Is someone know how to use "Find Home"

[Gabriel]

You can dive deeper into encoder troubleshooting by downloading and using the Arduino IDE. This will allow you to see if the encoder signals are being received by the Arduino.

@Gabriel

You can view messages the firmware is sending by opening the Serial Monitor (in the Tools menu) after plugging the Arduino into your computer. Lines starting with R84 and R85 include the encoder positions. See the response section of the readme for more information.

@Gabriel

Change the line setting (to the left of the baud rate setting) to Both NL & CR.

Then send some GCODE (input box in the top): G00 X200 (move X axis motor 200 steps, which is one rotation). The R84 and R85 responses should be given. You can move any axis motor, or even several at a time: G00 X200 Y100 Z-300. These are absolute movements, so return to zero with G00 X0 Y0 Z0 before trying again.