Modulating NAND gates

Three cascaded gated oscillators from NAND Gate Schmitt Trigger chip CD4093 from example in Nicolas Collins' book "Handmade Electronic Music - the art of hardware hacking". The variable resistors are one pot and one LDR and one digital potentiometer (DS1804) driven up and down with Basic Stamp. I experimented with different size caps here, from 0.01 to 1uF.

Weird Sound Generator

My first analogue electronics project, the Weird Sound generator from Ray Wilson.

APC + filter + amp

Learning analogue electronics from scratch. Atari Punk Console with additional LDR, connected to Weird Sound Generators filter part and amped with LM386. All packed in tiny cigar cases, simple modular.