BUILD(II): The ATARI PUNK CONSOLE
The Atari Punk Console (commonly shortened to APC) is a popular circuit which utilizes two 555 timers or a single 556 dual-timer IC. It has been modified slightly from the original circuit, ‘classified’ as "Sound Synthesizer", that was published in the famous “RadioShack” booklet: "Engineer's Notebook: Integrated Circuit Applications" in the year 1980 and was after few years recognized popularly as "Stepped Tone Generator" in "Engineer's Mini-Notebook - 555 Circuits" by its lead designer & author, Forrest M. Mims III (Siliconcepts, 1984).
It is nowadays dubbed as "Atari Punk Console" (APC) by Kaustic Machines crew because of its "low-fi" sounds resembling the famous classic Atari console games from the 80s, that replicates a square wave output similar to the Atari 2600. Kaustic Machines added a -4db line level output with volume control to the circuit which was originally designed to drive a small 8-ohm mini speaker.
The Atari Punk Console is actually a square wave oscillator which further drives a monostable oscillator that creates a single (square) pulse. There are two controls, one for the frequency of the oscillator and one to control the pulse width. The controls are usually potentiometer based (can be modified to adapt capacitive slide interface). The circuit is simple DIY ‘noisemaker’ that is relatively inexpensive and easy to build, can be easily modified & configured by replacing components from the perf-board (of course you have to de-solder it, in my case). Try it in your pastime, and you will definitely have some classic fun (SIDE EFFECTS: infuriating & annoying for others).
Things to search for (will be lying around..)
- 556 IC (or 2x 555: worstcase)
- Resistors valued : 1K, 10K, 4.7K
- Capacitors valued : 10nF, 100nF
- Potentiometers(x2) : 470K each (or 500K)
- 3.5mm mono audio-jack
- 9V battery
- itsy-bitsy wires as links
Original Circuit Connections (Kaustic Machines Crew)
Prototyping on a Perf-Board (rounded manually)
Fun Fact: It took quite longer time to cut and file the perfboard, than it was required for the soldering-part...#MakerSpirit
For sorting things out, you can do it in a Jedi Style (Breadboarding), or become Sith Lord (CNC Milling)
WARNING: no video this time, only ACOUSTICS … … …
Cosmic BONUS CONTENT: Tune in your radio receivers, for listening to CMB Radiation, (the remnant reaction to Big-Bang action...)