Testing Klipper on Delta with 6 stepper motors and no idlers. 300mm/s 20000 acceleration
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- Опубликовано: 6 сен 2024
- Using modified Klipper, TMC2209, e3d high torque steppers running at 1.4A. Looks to work fantastically apart from the filament melting to slowly. Just tried with the V6 it had on and a eSUN PLA+.
!Update! Now integrated into main Klipper.
Config files for this printer are found here:
github.com/Typ...
Its so loud lol! I can see this being a very useful tool during an argument with the wife haha
I was just thinking about having two motors per axis. I'm glad I found your video. With the limitation of the arm stiffness, is it possible to push a delta to the limit with just a single motor per axis? I'm very interested in this and would love to know the status if support in slippery, and your models if possible!
Very cool! I've been wondering about trying this with a second set of bottom vertexes, someday, but I like your implementation with the motor shafts supported by end bearings.
Thank you. I got the idea from the HEVORT project.
Hey! amazing project! Are there models for mounting motors and walls in the stl in the public domain? :)
Hi, thank you. Haven’t put up the motor mounts because it’s not implemented in Klipper yet and the mounts for sidepanels aren’t a perfect fit and also limits the printarea. Will maybe put them up later if there is intrest.
How do you think o drive with drone motors would work?
This looks very promising!
Arata chiar bine! Felicitari si bafta in continuare!
Cool machine !
I have the same printer, and after numerous upgrades the rods and traxxas bearings seemed to be main cause of flex and vibration. How did u deal with this?
@@idranoutof1d Thank you for the input. I did try to change the rods but still flexed a lot so I put the project on ice :)
Awesome!
Hi,
Going to build a new delta 3d, bigger than the previous one, could you please share your experience:
1. have you tried to drive both motors on the same axe via the single driver?
2. I see you use 2020 for the frame, is it rigid enough?
What are the best filament and temperatures you've used? I have been able to melt enough esun abs+ around 310c for a 5 minute benchy. Unfortunately I have maxed out my hotend development. I'm currently running a dragon high flow with a custom volcano heat block and a volcano CHT nozzle :(
I've been happy with PrimaSELECT PLA PRO. Tried a eSUN ABS+ Natural print and got it to 9.3-9.4min benchy on my CoreXY but it looked worse so didn't post that. CHT is great but I haven't seen a nozzle for Volcano, other than the modified one from CNC Kitchen. I haven't managed to print anything nice at this speeds. I've read that nano Diamond PLA is the best but have no experience.
Nitram is doing some great work with custom hotends.
I was talking about this earlier this month and was in the plans for my silly experiments lol. Subscribed because I want to see how you get on! :) Is there any update on this???
No real update, it works just as any onther but with more torque. I have double the motors and stepppers on my CoreXY too that I use primarily.
I have always heard that having multiple stepper motors with different drivers on the same belt doesn’t work because they can’t sync up right. For this one do you have two motors run off of one driver, or is that just a myth? Really cool build regardless
Thank you. It depends on firmware. Klipper seems to work with my mods and I have run multiple steppers per belt on my large CoreXY with RRF for over a year. Have a video of a sub 10 min benchy on it.
There were issues when I had the steppers on different boards but not anymore.
This Delta is still a proof of concept because the arms are not stiff enough for high speeds.
Turbo cool
Nice job. Trying to get klipper to run on my Anycubic Predator aswell but printer.cfg giving me some issues due to SKR1.4 Turbo pins so its sitting on the side for now. By the way how did you setup the steppers to work together on each axis?
Will keep an eye out for updates.
I’ve modified Klipper to add this functionality. Here is the proposed code and examples that run on your board ;)
github.com/Klipper3d/klipper/pull/4884
@@andreiignat3877 appreciate it. Will have a look at it later tonight. Once i finally get the printer.cfg right for "stock" predator i'll start working on that dual stepper setup. A btt octupus or similar should work aswell avoiding the need for 2 skr 1.4t right?
Hi, could you share the step file? thanks
What screws do you use to make the printer stiff? Will you be presenting some movie about this printer, print quality? Where can I find additional information about your modifications?
Which screws do you mean?
I have to upgrade my rods because of play so quality is really bad at high speed right now.
@@andreiignat3877 I mean the screws that twist the chipboard.
@@daro007 The side walls are just regular 16mm shelfs I cut down. The screws are regular M5 with T-nuts in frame.
Will have to recut if I intend to use this printer as I loose XY because of the walls.
Very cool Mod!
So one month later how is it working out till now?
I would like to know, which effector is that?
Yeah….. Haven’t really used it. I was waiting for BTT to ship the Octopus Pro since October.
I have concentrated on my other printers for now.
Hmmm so it's 2 motors controlling one "axis"?
Yes. And each motor has it’s own stepper.
Why do you use 2 steppers for each axis?
Shorter belt path as the belt is pulled at both ends gives less flex in belt and more torque when using 2 steppers.
but how do you configure them on printer.cfg , like stepper_a1 , stepper_a2 ? looks nice men !
I configure them as stepper_a, stapper_a1, stepper_b, etc.
my config backup is at:
github.com/TypQxQ/DuetBackup/tree/main/Kossel/klipper_config
@@andreiignat3877 thanks men ! , i tested series and paralel wiring on delta and the back emf realy bugs the stepper drivers , im getting an octopus to sepparate 1 stepper motor to 1 stepper driver
@@andreiignat3877 what are those pulleys ?
@@Airborntx Gates 6mm I got from e3d.
I don't understand, how does this delta printer have 6 motors?
Actually 7 if counting the extruder. Instead of idler on top of each beltpath I put a motor controlled by a different stepper driver but synchronised in firmware to the one on the bottom.
@@andreiignat3877 what is the advantage of having dual motors per axis instead of an idler and motor?
@@dynamite212000 Double the torque and half the belt length giving stiffer beltpath.
Is that 3 or 6 2209 drivers?
7 with the Extruder 😄
48v when?
I recieved v1.1 of the BTT5160 Pro and it’s rated up to 56v. Just my luck. I have a PSU that has 58.2v as lowesst setting.
Also I realised I have some play in the ball links / rods so project is paused.
@@andreiignat3877 well other than the play, have you considered a buck converter
@@matthewweinberger7023 I unfortunately haven’t found one in that voltage range.
@@andreiignat3877 There's a couple of good ways to reduce the play in the links. You can preload each pair against each other, with a spring or rubber band. Otherwise you can use a tensioner spring in between, and parallel to each rod pair. I recall another low mass setup that used two tension cables in place of the rods with a single telescoping spring setup to keep them taut.
@@markfuller5076 Thanx. I’ve changed them to carbon rods since this video.