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Topic: arduino nano voltage drop (Read 92 times) previous topic - next topic


i have unchangeable power supply of 2-3 volt so i buy step up regulators and connect it to the power supply. set the output voltage to 9 but when i connect the regulator to arduino nano the voltage suddenly drop to 3v therefore the board couldn't work .

what is happening?
and how to fix this?

(note that the power supply is unchangeable)

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