to my mini-PC are routed through a powered USB3 hub. Once it works, I do not change it anymore. That is the simplest way to get reproducible results.

Jo
Atlas Pro AZ-EQ, ASI1600MM-Pro, ASI120MM-S, ES102ED, WO-Z61, Nikon D3300, ASI-EFW, ZWO LRGB,Ha,O3,S2 filter set
2 years 5 months ago #55407

Please Log in or Create an account to join the conversation.

  • Posts: 1944
  • Thank you received: 418
Thanks for the tip. I try to keep my setup as simple as possible so I prefer not to use an additional hub. With the RPi4 the camera works so I'll stick to that.

Having said that, I think that ZWO should look into this. The camera works without any issues with a USB2 port on Windows.

Anyway, the problem is solved and if any other Ekos user ever runs into the same problem then we can point them to this thread.


Wouter
Wouter van Reeven

ASI6200MM and 7 slot 2" filter wheel with a SkyWatcher Esprit 80 ED on a SkyWatcher HEQ5-Pro
ASI1600MM-Pro Cooled and 5 slot 1.25" filter wheel with an 8" TS Ritchey-Chrétien on a SkyWatcher EQ6-R
2 years 5 months ago #55447

Please Log in or Create an account to join the conversation.

Time to create page: 0.146 seconds