I'm designing a PCB that currently follows the older Arduino design with an Atmega328P and an FTDI FT232RL USB chip. I've already got a working design using a 10k pull-up on the RESET pin of the MCU and an inline 0.1uF cap on the DTR line from the FT232RL to the RESET pin. This is all very standard …

Multiple Devices Connected to AVR Reset Pin

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