Part 3. In this post, we modulate the oscillator we previously built from a Quad NAND CMOS chip. We use another gate from this CD4093 chip to achieve this. All we need to add is another capacitor and resistor to modulate the second NAND operator by the first one.
Part 2. In this post we explore using the Quad NAND CMOS chip as an oscillator. This is actually a pretty simple circuit. We use the aforementioned CD4093 chip. All we need to add is a capacitor and a matching resistor to generate a square wave Lunetta style.
Part 1. Lunetta synths create sound by using digital logic chips. They’re very easy to build and so much fun. With just a few parts you can make a square wave oscillator, sequencer or noise machine. In this article, we take a look at the Quad NAND CMOS chip as a Lunetta.