Squaresynth is a module of a costumized simple synthesizer based on quad oscillator on my earlier post here. It uses the same chip, 4093 and modified it as a touch/moist sensor. I developed Squaresynth for workshop purpose, to invite the participants learning the basic electronics through introductions of electronics logis such as oscillator, introduction in reading schematics, and also introduction on electronic components. The demo showed how it sound above. Documentation, schematic, PCB design bellow.
In this post I’m sharing a tutorial on how to make a simple synthesizer which react to moisture and touch from human body. Originally, this synthesizer is based on quad oscillator using 4093, squarenoise~ module which I used for a workshop on Ho Chi Minh City, Vietnam. This module is quite simple and only using several electronic components which makes it suitable for beginners or as an introduction to DIY electronics. See the video above to see how it sounds and interacts.
Atari Punk Console is one of my all time favorite synth. It’s a combination of two 555 timer chip (or IC 556) oscillator which produced 2 layers of square wave sounds. Atari Punk Console (APC) is a name given by Kaustic Machines crew because of the “low-fi” sound it produced is similar to the games from Atari Consoles in the 80’s, with square wave similar from Atari 2600. In this tutorial I’m giving schematic, EagleCad files and PCB design of APC using NE556 Integrated Circuit. Check out the video above to hear how it sounds :)
As we can see in Quad Oscillator using 4093, combining some oscillators is quite fun. It gives layers on our sounds and gives a sense of thickness on it. Besides Nand-Gate, we can also uses Schmitt-trigger (inverter) as oscillators using the same (more or less) logic. One of the most popular and easy to found chips out there is the 40106 hex-schmitt triggers which means it contain 6 inverters that each one of them can be easily turn as oscillators. There’s loads and loads of tutorials using these chip, I followed the flux monkey tutorials and modify it bellow. Check out the video to hear how it sound above. :D
After SITS oscillator, let’s try making combining some oscillators into one sound output. There’s many ways for us to build a lo-fi instruments from cheap electronics part that we can easily find in the nearest electronic store on our town. For an example is the Quad 2-input NAND gate CD4093 (Integrated Circuit / IC) which is only about Rp. 2000,-. Like the name, this IC have 4 nand gate which each of the gate can be easily transform as an oscillator. The oscillator will produce square wave sound as Nandgate produce binary signals as the output. There are many tutorials about using this IC, my personal favorite is micro-noise from Swiss Mechatronic Art Society (SGMK) and this simple 4 block Quad Oscillator from Flux monkey which I highly recommend for those of you would like to learn basic understanding on oscillators. In this post, I’m sharing the Quad osc that I modified from flux monkey along with schematics, PCB layout and print in EagleCAD files. Check the video above to see how it sounds. :)
I always wanted to make a white noise oscillator that is simple and powerful using easily found components in Indonesia. I received a schematic from a friend of mine Lintang Kenalirangkaipakai (he didn’t create it, he found it from the internet) and give it a try to see how it sounds. I have seen this schematic when I’m surfing the internet, however I never give it a try or maybe I was too lazy :P. The schematic is very simple, only using several part that in total cost you less than Rp.10.000,- and you can get it in any electronic store in your city. Since I like it, I thought I share it along with a PCB design, EagleCAD board and schematic files and layout so anyone can use it. Or you could just prepare your breadboard (like I did) if you’re not convinced with the sound on the video and want to check it out on yourself. :)
As I’m exploring on mirror hack, I encountered a simple DIY way to coat metal using a process called Electroplating. There are tons of tutorial on the internet but still as I tried it myself, I decided to do a simple tutorial on electroplating. I created the same tutorial in Indonesian language in lifepatch site here.
A noisy square produced from the simple oscillator using NE555 timer IC
From the simple oscillator using NE555 I posted before, we can make different wave signals. The simple oscillator produced a square wave signal in which the changes between 0 to 1 goes in an instant. To produce a different wave signal, we can put a passive filters to ‘shape’ the signal output. Passive filter consists a composition of Resistors and Capacitors in which they shave and cut the square wave output. In this post, I put a together an oscillator based on MK555 schematic which combine Square, Integrator, Triangle, Sine (S I T S – to make it easier :D) in one oscillator with various different passive filter.
The easiest and cheapest way to make an oscillator is using the famous 555 timer chip, which in Indonesia it cost roughly about Rp. 800,-. It’s a simple oscillator which produced a square wave signals. You can also call it as “Poor man’s oscillator” :P. Even as simple as it is, or as cheap as it is, this oscillator is still a powerful instrument. I build this oscillator based on “Laser Ray” Schematic from “50 555 Circuits” E-book by Collin Mitchel. I also made the EagleCAD schematic and board file bellow.
When I was building my installation for the exhibition in Toluca Mexico, I received many helps from a Relder Leguz, a new good friend that I met through Marengla, Marko and Loretta, his wives. One of the helps was to print my own Printed Circuit Boards (PCB) for sonikakustik instruments that I was using to capture acoustic sounds from my installation. As we were printing our PCB, we decided to make a little documentation and creating a tutorial for anyone to try it themselves. I wrote the same tutorial in Indonesian on lifepatch site.
To start the tutorial, here’s the list that’s needed to print your own PCB.