3 point independent Z bed levelling issues

jay_s_uk

I am an idiot.
I didn't realise the motor connectors go
0 1 2
5 4 3

This is different to the out and IO numbering which go
0 1 2
3 4 5 6
7 8

Seems a bit strange to use 2 different way of numbering ports on the same board

Danal

@Veti said in 3 point independent Z bed levelling issues:

@jay_s_uk said in 3 point independent Z bed levelling issues:
And 0,0 is at the back right due to tools being positioned at the front, preventing homing
the 0,0 position has no effect on homing.
if you can home now, you can home when the bed position is at 0,0 at the bottom left.
you just home to max instead of min.

Home to max where the physical switches are in "back,right". Absolutely true, that can be easily configured.

<rant>
Can be configured... but... why? What difference does it make? For the fourth time, FRONT vs BACK is entirely ARBITRARY. So we've now spent more posts (maybe) on where 0,0 can be, than on the original question, which was 3 motor Z. And that has been resolved by Jay reading connector numbers more carefully.
</rant>

P.S. Jay, we've all been there!

Phaedrux

@Danal said in 3 point independent Z bed levelling issues:

Can be configured... but... why?

Common decency?

Danal

OK, you got me there...

Veti

@Danal said in 3 point independent Z bed levelling issues:

If it still throws your mind for a loop, walk around and look the printer from "behind". Viola! Origin is now "normal"-ish, nearest your left hand.

thanks you are right. i dont know why that was throwing me off.
maybe its a bit of an ocd thing to want everyone to look at the same way at the printer.

A Former User

@Veti since I moved to 0,0 being in the center of the print bed (great influence by ppl on this forum) now having 0,0 in the corner makes no sense to me

Danal

@smece said in 3 point independent Z bed levelling issues:

@Veti since I moved to 0,0 being in the center of the print bed (great influence by ppl on this forum) now having 0,0 in the corner makes no sense to me

As a serious Delta guy, I have to agree. Rectangular printers can easily be 0,0 in the center, and this makes g-Code near universal for any bed on which it will fit.