| Component | Library Name (default or third-party) | |----------------|----------------------------------------------| | ATmega328P | SparkFun-AVR / Microchip | | CH340G | CH340 (download from GitHub) | | LM1117 | linear-regulators | | Crystal | crystal | | USB Mini-B | USB | | Pin headers | pinhead |

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: Study how the "rat's nest" of connections is routed into a functional two-layer board.

Arduino Nano Schematic Eagle -

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: Study how the "rat's nest" of connections is routed into a functional two-layer board. | Component | Library Name (default or third-party)