user62665: I am using the Arduino Mega schematic found here and it's mostly clear, but there are a few resistors floating in the middle and I'm not quite sure what they're for or where they go:

Does anyone know what these are and where they go?

user4143: Those are unused resistors in resistor arrays.  The arrays have 4 resistors side by side in a single package. Not all of the elements are always needed, but they have to be in the schematic anyway since they exist in real life.


Elements A and D of Resistor Network 1 (RN1)
Elements B and C of Resistor Network 2 (RN2)
Element C of Resistor Network 3 (RN3)


62665: <p>I am using the Arduino Mega schematic found <a href="https://www.arduino.cc/en/uploads/Main/arduino-mega2560_R3-sch.pdf" rel="noreferrer">here</a> and it's mostly clear, but there are a few resistors floating in the middle and I'm not quite sure what they're for or where they go:</p>
<p><a href="https://i.stack.imgur.com/4IuP4.png" rel="noreferrer"><img src="https://i.stack.imgur.com/4IuP4.png" alt="enter image description here" /></a></p>
<p>Does anyone know what these are and where they go?</p>
 4143: <p>Those are unused resistors in resistor arrays.  The arrays have 4 resistors side by side in a single package. Not all of the elements are always needed, but they have to be in the schematic anyway since they exist in real life.</p>

<p><a href="https://i.stack.imgur.com/3ffBJ.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/3ffBJ.jpg" alt="enter image description here"></a></p>

<ul>
<li>Elements A and D of Resistor Network 1 (RN1)</li>
<li>Elements B and C of Resistor Network 2 (RN2)</li>
<li>Element C of Resistor Network 3 (RN3)</li>
</ul>
