Config Settings for AWD voron 2.4 - coreXY

michaelr123

Planning an upgrade to my Voron 2.4 with a duet 2 board, quick question on the config for this setup.

Here's a link to the mod: https://docs.atinyshellscript.com/v2.4/awd/#nema14-bearing-idler-stacks

This requires 2x X drives and 2x Y drives. I haven't found any exact examples of how this would look in config, my guess it it would look something like this:

; Drives
M569 P10 S1 ; physical drive 10 goes forwards A1
M569 P12 S1 ; physical drive 12 goes forwards A2

M569 P11 S1 ; physical drive 11 goes forwards B1
M569 P13 S1 ; physical drive 13 goes forwards B2

M569 P0 S1 ; physical drive 0 goes forwards Z1
M569 P1 S0 ; physical drive 1 goes backwards Z2
M569 P2 S1 ; physical drive 2 goes forwards Z3
M569 P3 S0 ; physical drive 3 goes backwards Z4
M569 P4 S1 ; physical drive 4 goes forwards E0

M584 X11:12 Y10:13 Z0:1:2:3 E4 ; set drive mapping AABB + 4 z motors + 1 extruder
M350 X16 Y16 I1 ; turn interpolation off for AB axes

I know I'll have to patch in 2 more stepper drivers, I already added 2 more for the AB motors in the first place, so no big deal there. Does this look correct?

Thanks!
-Michael

Phaedrux

yes theoretically that's how you would add additional motors to an axis, though I've not seen it used with corexy before.

jay_s_uk

@Phaedrux I can run my vzbot on RRF with 2x X and 2x Y and that's coreXY

Mr Yod

I haven't made an AWD system yet, but I have 3 Z and they are configured like you did (Z1.0:1.1:1.2 on a Duet3), so I'd say it's the same for XY.

What I don't get is your "wiring":

M569 P10 S1 ; physical drive 10 goes forwards A1
M569 P12 S1 ; physical drive 12 goes forwards A2

M569 P11 S1 ; physical drive 11 goes forwards B1
M569 P13 S1 ; physical drive 13 goes forwards B2
[...]
M584 X11:12 Y10:13 Z0:1:2:3 E4 ; set drive mapping AABB + 4 z motors + 1 extruder

With this you are mapping A2B1 and A1B2, maybe it's correct and I just got confused with your comment.

Besides: you have to synchronize the steppers in AWD configuration (it's hardware, not software), so remember to do that.

michaelr123

@Mr-Yod

I'm just patching in stand alone stepper drivers to add extra drives to the duet 2 rather than using expansion boards as I couldn't get a hold of one stateside at this point. You just borrow spare pins for step, dir, enable and create additional drive channels. when I bought my voron kit I got a full klipper setup with standalone stepper chips so I'm just using those because I have them. Requires a bit of wiring but it's not too much work.

Mr Yod

@michaelr123
No, what I meant is:
your As are 10 and 12, while your Bs are 11 and 13, so I assumed A and B are your X and Y, that was in conflict with your M584 where Xs are 11 and 12 while Ys are 10 and 13.
But that's more a naming problem: maybe you named them based on the side of the printer, so X is A2B1 and Y is A1B2 in a cross configuration.

As for synchronization: you need to unscrew the pulley's set screws, move a bit the belts and then screw them again (I think, IIRC).

michaelr123

@Mr-Yod

good catch, yeah I need align the naming convention. And yep will do on the hardware synchronization. Thanks for double checking, everything's ordered so I'll start working on this in a week or so.

3Ddrifter

@jay_s_uk I’m building a vzbot with a duet 3 do you have a config file I can have with lc1 tool board?

jay_s_uk

@3Ddrifter I have it without a toolboard using a super8pro but it'll give you a starter for 10. I'll post it once I'm home

deckingman

@Phaedrux said in Config Settings for AWD voron 2.4 - coreXY:

yes theoretically that's how you would add additional motors to an axis, though I've not seen it used with corexy before.

Yes you have. My CoreXYUVAB only split the axes for homing. After homing, the drives were re-mapped such that there were 3 Alpha motors and 3 Beta motors making it a "simple" CoreXY.

Phaedrux

@deckingman said in Config Settings for AWD voron 2.4 - coreXY:

@Phaedrux said in Config Settings for AWD voron 2.4 - coreXY:

yes theoretically that's how you would add additional motors to an axis, though I've not seen it used with corexy before.

Yes you have. My CoreXYUVAB only split the axes for homing. After homing, the drives were re-mapped such that there were 3 Alpha motors and 3 Beta motors making it a "simple" CoreXY.

HA! so I have.

Mr Yod

@Phaedrux said in Config Settings for AWD voron 2.4 - coreXY:

HA! so I have.

Look at HevORT, too.