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:
Then anyone using Daemon.g for real can add these lines
while global.blockDaemon = true
G4 S1000
According to this picture
I found a simple way to deal with the BMG gear issue, would be interesting to print the extruder test.
I added a screw to adjust the gear-mesh no matter how the tension spring is set.
Do you have a link?
First I thought, I had to become patron, but he offers the test file for free on his HP
@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
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.
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.
@tombrazier I guess your Dremel will be pretty busy for a while. Here's the first print of the double roller VDE-100
Some artifacts I've noticed when I converted to .obj. They actually show in the print..
@Anon1337 One could look for a dual-heater hotend and use two 24V cartridges in series.
@CNCModeller I'm no software expert. From afar everything looks easy.
Question is: does it all fit together?
PID control loops for the encoder are probably differerent or some registers for PWM are occupied by RRF stuff.
Merging two big chunks of software is difficult.
They say it works best on STM32 boards (*). They produce the fastest control loop, but SAMD21 is another good candidate.
Time to figure out what's different between the SAM-C21 and the D21...
*) maybe we can interest @gloomyandy and his team to make a Mellow-version?
@Aurimas There once was a difference between G0 and G1 moves, but RRF treats both the same now.
But even if they were still different, it's the opposite effect of what you are looking for:
AFAIK, with multi-gcode stream you could run two streams independently but not 8.
I could imagine a setup with several independent duet mainboards, synchronizing their motions by external triggers.
But that would be experimental at best.
Maybe I reference my hashPrinter here, just in case someone wants to have 4 printheads and needs inspiration...
@Zseven AD conversion uses lots of interrupts and can disturb the printers main tasks.
I recommend using a separate AD-converter (e.g. ESP32) and communicate via digital trigger input with the Duet.
@FreddyB428
Hi, you could check the stepper plugs from drive 1+3 if they are different from the others.
Red, blue, green, black is a common wiring order, unless you have 6-wire NEMA23 steppers. Those can be wired in various ways.
When you unplug the steppers, hotend, fans, etc. and still get the shortcut error, the board is faulty.
I've checked some papers and the conductivity of SLM printed aluminum-alloy is in the ballpark of conventional aluminum alloy material
Pure aluminium: 237 W/mK
SLM printed AlSi10Mg: 130-190 W/mK
Other Aluminium alloys vary from ~90-150 W/mK
So, if it's not the SLM-heatsink it must be poor design choices regarding airflow?
@Surgikill said in Duet3D announces new tool board at FormNext:
max ambient printing temp is 40C
Can you quote this or add a link for us?
I wonder if that's related to the 3d printed heatsink? Maybe it's thermal conductivity is too low.
Funny enough they dont conduct heat from the stepper, but added a thermal barrier between.
@tecno Does OpenPnP know this machine? How it homes and picks up and aligns the parts? How does the reel feed work a.s.o.
From the picture the toolhead has two suction cups. (for bigger chips I guess)
What I don't see is, does the toolhead have a rotating pickup? If not, you have to figure out how to rotate parts. Camera inspection would be the cherry on the cake, but I would try without in the beginning.
Good luck
PS: I have worked on a semi-automatic PnP table. It was much slower than a real PnP, but for prototypes and small batches it was OK.
@droftarts I mentioned laser mode because Inkscape has some useful plugins for path finding and gcode generation. I can define which gcode is used for On/Off control.
I'm not sure if my plasma cutter can handle PWM on it's control input. In the end I'd be happy to cut out shapes without controller crashes.
I found EMI filters for mains voltage, then use shielded cable and probably snap-on ferrit cores.
My hopes are that my plasma cutters "B" classification (allowed to be used in residential areas) means it has lower EMI emission.
@droftarts Actually I want to use a pilot-arc torch, so I might get away with constant height. The replacement parts are also cheap.
All I ask from Duet is to start the arc with a certain dwell time for the initial cut and then cut with steady speed.
The on/off commands and the slicing SW will be the same as for laser cutting I guess. E. g. Inkscape has some good features to add offsets around shapes.
The compressor is independent and controlled by the plasma inverter.
@tom33 Are you sure, the encoder has 1000 cpt? Maybe it's a 1024 cpt version?
How much smaller are you talking about?
