The NANDulator is the creative design of PHOBoS from the electro-music diy forum. Seeing it as unique pulse generator, I pursued a layout on a single board functioning as circuit and panel.

The genius of the design is the uncertain nature of the controls which give unexpected results which are not random but have a strong musical interest. I described it as:

It's like a bar room brawl. Easy to see the overall action but hard to predict where the next punch will be thrown

The six uninsulated banana sockets; the top two are the charging and shorting diode outputs ; the bottom four are the jam inputs to the four numbered capacitors as seen above. There is no input to the final NAND but there is a dedicated screw terminal 'out' underneath after a transistor emitter follower.

The component side with the relevant capacitor options for each oscillator; space for film or electrolytic capacitance in accordance with function. The components were soldered and the board cleaned; the pots were then soldered with rosin-free but this could still be cleaned up. One of the drawbacks of white pcbs are the rosin stains are very visible but after cleaning the results are worth it. 5.08mm screw terminals for supply/ground/output. As a dedicated player NANDulator the bottom four inputs might be replaced with M6 bolts instead of the sockets so that the input modulation can be manually touched to the contact point. Pushing the input into socket was found to be rarely needed in audio frequency, however in slow movement and very low frequency manipulations the socket method has its merits.

1: Single NANDulator heard, second NANDulator modulating

2: Left NANDulator heard being modulated by Right NANDulator heard
Unpredictable what the modulation at audio frequencies does; sometimes nothing, sometimes something, sometimes kills the modulator. NANDulators just laugh at oscilloscopes and spit in the face of data acquisition systems, in fact beyond your ears they're very elusive.

3. Is two audio rate NANDulators with output from one The second is purely modulating, there is a change from charging to shorting modulation at 1.00 minute.

4. Is three, two audio, one timing NANDulators. Output from one only again. The useful rhythmic variations are coming from the timing device modulating the second which is inturn modulating the output third.

Here's the current build manual