Titan aero steps pr mm
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What is actual problem you have with the extruder? Changing firmware shouldn't have any effect. If you have a 1.8 degree motor, the steps per mm at 16x on a titan should be around 400. For a 0.9 degree motor they will be double that so around 800. If you use 32X micro stepping those figures will all be double that again. If you set steps per mm first, this will default to 16x so if you change micro stepping after, then Duet will re-calculate for you.
What you have above is set micro stepping to 32x in you M305, then set the steps per mm using that 32x to 907 which is close for a 1.8 degree stepper but for a 0.9 degree stepper, it is only half of what you need.
BTW, don't try and print with what you have above because you've also changed the steps per mm for X and Y (probably Z as well). For a 20 tooth pulley and 1.8 degree stepper the steps per mm will be 80 at 16x micro stepping so setting the micro stepping to 32 then setting the steps per mm to 80 will only give you half the movement.
HTH -
actually the correct value for a Titan is 837 steps for a 0.9 degree motor on x16
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my problem is that it dosnt extrude enough filament . only about half.
It's a 9 degree stepper and i have had it running fine.measuring 100 mm filament and mark it and tell it to extrude 100 mm. it only extrudes 60 mm with this setup ?
M92 X80 Y80 Z400 E837 ; Set steps per mm
M350 E16 I1 ; Configure microstepping with interpolation
M350 X16 Y16 Z16 I1 ; Configure microstepping with interpolation
M566 X1200 Y1200 Z24 E300 ; Set maximum instantaneous speed changes (mm/min)
M203 X30000 Y30000 Z600 E3000 ; Set maximum speeds (mm/min)
M201 X500 Y500 Z100 E5000 ; Set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout -
That config looks fine to me. After calibrating, I run a tad over 400 steps per mm @ 16x on all 5 of my Titans with 1.8 degree motors, so 837 would be about right for 0,9 degree motors. If it was a firmware problem then lots of us would be experiencing issues so I'd say that it's purely coincidental that your problems started after the firmware upgrade. Suggest you look for a partial blockage or some restriction in the hot end that is causing the extruder to skip steps or grind the filament.
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Are you using the E3D pancake motor as extruder drive? In that case I would use more current for the extruder, I use 1200mA (24V) and get good results, with lower current I the extruder occasionally skipped steps…
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And it has worked fine for me too until i updated firmware ???? it makes no sense i know . But its a fact. I even tried re uploading the firmware with no change
So somewhere in my files there is a little gnome teasing me
Pancake? dunno . its the motor delivered with the titan ( e3d ) 26 mm thick . And i run on 12V on my system
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no config is fine, Check M122 to see if you have skipped steps after extrusion.
I would try to extrude without the heater block connected (in case of clogged nozzle). -
Facepalm
Thank you all for your input
And thank you whosrdaddy for the solution. i tried extruding without the heatbloc connectet.
And filament extrudes as it should. so after a cleanup it should work fine .Thanks again
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I
ve had a problem with my titan aero , Ive not been able to get to extrude more than about 80mm out of 100mm whatever setting I used .
I didn`t think about it being a stepper motor under current problem , so decided to give it a try and for the first time with a setting of 1400ma got it to over extrude.I think the 800ma default is a little too low for most steppers , but I guess they are working on safety first ?.
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No firmware update has affected my titan aero.
I would like to ask you how old is your extruder? I'm asking you this as there was an issue with the titan aero bearings. I had my aero working great until I moved it onto my new coreXY and and the extrusions were inconsistent. It took me a while before i eventually figured out that the bearings were causing this problem due to a friction increase as a result of not only missing steps but also the extruder was getting jammed.
With new bearings I can still use the pancake (slim nema motor that comes with aero) but I still had to increase the current to 1000 (M906 E1000 I50)
I am currently using x16 microstepping and works great
M350 E16 I1 ; Configure microstepping with interpolation
M92 E950 ; Set steps per mm -
how old ? , out of the box !!!
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So you had the titan aero assembled, which was working fine until you upgraded the firmware. This is strange indeed.
How fast do you extract? Usually for steps calibration I go as low as 160mm/min (2.6mm/s).Did you extruder came with bushings or bearings? While extruding do you notice any jam at all, like the extrusion slows down or something?
Since you changed the current to 1.4 and overextruded the only thing that can think of, is that there must be a high friction issue with the extruder. How did you tighten the heatsink? I had a friction issue which i managed to solve by tightening the screws from top right (the freewheel and bearings location but very gently) , right bottom, top left and left bottom. E3D last time i checked suggest the right process should be from top left, bottom left, and move on the right side which didn't work out well for me. Tried it with both bearings and bushings and there was always some tension and minor misalignment when i was following their suggested sequence.
Something else you need to consider is in case if you are using the pancake motor (slim nema motor) is that you are close to its max amp rating and you should be somewhere around 80% of this number (1.4).
