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Issues using Pixy with ODROID XU3

Pixy Software
#1

Hi all,

So I’m trying to use my Pixy with an ODROID XU3. When I connect the Pixy it is detected by PixyMon and an image is displayed of what the camera sees, however this quickly disappears and is followed by the message “error: Pixy has stopped working.” This is followed by another “Pixy detected.” message, however the image is not shown this time, then “error: Unable to connect to device.” appears. This process then continues, with the image showing for a glimpse the first time the Pixy is detected and the following messages looping over:

Pixy detected.

runprogArg 8 1
response: 0 (0x0)
error: Pixy has stopped working.
Pixy detected.
error: Unable to connect to device.
Pixy detected.
runprogArg 8 1
response: 0 (0x0)
error: Pixy has stopped working.
Pixy detected.
error: Unable to connect to device.

Can anybody help me with what could be happening here? I have connected the Pixy to my laptop (running Windows) and everything works fine.

Thanks heaps!

Jack

#2

Hello Jack,
Interesting! It’s difficult to tell just by the messages. You’d have to attach a debugger to PixyMon and look at the USB exchange. I’m happy to answer any questions, or I can ask around here if I don’t know the answers.

Edward

#3

Hi Edward,

Sorry about the delayed reply! So I tried to look at the USB exchange, but turns out the kernel image I’m using doesn’t have the usbmon module, which made it a bit more difficult. However, I have managed to get around the problem by quickly trying to set a signature. As soon as I clicked the button to set the signature the video feed became stable and the Pixy didn’t drop out again until next time I started up Pixymon, so not sure what’s going on there.

For my project though I’m planning to use the Python API and there didn’t seem to be any problem with that at this point, so I may be able to get away it. If the problem does continue though I’ll be sure to let you know.

Thanks,
Jack

#4

Hello Jack,
You might try the latest PixyMon source. We checked in several changes last week, some of which might have a chance of fixing your issue. In particular, there was an issue on a Linux machine that was similar to what you describe and was fixed. Let me know what you find.

Edward

#5

Hi Edward,

I tried installing the latest PixyMon source (just removed the original “pixy” folder and followed the installation instructions again), unfortunately though the problem is still occurring. This time however I ran PixyMon from the terminal, and when the error occurred I noticed the following message was displayed:

Gtk-Message: (for origin information, set GTK_DEBUG): failed to retrieve property GtkRange::activate-slider' of typegboolean’ from rc file value “((GString*) 0x1a3830)” of type `GString’

Not sure what this means or if it is any help?

Cheers,
Jack

#6

Hello Jack,
I’m not sure what the message means, but we haven’t seen it running various versions of Ubuntu. It doesn’t sound related to the USB communications.

Edward

#7

Hi Jack,
Sorry, my bad. The PixyMon changes were in a different branch. They’ve been merged into master branch now. Please give it another try again you get a chance.

Edward

#8

Hi Edward,

I just reinstalled PixyMon and the problem has been fixed! Thanks heaps for the help.

Cheers,
Jack