DIY: Benjolin von Rob Hordijk extended

DIY: Benjolin von Rob Hordijk extended

Long Video from Rob

https://www.youtube.com/watch?v=F5muc9OBXeE

Video from „Thursday Nigh Machine with one Benjolin I made, good sounds to produce with:

https://www.youtube.com/watch?v=F5muc9OBXeE

 

New and cheap case and front build for a original workshop Benjolin from years ago:

Buy a case from Reichelt fits for the Benjolin PCB (160/100)

Drill hols for knobs and add a DC/DC switcher for power supply (5V to +-12V 1,5W) …

DIY: Benjolin von Rob Hordijk extendedDIY: Benjolin von Rob Hordijk extended

 

3HE Benjolin:

Benjolin with 3x fader, down left .

 

 

DIY: Benjolin von Rob Hordijk extended

 

 

DIY:

I dont build Benjolins or sell kits, it´s only DIY.

Link: http://electro-music.com/forum/topic-38081-25.html, read this thread before asking me further questioins.

My bend adds a mixer for both VCO´s and original soundsource, called PWM. Benjolin origins mix both VCO in a comperator for for its complex sooundsource for filter and Rungler. Additionals: Rungler mode switch, input to contorol Filter and CV ins for VCO, crossmodulation and output for all waveforms.

If someone is interested in a frontpanel like mine feel free to ask me.

The hack is: Wire a little 2x mixer with 2x/ R470k on both pots, feed each pot direct with puls 1+2  and go with the sum (after R´s) direkt into the filter (U3D, pin13).

PWM pot handels original Benjolin sound coming out of comperator (U6C, Pin8). Change R 150K to 100K and from this R go to ground via PWM pot. So it´s possiblbe to fade Benjolinsound (PWM) to ground without  side effect. That´s  it, a littel 3x mixer. Now you can mute the whole baby, practical for performance.

It´s a good idea to build a standalone Benjolin, because it´s a big little intrument worth learn to play.

So sieht das Benjolin aus dass ich für mein System gebaut habe. Neben der eigentlichen chaotischen Klangerzeugung habe ich die beiden Oszillatoren seperat herausgeführt und einen kleinen Mischer integriert. Nun besteht die Möglichkeit das Benjolin stumm zu machen oder die drei Klangquellen zu mischen. Das erweitert die Maschine enorm. Der Umbau ist nicht besonders kritisch.

DIY: Benjolin von Rob Hordijk extended

DIY: Benjolin von Rob Hordijk extended

 

 

DIY:

I dont build Benjolins or sell kits, it´s only DIY.

Link: Benjolin infom: electro music forum

read this thread from electrom-music.com carefully before asking me further questioins. There also the answer of extende Rungler funktionality. My bend is only an additional mixer for both VCO´s and original soundsource, called PWM.

The hack is: Wire a little 2x mixer with 2x/ R330k on both pots (A50k), feed each pot direct with puls 1+2  and go with the sum (after R´s) direkt into the filter (U3D, pin13).

PWM pot handels original Benjolin sound coming out of comperator (U6C, Pin8). Change R 150K to 100K and from this R go to ground via PWM pot. So it´s possiblbe to fade Benjolinsound (PWM) to ground without  side effect. That´s  it, a littel 3x mixer. Now you can mute the whole baby, practical for performance.

It´s a good idea to build a standalone Benjolin, because it´s a big little intrument worth learn to play.

If someone is interested in a frontpanel like mine feel free to ask me.

So sieht das Benjolin aus dass ich für mein System gebaut habe. Neben der eigentlichen chaotischen Klangerzeugung habe ich die beiden Oszillatoren seperat herausgeführt und einen kleinen Mischer integriert. Nun besteht die Möglichkeit das Benjolin stumm zu machen oder die drei Klangquellen zu mischen. Das erweitert die Maschine enorm. Der Umbau ist nicht besonders kritisch.

benjolinpcbv2,1FP (frontpanel design)