Repetier_0.91 Problems

[AndThenSome09]

I upgraded my firmware today, made sure I transferred the pertinent information from the old EEPROM to the new one. My printer height is 360.2, same number I used with the old firmware which worked perfectly. Now, however, if I send my nozzle to Z0 it crashes into the glass making a horrific noise as the motors skip it seems. Seems as though Z5 is my new Z0??? What is going on here? Did I not read something? I could use some help please.

[bubbasnow]

YEA they move the z down 5 after switches are hit, you will lose 5 if you do not adjust

[AndThenSome09]

what do you mean "adjust"? Sorry, I need to add 5 to my build height?

[bubbasnow]

this is a quote from the official .91 thread

Re: Repetier 091 for Rostock MAX now available
Postby johnoly99 » Fri Jan 24, 2014 8:04 am

Av8r,

First off, the extruder not reversing doesn't sound like anything firmware related? Unless your temps are too low. It doesn't allow extruder moves below a certain temp, but, there's a little bit of a bug where it will allow it to go one way, but not the other. Check to make sure your extruder motor direction is correct, as I believe it will let it retract but not extrude. Try it with your hotend warmed up above 170c or so

Second, for the 5mm loss of Z Height, in configuration.h there is a set of variables labeled

// When you have several endstops in one circuit you need to disable it after homing by moving a
// small amount back. This is also the case with H-belt systems.
#define ENDSTOP_X_BACK_ON_HOME 5
#define ENDSTOP_Y_BACK_ON_HOME 5
#define ENDSTOP_Z_BACK_ON_HOME 5

This moves the head DOWN by 5mm after it homes, and uses that as it's max height. The reasoning is, when all the endstops are 'triggered' there's a possibility to miss a few steps when it takes off to start printing, as the endstops are in triggered mode. If you want, you can change those to 0's and you'll be back to normal. I think it's safe to give up the 5mm of Z for no chance of missed steps or endstop interference. YMMV, and experiment! Maybe you can get away with 2-3mm of back off movement, it just needs to be enough to release the mechanism in the endstops

your height is 5mm less unless you change those values inside the quote to = 0.

[Eaglezsoar]

what do you mean "adjust"? Sorry, I need to add 5 to my build height?

Read the first page. http://forum.seemecnc.com/viewtopic.php ... 422#p27422

[AndThenSome09]

Yes I just found that myself, guess I should probably do a search before I post something huh. Oh well, thank you for the help.

[bubbasnow]

AndThenSome09,

I clicked the link on your sig, does your hot end still look like this?

[img]http://i3dtech.weebly.com/uploads/2/4/8 ... 3_orig.jpg[/img]

if so your tape job on your PEEK should be adjusted to look like this attachment.

just letting ya know!

[McSlappy]

Forget z5 being the new zero, for some reason z50 is my new zero.
It's late and I'm sure I've forgotten something, but my bed height of 368 (which worked great during calibration of z height and radius) now just crashed horribly into the bed. I g28'd it and tested again. Height shows 368 as total, but ends up at the bed right about when z=50.
Measuring the distance with a tape shows 368mm..

Ugh it's late and I cannot think. Help me Obi-Wan Kenobi, you're my only hope.

[geneb]

The easiest way to handle this would be to download the 2nd edition of the Orion manual and follow the Z height instructions I've added there. It's painless and works well.

http://www.geneb.org/orion/OrionUserManual-2ndEd.pdf

AndThenSome09, if your tape job DOES look like the image bubbasnow posted, you need to fix it. The Kapton tape is blocking the cooling fins on the PEEK section.

g.

[enggmaug]

I think Bubbasnow has the new peek, whereas you, geneb, have the old version.

I had more fins on my original peek, and only one on the replacement.

So, I don't think bubbasnow is blocking any ...

[geneb]

The top image that he posted is from AndThenSome09's hot end. The Kapton tape is blocking the cooling fins that are milled in the PEEK section. THIS. IS. BAD.

g.

[enggmaug]

ouch, sorry, I realized I cannot see the first image here at work... I just can see the 2nd one. appologies.

[McSlappy]

Thanks Gene, doing it now.

[McSlappy]

So it looks like I lost about 52mm in doing this. What's exactly happening that my measurement shows 368, the eeprom/printer settings show 368mm, but according to the printer my z=52mm which should mean that my height is now 316mm.
Is there some logic here I'm missing?

