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Powering up via 5V I/O 4. Using batteries greater than 5V connected in... | Download Scientific Diagram
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Are these normal? 5V pin got only 4.76V and 3.3V pin got only 3.15V - Microcontrollers - Arduino Forum
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Amazon.com: diymore Arduino Pro Micro 16MHz 5V with 2-Row Pins Header Module Board ATmega32U4 Module Board Micro USB Pro Micro Development Board Microcontroller : Electronics
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