Question One octoprint server doesn't show camera view in cura monitor tab?

[Claghorn 1]

Just curiosity here. I have one instance of octoprint running on a raspberry pi, and when I use cura (4.12.1 appimage) connect to it, the pi camera image doesn't show up in the cura monitor tab. I have another octoprint instance running on an ubuntu 20.4 x86_64 system with a USB webcam, and the same version of cura shows the camera in the monitor tab. The octoprint web interface shows the camera image just fine for both. Just curious if there is some magic I need to do on the raspberry pi to make the camera image show in cura? (not that it is really important since I can use the web interface if I really want to watch the print in progress).

[ahoeben 1,431]

Logs or it didn't happen. I need your cura.log to diagnose this.

[Claghorn 1]

After some experimentation, I'm pretty sure the pi is setup by default so mjpg-streamer is only talking to localhost, so a remote cura can't get the stream, but I'm attaching the cura.log file here in case it is useful.

cura.log

[Claghorn 1]

After looking at the haproxy.cfg file on the pi, I discovered that this url does allow a browser on the remote system to see the webcam on the pi:

 

 

http://solidoodle.my.lan/webcam/?action=stream

 

Where solidoodle.my.lan is the address of the pi on my local lan.

[ahoeben 1,431]

Is the octoprint instance at solidoodle:80 the one that is showing the camera image, or the one that is not showing the camera image?

 

Is the "Show webcam image" checkbox in the "Connect to OctoPrint" dialog checked? This is a "per printer" setting; ie you can have it checked for one printer and not checked for another.

 

Do you use automatic discovery, or did you add the OctoPrint instance manually by its IP/hostname?

Edited November 29, 2021 by ahoeben

[Claghorn 1]

10 hours ago, ahoeben said:

Is the "Show webcam image" checkbox in the "Connect to OctoPrint" dialog checked?

 

DOH! That was it. I never noticed that button, but apparently got a different default in the two different versions. If I turn it on, the image shows up in the solidoodle connection now. Thanks.

 

The discovery versus manual thing was quite puzzling. I think it did discovery the first time I installed the plugin, but then when I started cura again later, the connection was gone and discovery wouldn't find anything on a refresh, so I manually connected and that has been working ever since.