user43433: https://i.imgur.com/u5SIvLo.png
I need to know what the little "thing" that i marked in blue is and how it works.
Thanks.
picture taken here: https://www.sparkfun.com/products/13282

user359: It's most likely a decoupling capacitor meant to smooth out the voltage supply to the internal control chip.
This is standard practice to add to any chip. Power cables create a small bit of parasitic inductance in relation to the area between the lines. This inductance can induce voltage spikes when current draw changes significantly. A capacitor shrinks the effective area between the power lines.
This is also why the general advice for decoupling capacitors is to put them as close to the chip as physically possible.

43433: <p><a href="https://i.imgur.com/u5SIvLo.png" rel="nofollow noreferrer">https://i.imgur.com/u5SIvLo.png</a></p>

<p>I need to know what the little "thing" that i marked in blue is and how it works.</p>

<p>Thanks.</p>

<p>picture taken here: <a href="https://www.sparkfun.com/products/13282" rel="nofollow noreferrer">https://www.sparkfun.com/products/13282</a></p>
 359: <p>It's most likely a decoupling capacitor meant to smooth out the voltage supply to the internal control chip.</p>

<p>This is standard practice to add to any chip. Power cables create a small bit of parasitic inductance in relation to the area between the lines. This inductance can induce voltage spikes when current draw changes significantly. A capacitor shrinks the effective area between the power lines.</p>

<p>This is also why the general advice for decoupling capacitors is to put them as close to the chip as physically possible.</p>
