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DIY MFOS Noise Toaster KB

We always recommend visiting the MFOS website before building where the latest 'offical' information and news can be found. Here on the Soundtronics website, you will find selected information from the MFOS site plus additional information and resources to aid the building and maintaining of your MFOS synth. This is not going to happen over-night but during the course of 2014, it will start to take shape as we document our experiences in the construction of these modules. We would also like to include any experiences, hints and tips from customers as well so feel free to contact us or simply post a comment using the form at the foot of this page.

Introduction to the MFOS Noise Toaster

The best way to describe the MFOS "NOISE TOASTER" is this... "The MFOS NOISE TOASTER squeezes more fun out of a nine volt battery than you ever thought possible". This is an excellent project for anyone interested in synth-diy or "noise" boxes. You'll come back to it again and again due to it's portability, simplicity of operation and incredibly wide range of sound possibilities. Along the way you'll also learn a new circuit trick or two for use in your own hobby builds. Get ready to have a TON of creative, imaginative sound making fun.

 

The MFOS NOISE TOASTER circuit consists of seven main components: a voltage controlled oscillator (VCO), a white noise generator, a voltage controlled low pass filter (VCF), a low frequency oscillator (LFO), a simple AR envelope generator (AREG), a simple voltage controlled amplifier (VCA), and a one watt amplifier that drives a small speaker. The unit is powered by one nine volt battery and due to the low current drain of the LM324 (Lo-Power Quad Op Amp) it gets a lot of miles out of a nine volt battery. The circuit draws about 15mA to 25mA dependent on volume level when using the internal amp. When using line out the unit draws slightly under 15mA.

Features

  • Easy to build
  • Wide Range VCO
  • White Noise Generator
  • Cool low Pass Filter
  • Simple But Effective VCA
  • AR Generator with Repeat or Manual Pushbutton
  • LFO with Square, Integrated Square and Differentiated Square waves
  • Nicely Normalized Switching Scheme
  • PCB Has Pads for Interface to Other DIY Projects
  • Built in One Watt Audio Amplifier and Speaker.
  • Uses one 9V Battery (portable)
  • Low Current Design Extends Battery Life

 

Documentation & Downloads

Under Construction