It is hard to believe that half of a 40106 Hex Schmitt Trigger and single AD781 Sample and Hold amplifier IC can produce such a tasty lo-fi sounding effect processor. The circuit, which was developed and published by Tom Bugs on the BugBrand website is nothing short of genius with its utilization of the AD781 to sample, hold, and release a sound wave partial with each clock cycle of the 40106 oscillator. The result of such process is a very good simulation of what it sounds like to reduce the sampling rate from of a source from 44,100 Hz CD quality to 28,000 Hz NES or even lower 8,000 Hz Telephone Quality all in real-time. Impressed by the initial results and after weeks spent on research and development Steven of the Squarewave Parade asked Tom Bugs for a permission to modify the design and produce a limited run of 10 units, which are available for sale now. Each unit has been manufactured to be highly esthetically pleasing despite ultra decimating sounds under the hood. Currently each purchase also comes with a free original Suchaturnon.com design T-Shirt. Nice work Steven!
Alpha_Mod is the complete guide to modding your C64 in order to take advantage of the Prophet64 Cart, which is back in production now. Everything is included: potentiometer mods, DIN Sync, video output, and even serial interface for saving and loading files. Great pictures and lots of valuable text descriptions. Sweet post Via Hack a Day.
The so called “Atari Punk Console” device is a great start for builders interested in working with components and circuitry to produce Bleepy-Bloopy-Gitchy goodness. Using a 556 dual timer IC and a handful of other components one can be built quickly. The basis for this noise maker was a schematic originally published by Forest Mims III, which now can be found around the web and posted above for easy reference. The APC can be built into any case of your desire, and in the case of The SquareWave Parade even a vintage Atari joystick. The circuit is not only easy to build, but it is also easy to modify. The 556 IC is very resilient and cheap so don’t be afraid connect various pins to each other in order to discover new sounds. Touch contacts can be added in conjunction or as a substitute for the potentiometers and different values of capacitors can be swapped in to change the tone color dramatically and provide greater expression. Lots of links are available on this great little circuit:
Atari Punk Console is now available as a Kit from GetLoFi for only $24.
While browsing around the DIYguitarist forums looking for more info on a particular PT2399 Delay IC, I came across this link to a HUGE DIY Stompboxes gallery with schematics and build pictures. One can spend days leaching all the good distortion and classic effect schematics from this place. Make sure to save your favorites locally cause its not uncommon for this info to disappear after a while. Huge thanks to Aron Nelson for hosting this gallery. Enjoy.
This lounge style Streetmachine Alligatron circuit Bent SK-1 comes via Joerg who runs a Casiobend forum, which dispite being located in Germany is actually all written in English. Joerg is also nice enough to post many shots that were taken in the process of building this device along with advice and even a schematic of the bends, which I believe was taken from the R.Q. Ghazala book. Very nice build expecially for the first project, keep up the good work.
While browsing for something new to post I came across a new mod on the Gieskes.NL website. This time we have a circuit bent Sega Master System II with an RCA patchbay. Gijs was also nice enough to post a schematic refering to the IC which the patchbay was wired to. There are stills as well as some really neat videos on the site. It looks like certain patches only distort the scenes and not the actual characters or gameplay. Great for lofi visuals!
This acoustic piezzo trigger to serial interface is indeed pretty ghetto, but never to less there is plenty of great information on NoisyBox.net about programming a Pic Microcontroller for building such a device.The creator decided to use strait serial protocol for triggering samples through a custom application running on a PC and not through standard MIDI. Also housing projects in an external drive case does have advantages. Its cheap, rugged, and has a nice power supply built-in, so the circuit does not have to rely on battery power. The cases can always be painted if needed.