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Good morning to all and congratulations for the beautiful work. I'm Gianni from Italy. I built the CNC but I have a problem with the X-axis pitch. I made the change with the belt instead of the screw and then changed the parameters as instructed

#define DEFAULT_AXIS_STEPS_PER_UNIT {240,240,2560,200} // default steps per unit for Ultimaker
#define DEFAULT_MAX_FEEDRATE {180, 180, 6, 25} // (mm/sec)
#define DEFAULT_MAX_ACCELERATION {50,50,20,10000} // X, Y, Z, E

Changed to configuration-H and uploaded to Marlin .... The problem is that if I move the X-axis of 1 mm to the right or left everything moves 6 mm!!
It seems that the change to the parameters is not transferred to Marlin... can someone help me? The Y and Z axis move correctly.

Thank you
Gianni

Hi Gianni,

Maybe you should try to do an EEPROM clear. I think Marlin is applying the last parameters stored into its memory.

Could you tell me how to do it? I'm not very programming expert.

In your Arduino IDE, search examples->eeprom->eeprom clear
Load it in your arduino like you did for Marlin, then load your Marlin again and that's all. (but Marlin is not a good firmware for the R-CNC, Repetier Firmware works much better).

Hi,
Ok, In these days I do the test.
Thank you!

Now works. Thanks again.
Gianni

I am glad you solved your problem.
Think to post some pictures of your CNC and some parts you will machine with it.

Kachidoki a écrit : ↑09 juin 2018 17:41 I am glad you solved your problem.
Think to post some pictures of your CNC and some parts you will machine with it.

Could you tell me how to insert the photographs? I'm not an expert...

You have to upload your pictures to an external website, here we commonly use https://www.casimages.com/.
It's only in french, however it is not difficult to understand how it does work.
Once uploaded, you can copy/paste the link under "Forum" and "Grande" on the right.