Hi, @Bruce_Van_Essen.
Actually it’s quite simple to adjust Iroh3D’s firmware yourself as the latest release made the changes quite simple thanks to the implementation of simple grid. I did it with my printer:
All you need to do is change the GRID_MAX_POINTS_X on line 1587 on visual code to what value you want (I used 7x7 also. Wanted to change to 10 to test it out but maybe later) and then build/compile and flash:
You are right, as Iroh mentioned, 5x5 is already more than accurate than the stock 4x4, but I used the 7x7 way before I found Iroh’s fork of Marlin, so I preferred 7x7 because somehow I have not gotten any failed prints, ever.
Let me know if you want the edited version of firmware, I could share with you. I have a GitHub account but I don’t know how to share it there as an edited (or fork or whatever it is called) of Iroh3D’s firmware.
Have a great day.
Regards,
Kai