Added contributed YASAVUM schematic

input/blog/2016/2016_05_03_yasavum.md

@@ -73,6 +73,16 @@ At first I simply controlled the MOSFETs using digital I/O. Later I've added PWM
 
 The code for reading the MSGEQ7s has been taken without much modifications from [my LED-Cube project](https://github.com/xythobuz/LED-Cube/blob/master/AudioFirmware/eq.c).
 
+### Schematic
+
+Thanks a lot to YouTube user [Wilson Carvajal](https://www.youtube.com/channel/UCNQu6mF5goM0MjIR28gd4FA) for creating this schematic depicting the left half of the display as well as the Arduino and the MSGEQ7s. For the right half, simply connect another 10 pins to the Arduino, one for each row. The seven additional MOSFETs can be connected to the same pins that already drive the MOSFETs for the left half.
+
+<div class="lightgallery">
+    <a href="img/yasavum_schem.png">
+        <img src="img/yasavum_schem_small.png" alt="Arduino Mega added">
+    </a>
+</div>
+
 ### Licensing
 
 YASAVUM is released under the [Creative Commons Attribution Share-Alike](http://creativecommons.org/licenses/by-sa/4.0/) license.