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I want to control DC motors with L293D IC using my Raspberry Pi. I wanted to set it up similarily to this:

Setup1

But then I found one article on Instructabiles, which said that it would work, but correct solution was this:

Setup2

So my question is, why is the second circuit better? What do the capacitators do? I´m fairly new to electronics, so this may be a dumb question, but I really can´t figure it out.

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marked as duplicate by Daniel Grillo, Bence Kaulics, Voltage Spike, Dave Tweed Sep 7 '16 at 0:14

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