Rat Rig Community [Unofficial]•12mo ago

Z Rear not moving

Forgot to plug Z Rear (VC4 300). Did it, it still doesn't move or work

guesswhatsthisparlorOP•1/20/25, 11:07 AM

guesswhatsthisparlorOP•1/20/25, 11:12 AM

this was g28

guesswhatsthisparlorOP•1/20/25, 11:31 AM

If it homes Z, the rear one doesn't move

guesswhatsthisparlorOP•1/20/25, 11:38 AM

It's not the driver either

guesswhatsthisparlorOP•1/20/25, 11:45 AM

I'm inverting the Z1 and Z2 to see if it's the cable

guesswhatsthisparlorOP•1/20/25, 11:46 AM

It's the cable

TheTik•1/20/25, 2:42 PM

well narrowed down

guesswhatsthisparlorOP•1/20/25, 4:17 PM

@TheTik do you know how I check which wire is the problem?

TheTik•1/20/25, 4:20 PM

with machine off, pull out a multimeter and check continuity

guesswhatsthisparlorOP•1/21/25, 1:24 PM

Bad news

guesswhatsthisparlorOP•1/21/25, 1:24 PM

After changing things around, I think it's the board itself

guesswhatsthisparlorOP•1/21/25, 1:25 PM

Motor 6 doesn't work

guesswhatsthisparlorOP•1/21/25, 4:37 PM

Changed the octopus board

TheTik•1/21/25, 4:38 PM

Hopefully an improvement?

guesswhatsthisparlorOP•1/21/25, 4:43 PM

Kinda

guesswhatsthisparlorOP•1/21/25, 4:44 PM

TheTik•1/21/25, 4:44 PM

If you try just homing X, does it still move diagonally?

guesswhatsthisparlorOP•1/21/25, 4:44 PM

yes

TheTik•1/21/25, 4:45 PM

and this is hybrid, not idex, and the hybrid belts aren't hooked up yet, correct?

guesswhatsthisparlorOP•1/21/25, 4:45 PM

yes

TheTik•1/21/25, 4:47 PM

Double-check, I bet one of your xy motors isn't turning

TheTik•1/21/25, 4:48 PM

if you try to move in x, and it moves diagonally, then motors aren't doing the right thing. Could be a bad motor/driver/wiring, but also could be not configured as CoreXY. It being a vcore4 and you're using ratos that last would surprise me

guesswhatsthisparlorOP•1/21/25, 4:49 PM

How do I check if it's bad motor or driver?

guesswhatsthisparlorOP•1/21/25, 4:49 PM

It's configured as Hybrid atm

TheTik•1/21/25, 4:52 PM

swap things around to see if the problem moves. Aka, swap the motor drivers for your X and Y, see if the problem stays the same or changes

guesswhatsthisparlorOP•1/21/25, 4:52 PM

guesswhatsthisparlorOP•1/21/25, 4:58 PM

You're right

guesswhatsthisparlorOP•1/21/25, 4:58 PM

My right motor isn't working

guesswhatsthisparlorOP•1/21/25, 5:02 PM

Well

guesswhatsthisparlorOP•1/21/25, 5:03 PM

It's not the driver

guesswhatsthisparlorOP•1/21/25, 5:07 PM

Inverted the L and R cables and it just vibrated

guesswhatsthisparlorOP•1/21/25, 5:07 PM

"No trigger on x after full movement"

guesswhatsthisparlorOP•1/21/25, 5:22 PM

Well good and bad news

guesswhatsthisparlorOP•1/21/25, 5:23 PM

Good: I just forgot to tighten the pulley

guesswhatsthisparlorOP•1/21/25, 5:23 PM

Now homing x and y doesn't go diagonally

guesswhatsthisparlorOP•1/21/25, 5:24 PM

Bad: z still just stops and goes "homing z" eternally

TheTik•1/21/25, 8:15 PM

Good to see progress!

TheTik•1/21/25, 8:15 PM

Z is stopping though, if it wasn't sensing the bed then it would just keep moving. Weird

TheTik•1/21/25, 8:16 PM

What z sensor are you using? And drop your printer.cfg in here

guesswhatsthisparlorOP•1/21/25, 9:35 PM

Good news: motion-wise, everything is solved

guesswhatsthisparlorOP•1/21/25, 9:36 PM

Bad news: my orbiter extruder is running inverted for some reason

TheTik•1/21/25, 9:37 PM

easy fix, drop a

in front of the dir pin

TheTik•1/21/25, 9:37 PM

Or remove if it is already there. Mine for example looks like

dir_pin: e_dir_pin # Remove ! in front of pin name to reverse extruder direction

dir_pin: e_dir_pin # Remove ! in front of pin name to reverse extruder direction

TheTik•1/21/25, 9:38 PM

If I wanted to reverse it I would do dir_pin: !e_dir_pindir_pin: !e_dir_pin

guesswhatsthisparlorOP•1/22/25, 12:51 AM

Did it

guesswhatsthisparlorOP•1/22/25, 12:51 AM

Thanks

guesswhatsthisparlorOP•1/22/25, 12:52 AM

Now it works

TheTik•1/22/25, 12:57 AM

Awesome! Feel free to mark this as solved

Z Rear not moving

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