this post was submitted on 02 Sep 2023
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I have a Voxelab Aguila that I am about to install Klipper on. I also have a SKR E3 Turbo board left over from another printer.

Would it be worth installing the SKR board? Or will it not make any difference since the Pi is doing all the processing anyways?

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[–] fhein 4 points 1 year ago

I would guess it ultimately depends on how much you're interested in modding, fine-tuning settings and calibrating the printer to perfection. If you only want to load a model and hit "print" then I guess you wouldn't notice much difference from just a mainboard swap. But since you're about to install Klipper, you probably have some interest in spending time optimising your printer :)

I've upgraded a lot of things on my printer, but not got to the mainboard yet so it still has TMC2208 driver hardwired in stealthchop mode. I never got much out of pressure advance while the printer was still in bowden mode, even with a BMG extruder which is much stronger than the stock extruder.. Can't say if it would've turned out better with TMC2209 drivers, but after modding the printer to direct drive I have no issue with pressure advance. Now the main reason I want to upgrade mainboard some day is that I would like a 5:th driver so I can do proper dual Z.

And a general Klipper recommendation, in case this is the first time you try it out; Resonance compensation is like magic, and it works perfectly fine calibrating it manually (i.e. without buying an ADXL). After calibration, I could increase acceleration to 4000 without visible ringing. For reference the default acceleration for Ender-sized bed slingers is usually 500, which IIRC can be upped to about 700-900 before you start to get ringing.. Not only does high acceleration make it print faster, but at least for me it had a bigger impact on corner quality than pressure advance ever had.