...If you try to download all of them, this is not helpful and can impact negatively on the Project build, because the wide range of options can easily cause confusion and hinder project progress.
Spreadsheet to calculate what stepper motor to use.
https://sourceforge.net/projects/myfp2esp32-s3-focus-controller/files/documents/Nema-Stepper-Motors.xlsx/download
Spreadsheets to calculate CFZ
https://sourceforge.net/projects/myfp2esp32-s3-focus-controller/files/documents/CFZ%20Spreadsheets.zip/download
Focuser Basics Guide (PDF) - shows how to derive the correct motor requirements for your system (mandatory reading)
https://sourceforge.net/projects/myfp2esp32-s3-focus-controller/files/documents/Focuser%20Basics.pdf/download