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Is I had my ABL workig good and printing good. I decided to shorten the plunger for the endstop and make it out of abs. So the problem is after I adjust for the offset like zennmaster does the hot end wants to push into the glass. I have tries recalibrating it many times with the same problem. I have also tried with a fresh firmware with my numbers put in and still wants to push into the glass. I don't know what to do next and need help from this awesome forum.
It sounds like you have made the Z_PROBE_OFFSET_FROM_NOZZLE to small. And also remember this number is supposed to be negative.
Ill double check when I get home
So I checked the Z_PROBE_OFFSET_FROM_NOZZLE and it is set to -3.0. And everytime that I have the nozzle touch the glass and zero out the readings then have the probe touch the same spot I get the same numbers and it still wants to push into the glass.
then arbitrarily make the number less negative, by .1-.2 increments until it is where you want :-) thats onw of the great things about ABL... you can make it work... M851 Z-X.XX will change your z probe offset without reflashing until you find what works then you can flash it...
That's how i have been using more recent versions of marlin while testing... but i'm about to roll back to a more stable version I need to get prints done...
So i have tried as you have said sniffle and i started at z-4.00 now im up to z-11.00 and seems to not getting any better.
-11 is MORE negative than -4. Sounds like you're going the wrong way.
increasing the negative value will make the nozzle closer to the bed . if you wanted to be higher you need to decrease the negative value.
from -4.00 to - 11.00 will be 7 mm closer to the bed ........
yeah if you need to get further away from the bed you need to go towards 0, do -3.8 or greater than 4.0
I feel like an idiot. I quickly read your first post as I didnt have much time to work on my printer and now when I read it again it makes a lot more sense now. Gonna try it again today and see what happens.
So I have it working now with the original numbers. Come to find out in the firmware under Additional Features define Z_PROBE_OFFSET_RANGE_MAX was set to -5.00. So when I used -4.00 it was not in range and it would just default to -5.00 and it would push the head into the glass. I change it to -3.00 and it is working just fine.
So here is a weird thing when I put the numbers in the terminal I can print and everything is fine. Now when I put those numbers in the firmware and load it up it wants to push the nozzle about 4 mms into the glass. I have tried adjust the numbers and no matter what I use it wants to push the nozzle 4mm. I am stumped.
In pronterface do m502 and then m500 to store setting. After flashing the firmware.
I will try that
Can you expand on that a bit? Does this only apply when you enable EEPROM storage?Quote:
Originally Posted by rhonal89
So the m502 and m500 commands did the trick
Quote:
Originally Posted by Hankus
This problem has been a plague to everybody trying to get Auto Bed Leveling going. Very few people actually store values in the EEPROM. But most people end up with bad values there. So when you are working to turn on Auto Bed Leveling, it is often best to just turn off the EEPROM until you have it running. That forces it to use the values #define'd in the Configuration.h file.Quote:
Originally Posted by Draud
Where in Marlin do I deactivate the EEPROM?
In Configuration.h ! Make sure these #define's have a // in front of them:Quote:
Originally Posted by Draud
//#define EEPROM_SETTINGS
//to disable EEPROM Serial responses and decrease program space by ~1700 byte: comment this out:
// please keep turned on if you can.
//#define EEPROM_CHITCHAT
Thanks so much do the help
Roxy thanks for the confirmation of what I believe I picked up some time ago in another thread that you contributed to. The question that still is on my mind though is, okay I've got EEPROM turned off and my ABL has been working fine for a couple of weeks now, why would I want to turn EEPROM back on if the settings I use are hard coded in the firmware?Quote:
Originally Posted by Roxy
Also if it hasn't been said before, Thank You Roxy for all the contributions you continue to make to Marlin and in particular our Makerfarm printers.
Well... Some people do tweak their settings back and forth. Especially things like acceleration and various speeds. But I'm of the opinion I would rather have my Configuration.h file be exactly what the printer is going to do. With that said... Some people are saving their Auto Bed Leveling correction matrix to EEPROM so they don't have to do a bed leveling every time. So, who knows???Quote:
Originally Posted by Hankus
Well... I'm all for helping Makerfarm printers but it is RepRap printers that I'm focused on! :) It just so happens MakerFarm is a very nice RepRap!Quote:
Originally Posted by Hankus