*edit...
And why now does the G0 command seem to work backwards?
G0 Z0 F3500 will put me at the bed level, but G0 Z50 F3500 will put me at 50mm from the top of the towers... wtf.

*edit 2...
When I print now, the head hovers about 1mm above the bed for some reason. Just to double check things I resent the axis 0 calibration locations (x, y, z) you know the one where you put a piece of paper under each location, adjust the screw etc.. and now they are about 4mm from the bed. There's a bunch of wacky things happening and it's confusing me. I could just re-zero each of those, but then wont that screw up the calibration I did onscreen as per the orion manual?

My confusions summary:
- Why does my printable height measure at 368mm, was calibrated for that, yet the 0 point sits about 50mm through the bed? 316mm makes no sense when I measure 368m
- Why does G0 Z100 put it 100mm from the top and not the bed level? Do I now have to type G0 Z315 F3500 when I want it to arrive at 1mm above the bed? That seems strange.
- Why doesn't the normal calibration technique which worked with .80 firmware not work with .91? Should I have done none of that calibration at all?

I apologise If I missed a vital instruction on the installation. I'll go back and look over the threads to make sure.

I'm running Rostock max. .91 Repetier firmware. e3d v5 hot-end with .4mm nozzle. 1.75mm ABS filament. Bed at 90deg, head at 220.

[geneb]

When you upgraded to .91, did you run the eeprom clearing program first? Did you get the .91 code from SeeMe's github repo or from someplace else?

When you go from .80 to .91, you WILL have to recalibrate your machine. Something in the code has changed significantly enough that requires this. (and I mean a FULL re-cal - not just setting the Z-height. That was my experience when I upgraded Red Sonja a couple of weeks ago.)

g.

[McSlappy]

Bah I replied to this and it didn't show up...

Yes I ran the eeprom cleaner first and yes I got the .91 from the seemecnc github link.

I expected to recalibrate it all, and ran through the whole process in the Rostock manual again. Calibrated the arms and the printer radius, it was all looking great, I could send each of the 4 scripts and have it perfectly pinch the paper even in the center. Then printing it suddenly thinks z=0 is 52mm below the print bed.

Should I do it all again? Should I have to run the LCD calibration if I run through the normal rostock max calibration in manual?

[geneb]

Something weird is going on - you might want to check all your wiring, etc. Use the Z-height cal from the LCD and see what you get.

g.

[McSlappy]

Hmmm. Remind me which pins on the stepper motor are 1 and 2? I switched Red and Green (green was in position 1 according to the board label) since it was traveling in reverse. I tried initially just reversing it in the code, but that caused G0 to do something weird during setup.
Actually is there a place to confirm the 'correct' order order of all of the wires, just to check?

During the last LCD z height check, I ended up with 368mm - 52mm = 316mm as my z height even though I measure it at 368mm so I don't know why.

[geneb]

McSlappy, grab the manual and check out the new appendix I added. It covers the whole calibration process from the standpoint of the 0.91 firmware.

g.

[neurascenic]

McSlappy, grab the manual and check out the new appendix I added. It covers the whole calibration process from the standpoint of the 0.91 firmware.

g.

I'm all over that too!!! thanks Gene!

[geneb]

You're quite welcome. I ran through the procedure yesterday when I upgraded Orange Menace to 0.91. It's a LOT faster without the firmware compile/upload churn.

g.

[McSlappy]

Ok I'll do that, I'll start fresh!

[McSlappy]

Ok I downloaded the newest manual update, and checked in there for stepper motor wiring. Yep I had messed up in reversing the direction... This probably explains the erratic behaviour I was seeing.
Sorted that out, zeroed the eeprom and re calibrated. Much faster to calibrate .91! I had it running in a very short time. (helps that my last end-stop calibration was perfect )

It all seems to be running good, loving the new e3d head!

[AndThenSome09]

Just saw what was noted about my hot end, wish I would have known that before, maybe that was some of the cause of my billion clogs I had with the stock hot end! I have since installed a V5 E3D hot end onto my Max using pilot626s mount with the exception of the spacers, I went to my local hardware store and picked up 3 "Tension Pins" which work great as a spacer and they look cool too!

Thanks for the advice, If I use that hot end on another machine or something I'll make sure to redo the tape job to leave the fins open!