DuetLapse available for Alpha testing

Danal

Despite having written this, I don't actually do timelapse all that often. As a result, I've tested DuetLapse in pieces, but I have never actually run it, with a camera, on a print. Therefore, just for fun, when running a test print yesterday, I set up a web cam and executed:

./DuetLapse.py -camera web -weburl http://192.168.7.96/cgi-bin/currentpic.cgi -duet localhost

The print ended up running for 17 hours 40 minutes. DuetLapse captured 1046 images, and produced a video that runs for 1:43.

Amusingly enough, the camera was double-stick-taped to a tripod, and it fell off about four hours before the print end. It is sort of comical that the printer is moving around in this image where the background is rock solid... and then you see the background start to 'ooze' (really, the camera just beginning to fall off the tape). It takes several seconds in lapse time, so probably 30 min or more of real time from the first detectable move to the fall. Then, bam, between one frame and the next, a nice view of the corner of the room from floor level.

It is just really funny to watch it ooze, accelerating as it bends its way off the tape, and knowing that motion would have been imperceptible in the real world, until the final fall.

Anyway, that was literally my first run of DuetLapse.

(Cool Story Bro)

Phaedrux

@Danal ....Can I see the video?

Danal

Sure,

http://danalspub.com/wp-content/uploads/2020/04/DuetLapse0427201124.mp4

Also, note it is at a horrible angle to show a print... the head blocks it. Camera power cord was very short, and I didn't really care about the content of the vid, just did the script work or not.

Phaedrux

That's great. Can't wait to start using it.

Adrian52

Great program, but I still have not got it quite right. I am currently using. /DuetLapse - duet 192.168.1.16 -camera pi -detect pause, with M25 and M400 added to each layer in gcode (easy to do in kisslicer). The problem is that two frames are taken, one when the head is moved away by pause.g, the second a bit later, when the print has resumed. I also get an error message on the console 'm24: cannot print because no file is selected'. It looks as though the m24 is being sent twice.
I have edited my pause.g so that there is no z shift.

Danal

I will take a look. Could you post a section of gcode that includes a pause, and the content of your pause.g and resume.g files, please?

Adrian52

@Danal Thanks. This is the gcode transition from layer 1 to 2:

 G1 X7.344 Y7.508 E0.06547
G1 X6.523 Y8.329 E0.05469
G1 X6.526 Y8.329 E0.00013
G1 X7.303 Y8.327 E0.0366
G1 X7.938 Y7.692 E0.04229
G1 X8.319 Y7.312 E0.02538
G1 X8.446 Y7.185 E0.00845
; trigger retract
G10
; Blending Fan to Cool (21.9% blend)
; Blended Fan at 11%
;
; 'Destring/Wipe/Jump Path', 0.0 [feed mm/s], 20.0 [head mm/s]
; head speed 20.000000, filament speed 0.000000, preload 0.000000
; Prepare for End-Of-Layer
; time estimate: pre = 66.853355, post = 66.451721
; Dwell time remaining = -46.451717
;
; Post-layer lift
G1 X8.446 Y7.185 Z0.4 E0 F3000
; END_LAYER_OBJECT z=0.200
;
; *** Every 1 Layers ***
M25
M400
;
; *** Estimate all extruders at 15.9 [s], Slowing 0.776x to 20.0 [s] ***
; BEGIN_LAYER_OBJECT z=0.400 z_thickness=0.200
; Fan set to Cool value 50%
;
; 'Loop Path', 1.8 [feed mm/s], 38.8 [head mm/s]
G1 X9.155 Y-7.346 Z0.4 E0 F7800
; trigger prime
G11
; head speed 38.793945, filament speed 1.827376, preload 0.000000
G1 X9.155 Y-7.153 E0.00908 F2327.6
G1 X9.155 Y-6.575 E0.02723
G1 X9.155 Y-5.612 E0.04538
G1 X9.155 Y-4.263 E0.06354
G1 X9.155 Y-2.529 E0.08169
G1 X9.155 Y-0.409 E0.09985
G1 X9.155 Y4.986 E0.25415
G1 X9.155 Y9.155 E0.19635
G1 X-4.417 Y9.155 E0.63929
G1 X-9.155 Y9.155 E0.22317
; Prepare for Perimeter
G1 X-9.155 Y-9.155 E0.86246

Pause.g

M83					; relative extruder moves
G1 E-3 F2000		; retract 3mm
;G91					; relative moves
;G1 Z20 F5000			; raise nozzle 20mm
G90					; absolute moves
G1 X-100 Y20 F10000		; move head out of the way of the print

Resume.g

;G1 R1 Z2 F5000     ; move to 2mm above resume point
G1 R1 F10000	; lower nozzle to resume point
M83         ; relative extruder moves
G1 E3 F1500     ; undo the retraction

As you see I have commented out my z moves

Danal

Thanks!

Also.. If you pulled the script from github after Sat Apr 25 21:27:50 CDT, it no longer looks at Z. It looks at layers. Which works MUCH better.

Danal

Aha!

M25 is not for pausing from within a file being printed. Please change these to M226.

Adrian52

@Danal thanks very much - will give it a go.

Adrian52

Still getting the same behaviour with M226 in the gcode, with or without z move, using freshly pulled scripts.

Danal

Thanks for checking that, I will give this a look.

