DuetLapse available for Alpha testing

arhi

@Danal hahahahahhaha

I have to say, I learned to "take a walk" .. it is the most effective one, 3d printers help big time here as I stop go fiddle with printer, return fresh :), kids arrived few years ago, they help even more ..

print("here") is my favorite debugging tool in "embedded" systems that I do as a hobby, on my day job it's rather useless so I never do it. On the other hand my daily job debugging in 90% cases the best I can do is crash a server and then go trough core, or follow the JAM log and go trough core. In the rare 10% of cases gdb connect to live server helps (my daily job is a verification and fixing of bugs in mysql server, I don't work on new features). TBH I'd love to use some good IDE for this but it's not that simple, I for e.g. need to debug a problem on 20+ cpu machine with a terabyte of RAM, big O will supply that machine in our lab in Norway for the duration of the work, or our lab in murica or ... but no way I will have that box at home :(. It might be possible that VS these days knows how to go through 2 layers of VPN and connect to a remote box trough access box and do this, but I have to say I have no clue how to set that up and since gdb works, even over shady network from screen I bite the bullet and do it that way. It's not too bad when you get used to it, not as easy as gui but works.

zapta

@arhi said in DuetLapse available for Alpha testing:

u talking about +++ situation?

Not related to +++. It's a trick question. Here is a hint: how the semantic of ' x(y) ' can be different than the semantic of ' x (y) ' ?

(the single quotes are not part of the code).

arhi

@zapta does sound vaguely familiar but no clue really. I assume it is most likely something obvious but my brain don't do tricks today and I don't think it's fair I go duckgogo-ing now to find a solution

luckyflyer

@Danal I've got the numpy required error on my Duet pi, you said in a previous post that "I've updated the script to show the required commands, if numpy is not found." I'm on your Duetlapse github wiki, usage section. I don't see any commands for if numpy not found. Where do I find them?

Also I've loaded everything onto a standalone pi and everything works except there is no video. I'm using a microsoft usb camera that works with motion eyes, I have the script set for usb camera. I read where someone else had this problem but was unable to follow what they did to correct, cuz I'm a noob with linux, would you please walk me through what I need to do to get video?
I'm not going to use the stand alone pi if I can get the Duet pi working but ask because I figure if its not working on the stand alone pi then it won't work on the Duet pi.
Tia

arhi

@luckyflyer this worked for me

apt-get install ffmpeg fswebcam wget
apt-get install libatlas-base-dev
apt-get install python3-numpy python-numpy

Danal

@luckyflyer said in DuetLapse available for Alpha testing:

@Danal I've got the numpy required error on my Duet pi, you said in a previous post that "I've updated the script to show the required commands, if numpy is not found." I'm on your Duetlapse github wiki, usage section. I don't see any commands for if numpy not found. Where do I find them?

Also I've loaded everything onto a standalone pi and everything works except there is no video. I'm using a microsoft usb camera that works with motion eyes, I have the script set for usb camera. I read where someone else had this problem but was unable to follow what they did to correct, cuz I'm a noob with linux, would you please walk me through what I need to do to get video?
I'm not going to use the stand alone pi if I can get the Duet pi working but ask because I figure if its not working on the stand alone pi then it won't work on the Duet pi.
Tia

ahri's commands should work.

I was referring to having the script tell you that, instead of half a page of stack trace and a "numpy not found". I'll check and see if I did that or not...

zapta

@arhi,

#define x(y)    y
#define x (y)   y

One is a macro with an argument and the other is a macro with zero arguments. It's a trick question.

luckyflyer

I was referring to having the script tell you that, instead of half a page of stack trace and a "numpy not found". I'll check and see if I did that or not...

Sorry for taking so long, duty called.
So what I'm getting now is this on all 3 of arhi's commands.
I cd to DuetLapse and tried again but got the same error.

E: Could not open lock file /var/lib/dpkg/lock-frontend - open (13: Permission denied)
E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), are you root?

luckyflyer

I think I fixed it by putting sudo in front of all 3 commands, testing now.

luckyflyer

I ran a small 30 layer print, played the file with vlc player and its just a blank screen. Of the three files only "sudo apt-get install libatlas-base-dev" was not present on the pi but I still get a blank screen. Are any of the 4 usb ports ok to use or just a specific one?

Danal

Any port. If you haven't run DuetLapse again, and have not rebooted, all the stills are in the /tmp directory. You can look at them individually, and/or re-assemble them into a video.

luckyflyer

All of the stills are in the temp directory and look good on my standalone pi. How does one reassemble the stills into a video?

Also on my Duet pi I'm still getting this,

Python Library Module 'numpy' is required.
Obtain via 'sudo python3 -m pip install numpy'
Obtain pip via 'sudo apt install python-pip'

When I run #2 I get,

/usr/bin/python3: No module named pip

When I run #3 I get

python-pip is already the newest version (18.1-5+rpt1).

Seems like I'm very close to it working but not there yet.

arhi

@luckyflyer said in DuetLapse available for Alpha testing:

. How does one reassemble the stills into a video

use ffmpeg

ffmpeg -r 12 -i /tmp/DuetLapse/IMG%08d.jpeg -vcodec libx264 -y -v 8 finalvideo.mp4

luckyflyer

Thanks, just enter as you posted on the command line?

luckyflyer

I c&p "ffmpeg -r 12 -i /tmp/DuetLapse/IMG%08d.jpeg -vcodec libx264 -y -v 8 finalvideo.mp4"
into terminal, Now I have finalvideo.mp4 in /home/pi. But it's still the same, when I play it on the pi with vlc the video is blank.
Is it possible to export the video to windows and try it there?

arhi

@luckyflyer did you look at the images in /tmp/DuetLapse ? you can copy those to windows and check if the images are ok

luckyflyer

I looked at them on the pi and they look good.

luckyflyer

I started over from scratch with the latest Duet image, burnt it to a sd card, did all of the updates, reinstalled all of my .g files and macros. I then reinstalled Duet lapse only this time I installed all of the corequisite items first and then all of the other files. It had an error at first, rebooted and now it seems to be working as it should. The jpg's are in temp, when the print is finished I'll try vlc for a movie. Wheew!

luckyflyer

Downloaded vlc to Duet pi but when I playback the video is blank, the vlc hazard cone stays on the screen. Is there a setting in ffmpeg that needs to be changed?
Is there a better/simpler way to transfer files from pi to pc than samba?

arhi

samba is simplest way IMHO

winscp works great too, especially if you want to access temp directory directly

those ffmpeg parameters normally work, did you check if the images are ok? If the images are not ok then ffmpeg can't create the video. Copy the images to the PC and check them out if they are ok.