Rosa Forza Ronzio Palla

This is the first thing I've ever built that I was able to sell. I spent a lot of time working on the led display for this it. They flash so bright and so fast, it's almost seizure inducing.

There are four oscillators from a 40106 chip and a low pass filter using a 741 op amp. The filter is taken from MFOS Weird Sound Generator. Each oscillator corresponds to a different color. They each have an on/off switch and a high/low switch.

It has a volume knob and a voltage sag knob. There is a push button next to the power switch that also turns it on. When you push it, you can hear the big capacitor fill and empty quickly.

The low pass filter has fine and coarse frequency cut off knobs and a resonance knob.

Here it is pre-paint job...

And post paint job...

 

Here is a look at the insides...

 

 Here is a close up look at the led display... 

 

Here is the circuit board...

This is the schematic for the low pass filter I used from the Weird Sound Generator.

Finally, here is a video of it...

El Pedo Ruidoso Espumosos

I've built things for pretty much everyone I know at this point. This is one of those things. I really like the tone that comes out of this thing. The paint job is also really cool. I got this like turquoise spray paint. Then I used some glitter, not that cheap dollar store glitter, the fancy kind. The kind that is super small and if you spill it, you will never get it cleaned up.

I used the Pico Paso schematic from Bleep Labs. They have so much cool shit.

Here it is...

I've never had something I've built that fit together so well. Where everything is easily accessible and the case opens and closes nice and easy.

Here is it's insides...

I changed some of the capacitor values and I added high/low switches for each capacitor. I changed the values to 1uf and .22uf for one and .1uf and .33uf for the other. The original LFO capacitor was supposed to be 10uf.

I added a switch that would let you switch between that and a 1uf capacitor. I added switches in addition to the buttons that turned on oscillators that lock them on.

The knob in the lower right hand corner is kind of a voltage sag. I used a 5k pot for it. It lowers the overall pitch and works a bit as a volume knob too.

Here is the Bleep Labs schematic...



If you have never been to bleeplabs.com, leave this page and go there right now. You can watch a video of their pico paso there and hear how awesome it sounds.

I should have a video of this in action somewhere. I'll post it up here if I ever find it...