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This diagram is incomplete and subject to ongoing updates and refinement throughout this trail.
This shows an overview of some of the main components and groups of components that support the Arduino Mega2560Rev3. It's actually a bit of a mix between a typical Webel-style Package Diagram and a typical "focus" Block Definition Diagram (BDD).
This diagram (and this page) will evolve over time; for now the idea of this trail is to just introduce enough of the modelling approach using some of the "groups" shown, which collect key functionality.
On the left you'll also see some «node» blocks. These act as shared connection hubs for each of the main nets on the board.
So we can learn the modelling pattern, we're going to first look at a very simple case of conditioning of AREF using a single capacitor.