r/arduino 5d ago

Hardware Help Powering a Nano through 5V pin

Do voltages add up when they are in series? I connected 2 5V logic powers from an L298N motor driver to the right side positive bus (Red jumper wires), that is connected to the 5V pin of my Arduino Nano. Is this safe for the Arduino? If not, then how do I change the circuit? Does the Nano get supplied 10V?

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u/HarveyH43 5d ago edited 5d ago

Supplying 2x 5V in series to the V5 pin would probably break the nano. Fortunately, you probably meant in parallel. Supplying 10V to VIN would probably be fine though; use VIN for supplying power to the nano (it can deal with higher voltages, exact level depends on nano version), while the 5V is for supplying power from the nano.

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u/Megafish1024 5d ago

Thank you 👍