Geeetech

With Marlin’s EEPROM functions activated, a user can set, adjust, tweak or otherwise modify a printer’s settings until everything is just so, and then save them such that they will not only survive a reboot (or even a complete re-flash of the firmware), but they will also appear as the default settings every time the printer is turned on.

This is a whole lot faster, easier and more productive than making all these changes within the Configuration.h file.

In most cases, the EEPROM functions are disabled by default. The good news is that it is quite simple to activate them. Simply open up your Configuration.h file,
find these two lines:


//#define EEPROM_SETTINGS
//#define EEPROM_CHITCHAT

comment them out and make them look like this:


#define EEPROM_SETTINGS
#define EEPROM_CHITCHAT
Now save your changes and re-flash Marlin. Your EEPROM functions are now active, congratulations!

You can verify this via your LCD controller by entering the menu, then selecting Control. Inside the Control menu, you should see two new options:

Store Memory and
Load Memory
You can refer to a video from @ZennmasterM:
https://www.youtube.com/watch?v=ckP2-GrMHvA

I'll try it, but I haven't been able to successfully flash the firmware onto the GT2650

I also have problem flashing eeprom
I have changed #define DEFAULT_AXIS_STEPS_PER_UNIT (200,200,3000,95)

And when I measure in mm travel distance of X, Y and Z nothing changes, measuring shows the same as before changing to this settings above!

It ended up being a bad board for me. The new one arrived and everything works great.
The tech I was working with was extremely helpful, we went through everything it might possibly be and a bunch of things it shouldn't be but in the end the board was toast.
He said it was the first time he'd seen that problem (take that with an entire salt shaker)

Blisk wrote:I also have problem flashing eeprom
I have changed #define DEFAULT_AXIS_STEPS_PER_UNIT (200,200,3000,95)

And when I measure in mm travel distance of X, Y and Z nothing changes, measuring shows the same as before changing to this settings above!

How about modifying it in the "Motion" menu on the LCD?
And you can try changing the motor direction in the firmware then upload it to see if the firmware can be uploaded successfully.

Yes I have calibrated now with changing settings on LCD display that worked.
When I upload firmware it always shows it is uploaded succesfully.
When I upload firmare with new settings and than checked on display I can see old settings.