The Atari Punk Console is one of the most popular do-it-yourself synthesizers. The orginal circuit designed by DIY electronics guru, Forrest M. Mims III ( forrestmims.org ), back in 1980 and published in a book called the Engineer's Mini Notebook. Which I also found in the U.C.S.B. Davidson library.
Years later, the group 'Kaustic Machines' republished the design with a Line Output rather than orginally designed with an 8 Ohm speaker, and named it the Atari Punk Console.
I recreated this version of APC with the same schematic design with the following build of materials.
- 556 Timer Integrated Chip
- Mono Line-out Jack
- 1K Ohm Resistor
- (2) 500k Ohm Linear Potentiometers
- 1uf Capacitor
- 0.01uf Capacitor
- 0.1uf Capacitor
The APC works by having the two timers within the circuit in conjunction with one another. One timer is configured as a square wave audio oscillator and its output is divided by the second timer, which gives a step-like sound.