Program stack when trying to open serial port

Projects Programming
6

Thank's for your help.

holmes4: Thank's for the "delay" advise, it was helpful :wink:
Can you explain please:

auto formatting the code, Always post all the code as a single block

PaulS:

LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);

You can't use the Serial port pins for the LCD and for Serial, unless you WANT weird problems. If you do, don't whine when they happen.

So it means that i cant use the LCD_I2C and print together? No matter what?