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Are there softwares to simulate enough electronics and microcontrollers to learn?
(self.askelectronics)
For questions about component-level electronic circuits, tools and equipment.
1: Be nice.
2: Be on-topic (eg: Electronic, not electrical).
3: No commercial stuff, buying, selling or valuations.
4: Be safe.
Give CRUMB a try, I've used it for learning basic circuit designs, and it does a pretty good job! I think a great start is trying to get a basic 555 timer going in it, based on publicly available electrical diagrams and descriptions. The analog oscilloscope feature is super fun to play with.
https://store.steampowered.com/app/2198800/CRUMB_Circuit_Simulator/