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dual extruder robo r 1+

Discussion in 'Projects' started by allen33, Mar 1, 2017.

  1. allen33

    allen33 Member

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    yeah that's what I meant. would the printer still be accurate enough to produce a quality part?
     
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yes, that is not a huge error :)
    Considering how far off the stock ones generally are, 5% is nothing.
    If you are determined to perfect them though, tune the stepper drivers.
    I think I would just see what quality you get with that ...
     
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  3. allen33

    allen33 Member

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    Thanks I didn't even think of it as a percentage saying it like that makes that error sound so much smaller
     
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  4. allen33

    allen33 Member

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    I am still trying to calculate esteps for one of my extruders and every time without fail it is extruding about 120 mm of filament when it's only supposed to be 100 mm and I am doing the ratio and calculation right what am I missing? it is almost like the eeprom is not storing the numbers given to it
     
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    You have to reflash the firmware with the correct eSteps
    then reload the EEPROM from the new configuration

    Any other way is less than certain.
     
  6. allen33

    allen33 Member

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    is reflashing more than uploading the firmware to the arduino mega in the printer? also how do you reload the EEPROM from the new configuration?
     
    #46 allen33, May 12, 2017
    Last edited: May 12, 2017
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    This is posted dozens of times:

    ==== EEPROM GCodes ====

    M500 Store current settings in EEPROM for the next startup or M501.
    M501 Read all parameters from EEPROM. (Or, undo changes.)
    M502 Reset current settings to defaults, as set in Configurations.h. (Follow with M500 to reset the EEPROM too.)
    So after firmware is fixed you need the M502 and an M500 at some point for them to work.
     
  8. allen33

    allen33 Member

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    so I found that stuff but the one thing I am worried about is will running M502 affect anything I have changed like the motherboard number? One other question is it possible to fry the EEPROM because I came across a forum that said it was possible to do that if it had code loaded to it too many times?
     
  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    M502 reloads the EEPROM with what ever you defined in configuration.h

    Sent from my BNTV450 using Tapatalk
     
  10. allen33

    allen33 Member

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    my esteps for both extruders are: 150 and 1916 is it ok that the numbers are that different?
     
  11. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    If they are different types of extruders then that is completely normal.
    If they were both GregsWade I would think that odd. Those numbers are not either one even remotely close to what your average GregsWade would be. However direct extruders are completely different from geared ones.
     
  12. allen33

    allen33 Member

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    it seems like both extruders are using the same esteps do you have any idea why that would be happening?
     
  13. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Not if you edited the CONFIGURATION.H and then reloaded the EEPROM.
    The version of Marlin that was on the C2 worked fine when we did that on the second extruder.
     
  14. allen33

    allen33 Member

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    I reloaded the EEPROM a few times and the same results it seems that something isnt working right because the esteps for both extruders appears the same. on a side note would the marlin firmware from the C2 work on the r1+?
     
  15. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Not without modifications.

    How are you verifying that the eSteps are unchanged? Did you try calibrating them?
     
  16. allen33

    allen33 Member

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    I have tried using the ratio for esteps and it doesn't seem like the equation works
     
  17. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    It works :)
    I have calibrated an R1, and R1+ and a C2 and a Delta (on Repetier firmware though for that one -- not Marlin)
     
  18. allen33

    allen33 Member

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    I guess I may be a little special then. how many times do you have to try to calibrate for esteps usually?
     
  19. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Once, twice at most.
    Once gets it really close and the second pass will nail it.
     
  20. allen33

    allen33 Member

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    why would I only be able to move the stepper motors on the x y and z axis in the positive direction?
     

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