Hello friends, I hope you are doing well. This is the nineteenth tutorial in our series on how to create a Proteus library. In the previous tutorial, How to Add a Live Control Panel to a Proteus Component , our Traffic Light Module learned to show its pins and lamps on a panel and to change its LOGIC setting with a click while the simulation runs. So far, we tested every part with logic switches. Today, we test the library the way its users will use it. Our topic is how to test a custom Proteus library with Arduino . A library is only finished when it works with a real program. Logic switches show that a part reacts to its pins; a sketch on a simulated microcontroller shows that it reacts to them at the right speed, in the right order and together with other parts. We will build a test pro ...