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Hallo zusammen,
ich bin auf der Suche nach Befestigungsschrauben für die Handelsüblichen Bowdenzüge. Beispiel GRRF.de, da gibts nen 3,2mm Innendurchmesser mit 4,75mm Außendurchmesser. Bei Thingivers habe ich bei mehreren Designs für Bowdenzugextruder die gleichen Fixierungsschrauben gefunden.
Welche sind das? Womit macht ihr das? Wo bekommt man die?
Viele Grüße
Timo
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Timo Birnschein
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Extruder, Hotends & verschiedene Materialien
Moin!
Ja, die Driftreifen sind auch von mir. Allerdings muss man sagen, dass das weniger gut funktioniert. Das Plastik ist dafür nicht fest genug. Einmal Kantstein und man kann neu drucken. An sonsten geht das gut, aber die Printzeiten sind abartig...
Der Wagen ist seit eben auf Thingivers! http://www.thingiverse.com/thing:19196
Also Thumbs up und happy printing
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Timo Birnschein
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Mechanik
Moin Leute,
ich wollte euch gerne mal mein Rally Chassis MF-01RA vorstellen. Das ganze in Form von Videos. Ich habe drei Wochen nach der Arbeit SolidWorks gelernt und in dieser Zeit ein komplettes Chassis für den etwas leichteren Einsatz im Bereich Rally entwickelt. Nach nun drei Wochen habe ich das ganze Ding in meinem Eigenbau RepRap 3D-Drucker gedruckt, gebaut und getestet.
Ich bin gespannt
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Timo Birnschein
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Mechanik
Hi all,
I'm trying to get the Marlin Firmware to run on my hardware board using unipolar stepper motors and I ran into a minor problem:
It seems I cannot change the F_CPU definition from 16000000L ti 18432000L because the Arduino IDE uses settings from... somewhere.
Is there any way to change F_CPU, because changing it within the Makefile supplied with Marlin does not change a thing.
Any hint
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Traumflug Wrote:
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> Plans are almost as old as Teacup it's self :-)
>
> If you want it, please do it. Everything is there,
> just provisions to start a move from non-zero
> speeds and a queue walker are needed. Instead of
> Marlin, I'd look into Grbl Firmware, the origins
> of Marlin's enhancements, instead, much nicer
&
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Hey all,
any plans on implementing the look-ahead planner from the Marlin firmware into TeaCup? Or did I miss it and its allready there but I don't have the current version?
In my mind it would be a hugh enhancement and I would love to see it in TeaCup - since Marlin is, again, the Arduino IDE stuff and no real ANSI C...
Thanks,
Timo
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Timo Birnschein
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Firmware - experimental, borrowed, and future
... biegt sich das Bauteil hoch? Mist...
Dann muss ich mit der Spannung hoch gehen. Sollte möglich sein.
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Timo Birnschein
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Altes Forum
Moin Leute,
ich arbeite mit meinem Drucker erst seit kurzem und ich finde einfach keine Auflagefläche auf der sich meine Printouts nicht irgendwann während des Drucks hochbiegen und damit die Genauigkeit versauen.
Ein paar Daten:
Prusa Mendel - stark modifiziert, weil ich keine der originalen Motoren verwende
Ich habe mir ein eigenes Heizbett gebaut indem ich mir Platinen berechnet und hier zuh
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Timo Birnschein
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Altes Forum
I believe it could be sufficient to turn off ramps at all during curves below a certain angle from vector to vector and just go slightly slower than usual (add a parameter / factor for that). Ramp up and ramp down only happens at the beginning and end of a curve (angle threshold). That should be doable because main parts of ACCELERATION_REPRAP should be usable without any modifications.
What do
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Without it the machine runs through all the structures at the present level. That introduces problems with my nozzle because it is realtively pointy - the cone has some angle like 90°, so its not that flat. When the machine runs through the material (which might also be cooled down already) I saw the part moving and vibrating and while moving around corners (not going in a streight line from a to
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Thanks Triffid!
Sublime Wrote:
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> The default acceleration value is WAY to low.
> Sprinters default is 1000mm/s^2
> I use Teacup and have it set to 750mm/s^2 on my
> Prusa and 1500mm/s^2 on my Repstrap w/Bowden
> cable.
>
> I suggest trying 1000mm/s^2. And with the printing
> speed of 60mm/s and a travel speed of
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Timo Birnschein
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Firmware - experimental, borrowed, and future
I have a configuration question / feature request:
I noticed that each vector starts and stops with a ramp. So when I print something like a belt pully I always print very short vectors and therefore at very slow speeds without any positive effect.
