Exploring Arduino book

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  • OrangeJulius
    New Member
    • Jun 2021
    • 3
    • USA
    #1

    Exploring Arduino book

    Am going through the Exploring Arduino 2nd edition by Jeremy Blum. One of the projects is a servo motor being controlled by the Arduino that is powered by a separate 5v supply the author suggests to build. Is a 7805 regulator with two 10uf electrolytic caps. One running from power in lead to ground, the other from power out to ground. The servo sounded like hell. I double checked, replaced, then completely removed both caps. After removing, the servo ran a lot better. I've noticed the author suggests this power supply setup in a few projects. Should i just completely do away with the caps on the 7805 from here on out?
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    • stj
      Great Sage 齊天大聖
      • Dec 2009
      • 30985
      • Albion
      #2
      Re: Exploring Arduino book

      add a ceramic 0.1uf cap on the output side.

        Comment

        • OrangeJulius
          New Member
          • Jun 2021
          • 3
          • USA
          #3
          Re: Exploring Arduino book

          Originally posted by stj
          add a ceramic 0.1uf cap on the output side.
          And leave the 10uf caps, or remove those?

            Comment

            • stj
              Great Sage 齊天大聖
              • Dec 2009
              • 30985
              • Albion
              #4
              Re: Exploring Arduino book

              leave them - or increase them to 100uf.

                Comment

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