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Topic: Why don't project 13 and 15 need a 5V power supply? (Read 1 time) previous topic - next topic

licheong

Hello everyone,
I've reached the end of the book of the starter kit and really enjoyed it. There are still quite a few things I don't quite understand though. I just wonder why project 13 and 15 don't need a 5V power supply? Is it because the external source (capacity sensor / pushbutton of a sound module) can supply enough power for it? Thanks!
Che Ong

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