Arduino: 1.8.15 (Windows 10), Board: "Arduino Uno"
Tone.cpp.o (symbol from plugin): In function `timer0_pin_port':
(.text+0x0): multiple definition of `__vector_7'
libraries\NewPing\NewPing.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 Uno.
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
Two libraries are trying to use the same interrupt, probably for timing purposes
so what do i do
Use different libraries or maybe don't use one or other of them at all. You did not post your code so it is not obvious which libraries you are using apart from NewPing
okay
The author of the NewPing library has provided documentation about this specific error:
https://bitbucket.org/teckel12/arduino-new-ping/wiki/Multiple%20Definition%20of%20"__vector_7"%20Error
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