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.

@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

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.

@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

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.

@jbergene

According to this picture

• positive X goes to the right
• positive Y goes to the back
• positive Z goes up

@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?

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

@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)

One thing not mentioned by anyone is the G31 probe offset. Are you sure it's OK?

@dwuk One thing I noticed in an earlier picture was some scratching belts:

I thought it was just temporary, but it still seems a problem.

@droftarts said in MMU - Single nozzle, multi material (filament):

it still outputs tool commands (T0, T1, T2 etc) in Gcode, even if you select 'Single Extruder Multi Material'. Not sure, but this might be a PrusaSlicer bug.

I guess the toolchange commands are required for different filament temps, diameter etc...
One can leave the macros empty, if not needed.

@dwuk said in Sovol SV08 Multiple Motion System Upgrade.:

will use sensorless just for testing purposes

Mirror or copy mode should work OK, but optical sensors are the best.

@dwuk Sensorless homing will do for now, but with more and more toolheads involved you'll need perfect homing positions relative to each other.
Otherwise it'll look like that:

@dc42 I lately printed funnel-like adapters for my woodworking machines. Many machines needed wood chip/dust extraction of a different diameter.

@dwuk said in Sovol SV08 Multiple Motion System Upgrade.:

interesting to see whether parallel printing is practical.

I'm sure there is a niche for it, same as for tool changers or MMU-printers. Each system has some drawbacks, here:
Building/commissioning/homing and maintaining perfect z-height will be a nightmare.

My understanding of the dual gcode stream is: you can open two gcode files at the same time and have a daemon.g running in the background?
At the same time you'd have to split the config.g into two portions.
Maybe put the U-axis specific lines in the startcode of the second stream?

@dwuk Having a bowden extruder in the mix makes sense if you want to print infill_every_nth_layer with a bigger nozzle.

@titusou Your extruders are quite short, which was perfect for your first design.
Now, with the XY-frame on top, I'm afraid the nozzles won't reach the bed?

@dwuk Equal belt tension is a critical part for a CoreXY. I hope you are still able to adjust all belts individually.