There is even a dedicated website of the Atari Punk Console with shows a wide variety in both electronic circuits and enclosures (http://www.ataripunkconsole.com/).
The circuit is similar to some of the circuits in experiment 17 especially the ones shown in figure 4-28 and 4-30 of the book, two circuits I haven't built yet. The Atari Punk Console consists of two 555 chips that are chained. The first 555 chip is in astable mode and drives a second 555 in monostable mode (compare this to figure 4-28 where a 555 chip in monostable mode drives a 555 in astable mode). Each chip has one potentiometer connected to the pin 7. These potentiometers function as the user interface of the simple synthesizer.
In this first step I have built the APC on a breadboard. I used the schematics and components shown below except for the potentiometers which are 500k in my case. The result is satisfying because your able to play with the console and generate some decent sounds with it.
|Schematics of Atari Punk Console|
|Breadboard with APC circuit|
|Close-up of APC with two 555 chips in the middle.|
|Another close-up of the circuit|