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iChalix

BLV mgn Cube - version with Klipper Firmware on RAMPS 1.4

by iChalix Apr 8, 2019
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Hello

You said that you just installed the Plugin "LED Status" in Octoprint.
I can only find the Plugin "RGB Status". Is this the Plugin you are using to control the LED Rings?
some screenshots of your configuration would be very nice.

Thanks

Hello,

yes it is "RGB Status". It was a typo in the text. I corrected it and uploaded a picture with the main settings.

Thats awful, great, thanks! I will try this out. :)

First, very nice job! I love the clean layout of your electronics and back plane. Your printer looks very tall - what print height did you pick? I would love to see a video of it printing.

I am interested in your lead-screw/nut choice. I have considered more expensive ball screws but like your solution better. The links you provided do not ship to United States. Any ideas on who else provides this precision lead screw?

Hi,

many thanks. The print height is 665mm. The overall height is 860mm. Therefore it looks such tall. Unfortunately I do not know where you can buy this kind of nut and lead screw outside of Germany. Regardless precision and tolerances I think the secret is the pitch of the screw. Normally you get a standard lead screw with a pitch of 8mm (1 round = 8mm height). The issue here is that tolerances have a huge impact to height coming from the motor rotation. Small rotation is a big change in height. Especially at the point when a change of direction accurs (f.e. after homing or coming from the auto leveling which creates a mesh of different heights ending in permanent small direction changes in Z during print of a layer). If you have a tolerance between screw and nut a small rotation will not result in a movement. With that in mind a pitch of 1.5mm (1 round = 1.5mm height) is more precise from the nature more rotation is needed for movement which "bridges" tolerances. In addition a smaller pitch gives more control to layer height. I have not tested but I expect a possible print resolution less that 0.06mm in Z.

In my opinion if you go for an 8x1.5 lead screw + nut, tolerances play not that much role.

Excellent work! you have done a great job there.
Klipper is a great fw and the electronics you used can save a lot of money :) nice!
The cables organized so well, i really liked it.
I hope it will become a good alternative, good luck and keep us updated please :)

Hi,

many thanks. This is all based on your rock solid and beautiful design. I saw the picture of the printer, the perfect documentation and I had no other choice as to go for a build. Thank you so much for sharing this project!