I am building a circuit with an Arduino Mega 2560 and a large amount of sensors estimated to draw about 1.5 - 2 amps. Since this exceeds the 1 amp limit of the onboard regulator, I am planning on connecting an external 5V regulated power supply directly to the 5V pin of the Arduino. Can the 5V pin, …

Limits of Externally Regulated 5V Power

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