CoreXY issue X&Y swapped or only forward or back and not side to side

recoush

Trying to get My Corexy up ad running Z AXIS is fine my issue is with the XY only moves forward and back and never side to side have tried swapping motor leads and reversing motor plugs (My belts don't cross x is the lower pulley and Y is the upper pulley ) on separate pulleys and motors (may also be my issues not crossing thought if one motor moves side to side if both moves then front and back have to change Also tried system 1 and system 2 seems like either the belts are pulling both motors or the motor are both moving in X & Y how do i stop hold my motor (if that is the issue ) (Repetier host & Firmware 0.92)

recoush

went on you tube and another COREXY Yellow being manipulated by hand is almost identical his was held together ith spring clips. Must be a programming issue or am i overthinking can it not operate or run side to side in Manual ?

Repetier

Forward/back needs 2 motors just like side to side. Test M119 to see if side endstops are preventing the move.

Does homing also not move it a bit side to side?

recoush

will try the m119 while hovering over the E-stop, working on installing end stops mounted but have to lengthen the wires. Ok came back with the Following: end stop hit: x-min:L Y-min:L Z-min :L ?

Repetier

If endstop is hit is should show H for the endstop. If not is is configured wrong.

Roko

Did you ever figure it out? When you swap motor leads don't forget the endstop too. Also did you invert one motor connector only? My corexy uses a x-min, y-max, z-min setup.

recoush

Sorry this a bit long this time, catching up was on-call for a few days
Still no side to side all controls X&Y still only give forward /back motions

When i entered M119 came back with the Following: end stop hit: x-min:L Y-min:L Z-min :L
do i want the end stop hit ON (above) ?

Settings very basic (Corexy selected) steps and system 1 or system 2 used the online 0.92 configurator.
basic recommend settings don't recall inverting any setting and no end stops or limits have been set . (have to lengthen the wires.

DO i have to have the limits / end stops set in place for the X&Y to change direction?
Tried swapping motors X for Y ETC.. (same actions)
tried reversing the motor leads connector flipping over (front to back) (same actions)

FYI, The Z motors are disconnected removed motors leads (just for testing X&Y) they do work screw motors are 0,9 (6400 steps) the x & Y motors are 1.9 belt drive GT2 so that is set @200 steps lift at least 10 lbs cant imagine anything that weight but :>) good to have the capability,

Should i post the config H here?
Using ramps 1.4 with Repetier 0.92 firmware and host note my heat sink for the extruder for testing is a pot lid for safety as it is not mounted and the full discount LCD

See below a view of top frame X&Y this is a basic view:
This is my own build ideas based on other CoreXY systems. The basic foot print is internal 815x815x900 80/20 frame that is 2.2lbsover each z motor and my 8 lbs cat Z AXIS support and move works great.

The X&Y 0.9 motors 16 pulleys and GT2 belt only move motors are on the back as shown 8mm screw with 12mm rods for Z Axis bearings and mounts the extruder bowden work.

MartinH

You say you dont have the endstops fitted atm, i think this will prevent the motors moving in both direction until the printer is 'homed' (might be talking rubbish here)

could you post a pic looking downwards, showing the layout of the belts.

Repetier

You have endstops configured, but they do not trigger (L) so that should not be the problem.

There is on option in config to only move after homing which comes in my mind. With this set you should not be able to move also everything else is configured correctly since you can not home.

recoush

only move after homing Ah that was in the back of my mind yes, does not Know where home IS! Very Good point Guess i have a reason to wire the sensors I am going to go with the Capacitive sensor for the bed. Well a long weekend is a good thing here are two of the bottom view of the XY I'm likely going to have to remove that sensor support big hole plate, if you look to the rear it will just fit under the z axis bracket but will hit the rear support rod or the shaft from side to side those white tabs (thingverse) are z sensor end stops yes 3 of them since 3 direct drive motors My Z axis BEd moves up and down rather then the Gantry up and down :>)

recoush

keep in mind this is just after i had painted the plate so the rails belong on the screws not next tom them and the outer pulleys are off to the outside to provide tension on the pulleys :>) yes that gantry can support 3 extruders. you turn this plate over it sits upside down.

recoush

well after a minor setback (cats) chewing on my wires arrg, (covered in plastic tubing out of site out of mine (hopeful)
wired in some extension for the (X,Y) end stops with power closed contacts confirmed with m119 all X Y are H

Z Min is all the way down or should i make all the way down Z max (one more to add length to as i the bottom reached :>)

X&Y Tried moving think it tried to move Y to the right but wont move left (just slightly) but then wont move any farther right or left.

Tried homing X goes to home red light closed Y starts heading toward the rear wrong way?
my home X&Y is front left corner (0,0) or so i thought?

tried swapping connectors x&Y again same, is their a setting change maybe try system 1 or System 2 again,
Recoush

Repetier

Front left is 0,0. z min is where bed touches extruder up or down depends always what moves and is unclear language here:-)
You have I think 16 possible combinations to test for right moves. System 1/2, motor invert of 1 or 2 and swapping x with y motor. One of these will work.

With xy homing make sure to move away from endstop when hit so no endstop is triggered after homing (except z min). This is important since x or y endstop can block motors and directions then are wrong.

recoush

OK will do and i did not move XY back from end stop, at this point we are still in manual control :>) will Z min to top too have to lengthen the wires and cover so my cat wont think are treats :>)

recoush

After a lot of experimentation, made some changes to my belt and pulley system. As nothing else would make it work.
after re-aligning the belts and pulleys, and confirming by hand that twisting and turning the motor pulleys that everything works (statically)

Placed the CoreXY top back over an plunging in the ends stops i can now move in an X & Y fashion.

Reset every thing back to static (false) changed the (motor direction on x & Y to 1) now it moves.

Need to figure out the numbers MM for overall travel as it stops after about 300mm of movement so it wont make to the end stops (Min) even though the range is set to 525mm and 825mm (should have about 50-100) play travel not 200 +

the other issue, when i enter m199 nothing just says end stop! even though not on an end stop? so i must have changed something inadvertently.

Repetier

Ist M119 not M199 to report endstop status!

Steps per mm from pulley computed * 2 is what you enter I think, or it was sqrt(2). With fast corexy it is factor 1, but then you should use dev version.

recoush

sorry type meant M119 an total travel distance not MM per step. Used the configurator to make a clean copy using 0.92 and restored just the Config H now the end stops show again. making some headway, some bonehead issue crossed belts not aligned to pulleys geared pulleys instead on smooth pulleys on the gantry.

now it moves X&Y not fully correct to get y to move left, X has to got to the rear left and if i push X full forward then Y is far left front. Cant home as my 0.0 is front left have tried many changes system 1 at the moment. The end stops off show L and activated show H however never get both end stops (home) min with the opposite ends on the Y axis lost track if the manual control may be reversed it is hard to tell with the traveling axis issues.

Repetier

Ok, I'm officially confused as I do not have xy gantry myself and do not see what you are doing wrong. If no endstop is hit and your xy length are good (no software endstop triggered) you should be able to move in all directions. For pure directions always both motors must turn. Then it is just a question finding the right combination of drive system, motor revers and direction inverse depending on wiring and mechanics.

recoush

how or do i make the X move forward and y go left ?
at the moment this is backwards can you suggest something to try?