Thursday, September 6, 2012

MFOS Noise Cornucopia Module (white noise generator)

I bought two PCB's from MFOS.  The one I'm holding is the Noise Cornucopia PCB.  They primarily gear stuff towards 12v+/- systems but they usually explain which components to change out for a 15v+/-, which is what I've got running.

For the most part, putting these kits together is like building legos,  I ordered all the parts from Jameco and waited patiently for them to arrive.  I did all the careful stuff like heat sinking my transistors as I soldered them and so on.

I used those chip saddle things to be safe. 

As you can see in this picture, I didn't have any 43k resistors--so I made some by twister 2 resistors together.

I got creative with mounting the circuit board.  usually I mount the board parallel with the panal--with a couple of stand-off screws but this board was wider then the ones I use for my DIY stuff.  I decided to use that piece of walnut as a bracket--it also stiffened the panel up, which was nice. 

 Besides generating a few different kinds of noise, it also has a random gate generator. There's a little blip on the MFOS page about setting multi-turn trimmer pot (R8) on the board. You need an oscilloscope for that, which I don't have, so I just kind of turned it until I liked what it was doing.  I am fairly certain it adjusted how the Random gate generator operated.

The noise modules is the 4th from the left.  I kind of like how my synths is mostly unlabeled--making it almost inaccessible to anyone but myself.

Next up, I'm gonna redo my Ring Modulator module and build a slightly more complex mixer circuit.