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Trouble with 12V Relay attached to Pump - Arduino MEGA2560 - #24 by system - Project Guidance - Arduino Forum
Can I use a 12.5v DC source to power up an Arduino mega board? If so, is there a chance that the board may get spoiled if used prolonged at the same
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How to connect a 12V battery pack to an Arduino Mega 2560 - Quora
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