user88916: I am just beginning my journey into the Arduino world - plenty of development experience, but basically nothing with electronics outside of building computers.
The question I have involves wiring schematics - specifically for a button matrix, but it does apply more broadly. Using this diagram and Fritzing mapping, I see numerous buttons connected to each other - presumably via soldering:


My question is, can you use wire nuts (or, more specifically multi-slot lever connectors) such as these to simplify the connection process?

I apologize in advance if this seems obvious, but I get lost trying to understand how to connect this stuff because I'm so new to it all.
Thanks in advance!

user20245: Assuming that "multi-slot lever connectors" is shorting the inserted wires together I see no reason why you could not use them.
If you are adverse to soldering consider using switches and cables commonly found in arcade machines instead.
Previously crimped cables ...

And arcade style micro switches ...

Can be combined / connected to form the switch matrix your designed above.

88916: <p>I am just beginning my journey into the Arduino world - plenty of development experience, but basically nothing with electronics outside of building computers.</p>
<p>The question I have involves wiring schematics - specifically for a button matrix, but it does apply more broadly. Using this diagram and Fritzing mapping, I see numerous buttons connected to each other - presumably via soldering:</p>
<p><a href="https://i.stack.imgur.com/9cwHV.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9cwHV.png" alt="Diagram" /></a></p>
<p><a href="https://i.stack.imgur.com/V25m3.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/V25m3.png" alt="Fritzing" /></a></p>
<p>My question is, can you use wire nuts (or, more specifically multi-slot lever connectors) such as these to simplify the connection process?</p>
<p><a href="https://i.stack.imgur.com/eJXYU.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/eJXYU.jpg" alt="Levers" /></a></p>
<p>I apologize in advance if this seems obvious, but I get lost trying to understand how to connect this stuff because I'm so new to it all.</p>
<p>Thanks in advance!</p>
 20245: <p>Assuming that &quot;multi-slot lever connectors&quot; is shorting the inserted wires together I see no reason why you could not use them.</p>
<p>If you are adverse to soldering consider using switches and cables commonly found in arcade machines instead.</p>
<p>Previously crimped cables ...</p>
<p><a href="https://i.stack.imgur.com/t8M6d.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/t8M6d.jpg" alt="enter image description here" /></a></p>
<p>And arcade style micro switches ...</p>
<p><a href="https://i.stack.imgur.com/PydB4.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/PydB4.jpg" alt="enter image description here" /></a></p>
<p>Can be combined / connected to form the switch matrix your designed above.</p>
