Hi guys,
I'm playing with my new extruder and would like to know how much it extrudes in a real print.
Is it possible to display extrusion volume in DWC? Printspeed, layerheight and layerwidth? should be available for calculations.
I extruded in free air to get ballpark numbers, but real life is different.
![](/assets/uploads/system/avatar-default.png?v=1521803371351)
Best posts made by o_lampe
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Displaying current extrusion volume possible?
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RE: Music skipping beats after firmware update (3.4.0beta6)
@gtaman
It's actually the same:- create a global variable blockDaemon
- set global.blockDaemon = true at the start of the M300 file
- set global.blockDaemon = false at the end
Then anyone using Daemon.g for real can add these lines
while global.blockDaemon = true G4 S1000
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RE: Hollow shaft extruder
Had my first simpleFOC project running today. It was an old brushless gimbal controller without encoders and with 8bit mcu.
I was able to control two motors independently and relatively smooth (USB power only)
The atmega328 was also at it's limit, but I'm now confident it will work well with the right mcu. -
RE: External stepper drivers (TB6600) on duet 2 wifi
@m0ck1nj
Check the TB6600 datasheet. If it is OK with 3.3V signals on step, dir, enable you can wire it directly.
If it needs differential signals or 5V you can use the much cheaper expansion breakout board -
RE: Hollow shaft extruder
First print today
Instead of a benchy, I tried the extruder-woodgrain test. Yes there is some, but hardly visible. The corners were sharp and even, that was a relieve. The close loop PID setting are quite soft, so I expected worse...
At the top third, the printspeed got so low, that the filament overheated. 10°C less temp and it was nice and shiny again.
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RE: Accelerometer Usage
According to this picture
- positive X goes to the right
- positive Y goes to the back
- positive Z goes up
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RE: Smart Effector including toolboard-capabilities?
@dc42 said in Smart Effector including toolboard-capabilities?:
It's clear to me that the Orbiter could not be used with a Smart Effector made to the current dimensions. We would need to increase the rod spacing to at least 80mm in order to accommodate the various parts of the extruder. We are looking into this, however it would make it unsuitable for the smaller delta printers.
Hi dc42,
I just stumbled across this thread and wanted to guide you back to 2016 , when we discussed the cycloidal direct drive. (I still have it laying around)
I've made an 45 degree adapter for it, that suited the smart effector pretty well.Another way to mount it, was the split motor/gearbox idea.
I could try to reuse my motor and design a BMG-drive for the Smart effector?
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Display current back EMF for tuning
Hi devs,
based on the "extrusion volume" thread, I also think a back EMF calculator as DWC plugin would be helpful for tuning.
The required parameters are almost completely known for the calculation. It only misses coil resistance and inductivity (AFAIK)Since my Duet boards run on their own network, I don't have access to the EMF calculator at reprapfirmware.org
If we could integrate it as plugin and use 'live' values from the current object model/gcode file, we'd have a nice tuning tool
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RE: Add 'pre-retract' and 'post-retract'
@nikscha I like the idea. It's like the tool-change macros.
But there is also a problem when you retract / unretract within a toolchange.
Maybe you can solve your problem by renaming G10/G11 to G10.1 and G11.1 via postprocessing. Then you need only one macro for retraction (which also contains the real G10 move) -
RE: HELP! New Cast Alum. Bed doesn't seem to AutoMeshLevel
One thing not mentioned by anyone is the G31 probe offset. Are you sure it's OK?
Latest posts made by o_lampe
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RE: RepRapFirmware 3.6.0-alpha.2 for Duet main boards available
@Exerqtor Which IS algo did you use and does it look better with rrf 3.5.x?
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RE: RepRapFirmware 3.6.0-alpha.2 for Duet main boards available
@Notepad https://forum.duet3d.com/assets/uploads/files/1721499165580-p1086721.jpg
In this picture you can see the uppermost layers show a bit of meltdown on the Ei2 Y-part.
I blame it on very short layer time and the filament got too hot?
Wouldn't printing at too high temp also explain the smoothing? -
RE: Input shaper vs. max. volumetric printing
@dc42 I don't use an accelerometer to tune IS, but the caliper method.
I've now switched from ZVD to EI3 and do some test prints.
IMHO belt teeth cogging would have a much higher resonance, more like VFR-artifacts? -
RE: Input shaper vs. max. volumetric printing
@jay_s_uk For the time being, it would probably be good enough to have two IS calibrations and manually switch between them.
IIRC I can't use all the possible IS algos with Duet2?Using EI3 would probably cover enough frequencies for eg.100mm/s and 150mm/s printspeed?@all Does anyone use PS max. volumetric speed feature?
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RE: Input shaper vs. max. volumetric printing
@jay_s_uk I'm still on 3.4.6 on a Duet2 board.
IIRC there are limits regarding this board and IS.
Haven't read the release notes of rrf3.6 yet, but I don't expect miracles.
As I understood the new IS algo supports shorter tracks, but is still calibrated for a fixed printspeed, no? -
Input shaper vs. max. volumetric printing
Hi gents,
tldr; It would be nice to have an IS algorithm which can handle speed variationI often print parts with variable layer height for overhanging parts. Since the bottleneck of my printer is the DD-extruder, I can print much faster when the layerheight is small.
I haven't used PrusaSlicers max. volumetric speed feature, but I tend to increase the speedfactor in DWC manually when layerheight is low.
This unfortunately messes up my IS-calibration and I see ringing. -
RE: Robotic kinematics
@Mummed You can define fans, heater and a tool same as any other 3D printer. But to make it work with a 6DOF arm, you'd need a matching slicer.
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RE: peltier cooler with duet3 6hc
@adhanabal
Check out the I-parameter in M307 command
It will allow you to use peltier elements for cooling.
But I'm not sure, if autotuning will also work in inverted mode? M303 -
RE: Alarms to mobile by WhatsApp
@David-Piska I always try to keep my printers and other consumer electronics away from public network. (Pentagon or Peking don't need to know, when my filament is empty)
I'd only use such a feature when my smartphone is connected to my local WLAN. But then I can use the browser on my phone, right? -
RE: Duet Main board integration with TIG WELDER
@SANJR said in Duet Main board integration with TIG WELDER:
So for a quick check when the X and Z axis limit switch sensors are removed. No such error was seen
If you happen to have optical endstops, they might have been disturbed by the arc?