What I would expect is that the angle between the current and the next vector is checked every time a vector in beeing pulled from the queue and that
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Sublime Wrote:
-------------------------------------------------------
>
> I am amazed you managed to use those 7.5degree
> steppers.
>
Thanks
Yeah, thats why I need these gears everywhere. Makes it a little more complex and also heavier - especially the extruder is a little to heavy in my opinion. But it works! The motors are driven in half step mode, so 3.75 degree per step with
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Here are two videos of the part I just finished!
Work in progress: http://www.youtube.com/watch?v=FY6jGlyEA3g
Remember that is my thrid try to print something which I didn't abort after a minute. The printbed is my homebrew version of a print bed, so its rather small at the moment. I thought I might save a few bugs by building my own - a 2€ heater bed at 100°C
And here is the final product: ht
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Timo Birnschein
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Firmware - experimental, borrowed, and future
I'm so happy right now!
I tried ACCELERATION_REPRAP before anybody answerd and will upload a video in a view minutes of the print that is currently on the way.
I use pronterface and the acceleration is obviously not existent, but my printer is printing like crazy right now (at least in my optinion) and the quality is rather good after some Skeinforge and TeaCup config tweeking!
Awesome!
And th
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Hey Guys,
I'm about to finish my first real print, an Y-Motor-Bracket. It really looks quite good this time!
But I'm wondering: I know my RepRap can be way faster and I'd like to ask which method of movement are you guys using most of the time?
ACCELERATION_REPRAP ACCELERATION_RAMPING ACCELERATION_TEMPORAL
I allready noticed that I have to turn down the maximum speed of my axis and my extruder
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Traumflug Wrote:
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> I.e., run all counters as normal, but step outside
> the endstops only.
Wouldn't that result in a lock situation where the printer is not able to get away from the endstop ever again during a print?
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Timo Birnschein
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Firmware - experimental, borrowed, and future
It works, guys!
The printer is printing!
Today I produced a custom heater bed, but I don't have a proper top layer for it, so my plastic doesn't stick to it enough at the moment :/
But the first belt clamp I was able to print with the printer will be usable. Not the prettiest one, for sure, but for the first print, not a bad result, in my opinion
Thanks for all your help! I'll go on tomorrow
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Dave Durant Wrote:
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> > I read through most of the blog entries of Dave
> Durant
>
> Mistake!
lol
Thanks for this hint! I'll try 0.85 this evening!
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Yes, I did that. It pushes exactly 100mm into the nozzle when I tell it to do so. Thats why I'm still slightly confused...
I measured the 100mm at the ABS and marked it, extruded 100mm in proterface and measured again. It is spot on...
Then I measured the diameter of the filament at several positions of the wire (2.9mm) and put this information into Skeinforge. But still big blobs of ABS instead
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Yeah, my Teacup was set to absolute and Skeinforge was set to relative...
The extruder works much better and plausible now and all the axis are running fast as well. i guess when you have to draw a 2mm long line with 100ml of ink you would end up with my shown result
But I still don't get propper extruder results. It is still extruding about four tims as much (or even more) as it should be...
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Progress: The first and biggest problem was that the extruder feed rate was set to "Absolute" and not to "Relative"... makes sense in a lot of ways - after I checked the actual G-Code output.
Now the extruder feed rate...
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Hey guys,
I'm working on getting my printer to produce some first usable results and I'm slightly stuck because the sheer number of settings in skeinforge is sort of overwhelming.
To explain my problem I've made a little video about my machine.
All axis are calibrated and can move on command by the set amount of mm. So does the extruder now - thanks to Dale Dunn.
Also the temperature and the ext
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Timo Birnschein
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Firmware - experimental, borrowed, and future
Thanks for your help guys!
After turning the Dimensions in Skeinforge on it is actually extruding now!
But about 1000% to much - and my STEPS_PER_MM_E is already at 1.2, and its also extruding additional tons of material while printing the base layers - while non of the three axis are moving - I hope its just a setting in Skeinforge, because I don't see any reason why my modified Teacup should
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Timo Birnschein
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Firmware - experimental, borrowed, and future
rhmorrison Wrote:
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> If you are using Skeinforge to generate the gcode
> make sure you have Dimension turned on!
In case its not default its definately turned off. I didn't dive into Skeinforge yet, I'll check that property as soon as I get home tomorrow!
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Timo Birnschein
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Firmware - experimental, borrowed, and future