Auduino Wavetable Granular Synthesis

The original Auduino used a clever trick to efficiently calculate a triangle wave to use as the "grain" for the granular synthesis, but I always wanted to try it with a wavetable to see if that would work. This project gives that a go. https://youtu.be/qA2BzSjeX1U Warning! I strongly recommend using old or second hand equipment … Continue reading Auduino Wavetable Granular Synthesis →

Arduino Touchscreen Auduino

Continuing my experimentation with my touchscreen Arduino, this project adds five touchscreen slider potentiometer inputs to my Auduino granular synthesizer. https://youtu.be/O5qaZX_7GSc Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for any damage to expensive instruments! These are the key Arduino tutorials for the main concepts used … Continue reading Arduino Touchscreen Auduino →

Arduino Touchscreen PWM Sound Output

Somewhat inspired by Daphne Oram, the thing I really wanted to do with my touchscreen was to use it to draw a waveform. I now have all the bits and pieces I need to do this, so in this project I'm combining the touch screen with PWM sound output and the "drawing" idea from my … Continue reading Arduino Touchscreen PWM Sound Output →

Arduino PWM Output Filter Circuit – Part 2

I've been using my solderless breadboard version of my Arduino PWM Output Filter Circuit quite a lot so thought it might be useful to commit it to protoboard and build it onto a simple shield. Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for any damage to … Continue reading Arduino PWM Output Filter Circuit – Part 2 →

Arduino PWM Sound Output – Part 2

My previous post looked at all the theory of using PWM on an Arduino and finished with an example showing how to use Timer 1 to generate a PWM output on pin 9. This post provides an alternative set of PWM routines that allows you to generate an audio signal on pin 3 using Timer … Continue reading Arduino PWM Sound Output – Part 2 →

Arduino MIDI Slider PWM Waveform Generator

This is a short update, to demonstrate the MIDI version of my Arduino Slider PWM Waveform Generator. A future project shows a similar system using an R2R ladder. https://youtu.be/chMNcMcGbXY Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for any damage to expensive instruments! These are the key … Continue reading Arduino MIDI Slider PWM Waveform Generator →

Arduino Slider PWM Waveform Generator

Having finally been through the details of PWM audio output, I can now link this up with my 16 slider potentiometers and start creating more complex waveforms by actually "drawing" out the wave with the pots. https://youtu.be/PbkMxU_cBL0 Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for … Continue reading Arduino Slider PWM Waveform Generator →

Arduino PWM Sound Output

Up to this point I've been using a range of audio output options, of varying fidelity, including outputting "PWM" using the Mozzi synthesis library, but I haven't actually experimented with PWM, or Pulse Width Modulation, itself directly so thought it was time I looked into it a bit more. In Part 2 there is an … Continue reading Arduino PWM Sound Output →

Arduino Analog Keypad Mozzi Synth

Back when I was messing about with LDRs I made the comment that there are many different kinds of sensors you could use to replace potentiometers in a synth. Having now had a play with analog keypads, I thought they'd be a fun thing to try. The conclusion - it works, but I'm still deciding … Continue reading Arduino Analog Keypad Mozzi Synth →

Arduino PWM Output Filter Circuit

There have been a number of occasions now where I've added a low-pass filter and voltage divider to my Arduino-based PWM outputs so I thought it was worth pulling that together into a single post to make it easy to refer to elsewhere. This is that post. There is nothing new here, it is just … Continue reading Arduino PWM Output Filter Circuit →