Standard Proteus installations often do not include Arduino boards by default. You must manually add these library files:
To begin simulating, you must link the Arduino IDE with Proteus. 1. Installing the Arduino Library in Proteus proteus 8.9 sp2 professional with arduino 1.8 free
Proteus 8.9 SP2 introduced several efficiency-focused features that simplify the transition from schematic to PCB: Standard Proteus installations often do not include Arduino
Copy these files into the Proteus library folder. The typical path is C:\ProgramData\Labcenter Electronics\Proteus 8 Professional\LIBRARY . You may need to enable "Hidden Items" in Windows Explorer to see the ProgramData folder. proteus 8.9 sp2 professional with arduino 1.8 free