Error message - Need help
“Multiple definition” means that you have something defined more than
once. According to the error message, some methods are defined both in
libraries\Adafruit_DRV2605_Library and in your sketch folder.
It looks to me like you are trying to use two copies of the
Adafruit_DRV2605 library. One of them is properly installed as a
library, and the other is within your sketch folder. You don't need two
copies. If the library is properly installed, there is no point in
copying its source files to your sketch folder. Get rid of that extra
copy and try recompiling.