Adrian52

If you are using the raspberry pi camera, note that it has a default 5 second timeout. If you include -t 1 in the camera parameters, it works much more quickly. I have also started including -ex sports, which uses a fast shutter speed, and -mm matrix, which seems to give a better exposure; -n gives nopreview.
With the faster response, I now sometimes get more than one extra picture per layer - I got 547 for a 0.2 layer benchy, instead of 240.

Danal

@Adrian52 said in DuetLapse available for Alpha testing:

If you are using the raspberry pi camera, note that it has a default 5 second timeout. If you include -t 1 in the camera parameters, it works much more quickly. I have also started including -ex sports, which uses a fast shutter speed, and -mm matrix, which seems to give a better exposure; -n gives nopreview.
With the faster response, I now sometimes get more than one extra picture per layer - I got 547 for a 0.2 layer benchy, instead of 240.

@Adrian52 said in DuetLapse available for Alpha testing:

If you are using the raspberry pi camera, note that it has a default 5 second timeout. If you include -t 1 in the camera parameters, it works much more quickly. I have also started including -ex sports, which uses a fast shutter speed, and -mm matrix, which seems to give a better exposure; -n gives nopreview.
With the faster response, I now sometimes get more than one extra picture per layer - I got 547 for a 0.2 layer benchy, instead of 240.

I will add those to the defaults

Adrian52

https://vimeo.com/415279225
Is an effort with pla. Used detect - pause, with M226 in the gcode at each layer change. The extra frames have to be deleted before running ffmpeg again

arhi

some, not so recent, rpi installation ...

root@octopi:~/DuetLapse# ./DuetLapse.py -h
Traceback (most recent call last):
  File "./DuetLapse.py", line 21, in <module>
    import DuetWebAPI as DWA
  File "/root/DuetLapse/DuetWebAPI.py", line 27
    URL=(f'{self._base_url}'+'/rr_status?type=1')
                           ^
SyntaxError: invalid syntax
root@octopi:~/DuetLapse# python3
python3     python3.5   python3.5m  python3m
root@octopi:~/DuetLapse# python3 DuetLapse.py -h
Traceback (most recent call last):
  File "DuetLapse.py", line 21, in <module>
    import DuetWebAPI as DWA
  File "/root/DuetLapse/DuetWebAPI.py", line 27
    URL=(f'{self._base_url}'+'/rr_status?type=1')
                           ^
SyntaxError: invalid syntax
root@octopi:~/DuetLapse#

after rpi-update

root@octopi:~/DuetLapse# python3 --version
Python 3.5.3
root@octopi:~/DuetLapse# python3 ./DuetLapse.py -h
Traceback (most recent call last):
  File "./DuetLapse.py", line 21, in <module>
    import DuetWebAPI as DWA
  File "/root/DuetLapse/DuetWebAPI.py", line 27
    URL=(f'{self._base_url}'+'/rr_status?type=1')
                           ^
SyntaxError: invalid syntax
root@octopi:~/DuetLapse# python3 ./DuetLapse.py
Traceback (most recent call last):
  File "./DuetLapse.py", line 21, in <module>
    import DuetWebAPI as DWA
  File "/root/DuetLapse/DuetWebAPI.py", line 27
    URL=(f'{self._base_url}'+'/rr_status?type=1')
                           ^
SyntaxError: invalid syntax
root@octopi:~/DuetLapse#

arhi

hm and just in case wget messed something up .. git clone of both repos

root@octopi:~/DuetLapse/DuetLapse# PYTHONPATH=/root/DuetLapse/DuetWebAPI python3 DuetLapse.py  -h
Traceback (most recent call last):
  File "DuetLapse.py", line 21, in <module>
    import DuetWebAPI as DWA
  File "/root/DuetLapse/DuetWebAPI/DuetWebAPI.py", line 27
    URL=(f'{self._base_url}'+'/rr_status?type=1')
                           ^
SyntaxError: invalid syntax
root@octopi:~/DuetLapse/DuetLapse#

I don't get it, I don't see that this line changed since forever?!

looks like F-Strings are in from 3.6 only raspbian on pi3b+ latest comes with 3.5.3

Danal

@arhi said in DuetLapse available for Alpha testing:

URL=(f'{self._base_url}'+'/rr_status?type=1')

@arhi Very interesting, I don't get that, and that line is not a syntax error. Hmmm... Let me think of a way to pin this down.

arhi

@Danal said in DuetLapse available for Alpha testing:

@arhi said in DuetLapse available for Alpha testing:

URL=(f'{self._base_url}'+'/rr_status?type=1')

@arhi Very interesting, I don't get that, and that line is not a syntax error. Hmmm... Let me think of a way to pin this down.

F-strings are 3.6 python from what I read online, and stretch has max python 3.5.3 ... I'm now going to move to buster and see if it uses newer python

Danal

@arhi said in DuetLapse available for Alpha testing:

@Danal said in DuetLapse available for Alpha testing:

@arhi said in DuetLapse available for Alpha testing:

URL=(f'{self._base_url}'+'/rr_status?type=1')

@arhi Very interesting, I don't get that, and that line is not a syntax error. Hmmm... Let me think of a way to pin this down.

F-strings are 3.6 python from what I read online, and stretch has max python 3.5.3 ... I'm now going to move to buster and see if it uses newer python

Excellent detective work. I had no idea f was that recent.