I need urgent help.

Tone.cpp.o (symbol from plugin): In function `timer0_pin_port’:

(.text+0x0): multiple definition of `__vector_7’

libraries\IRremote-2.2.3\IRremote.cpp.o (symbol from plugin):(.text+0x0): first defined here

collect2.exe: error: ld returned 1 exit status

exit status 1
Error compiling for board Arduino Nano.

IR_Ultra_Inter_plus_Agr_vai.ino (9.12 KB)

Your URGENT HELP is HERE

But once you have seen that then its probably a code problem.

Do a search for __vector on this forum. You have an interrupt conflict and it has been solved numerous times on this forum.

lucaslimao:
Tone.cpp.o (symbol from plugin): In function `timer0_pin_port':

(.text+0x0): multiple definition of `__vector_7'

libraries\IRremote-2.2.3\IRremote.cpp.o (symbol from plugin):(.text+0x0): first defined here

collect2.exe: error: ld returned 1 exit status

exit status 1
Error compiling for board Arduino Nano.

I really like the smiley in the error message. Looks like the Arduino is laughing at you.