Hello friends, I hope you are doing well. This is the fourteenth tutorial in our series on how to create a Proteus library. In the previous tutorial, How to Add a SPICE Model in Proteus , we gave our Traffic Light Module its first working model: a SPICE subcircuit with a resistor and an LED per lamp, linked to the part with four properties. Today, we build the same behaviour a different way, by drawing it. Our topic is how to create a schematic simulation model (MDF) in Proteus . We will look inside two of Labcenter's own schematic models, draw the model of our module in a project of its own, compile it with the Model Compiler into an MDF file, attach it to our part with the MODFILE property and test it. On the way, we read the compiled file and find two mistakes before running a single si ...