Hello friends, I hope you are doing well. This is the seventeenth tutorial in our series on how to create a Proteus library. In the previous tutorial, How to Design a User Interactive Library in Proteus , we added a Push Button Module to our library and used it to switch the red lamp of our Traffic Light Module. Both parts were built entirely from Proteus's own primitives. Today, we write a model in C++ instead. Our topic is how to create a Proteus simulation model DLL in C++ . A model DLL can do things a drawn model cannot. Our Traffic Light Module still has the LOGIC property from the eighth tutorial, the one that says whether a lamp lights on a HIGH or on a LOW pin, and in the fifteenth tutorial we left it unused because a schematic model cannot honour it. A few lines of C++ can. We wil ...