The Benjola is a kit format adaptation of the <a href="http://casperelectronics.com/finished-pieces/benjolin/">Benjolin</a> synthesizer.
It has been designed to be easy to assemble and modify and I've added a few cool new features along the way. 
<em>This project is officially sanctioned by Rob Hordijk, the inventor of the Benjolin.</em> 
<a href="http://casperelectronics.com/wp-content/uploads/Benjolin/Benjola/TheBenjola.jpg"><img src="http://casperelectronics.com/wp-content/uploads/Benjolin/Benjola/TheBenjola-293x300.jpg" alt="" title="Print" width="300" height="304" class="alignnone size-medium wp-image-1009" /></a>.

The Benjola is a deceptively simple analog circuit capable of generating a remarkable range of abstract, melodic and rhythmic sounds.
It is made up of a small number of modules:
-Two voltage controlled  triangle & square wave oscillators 
-One resonant 2-pole state variable filter (with a few tricks according to Rob).
-A voltage controlled lo-fi echo.
-A chaotic pattern generator invented by Rob called a "Rungler".

<strong>VCO</strong>
<a href="http://casperelectronics.com/wp-content/uploads/Benjolin/Benjola/VCO_v1.jpg"><img src="http://casperelectronics.com/wp-content/uploads/Benjolin/Benjola/VCO_v1-300x192.jpg" alt="" title="VCO_v1" width="300" height="192" class="alignnone size-medium wp-image-983" /></a>

<strong>VCF</strong>
<a href="http://casperelectronics.com/wp-content/uploads/Benjolin/Benjola/VCF_v1.jpg"><img src="http://casperelectronics.com/wp-content/uploads/Benjolin/Benjola/VCF_v1-300x135.jpg" alt="" title="VCF_v1" width="300" height="135" class="alignnone size-medium wp-image-984" /></a>

<strong>ECHO</strong>
<a href="http://casperelectronics.com/wp-content/uploads/Benjolin/Benjola/BenjolaEcho.jpg"><img src="http://casperelectronics.com/wp-content/uploads/Benjolin/Benjola/BenjolaEcho-300x207.jpg" alt="" title="BenjolaEcho" width="300" height="207" class="alignnone size-medium wp-image-986" /></a>

<strong>RUNGLER</strong>
The rungler is the beating heart of this instrument and is somewhat difficult to explain. Rob talks about his "deluxe"rungler synth module
in the video below. The rungler in the Benjola is a bit simpler than the one in the video but similar enough to give you a good idea of what it does.  
<a href="http://casperelectronics.com/wp-content/uploads/Benjolin/Benjola/Rungle_v1.jpg"><img src="http://casperelectronics.com/wp-content/uploads/Benjolin/Benjola/Rungle_v1-300x185.jpg" alt="" title="Rungle_v1" width="300" height="185" class="alignnone size-medium wp-image-985" /></a>

<iframe width="560" height="315" src="http://www.youtube.com/embed/n_PgJ7BmGR8" frameborder="0" allowfullscreen></iframe>