Arduino MIDI R2R Digital Audio – Part 2

My Arduino MIDI R2R Digital Audio has been used, pretty much unchanged, in my Lo-Fi Orchestra performances since my first recording, but I've always had a bit of an irritating "Lo-Fi click" when starting and stopping notes. But whilst I've tinkered a little, mostly I've just lived with it, but now I'm finally taking a look. … Continue reading Arduino MIDI R2R Digital Audio – Part 2 →

“Bare Metal” Raspberry Pi Synth – Part 3

This project uses an off-the-shelf analog IO board for the Raspberry Pi for my "bare metal" Raspberry Pi v1 (model B) synth. Full index of posts in this series: Part 1: The basics of setting up an environment to build a “bare metal” Raspberry Pi synth application. Part 2: Adding potentiometer controls via an MCP3008 … Continue reading “Bare Metal” Raspberry Pi Synth – Part 3 →

“Bare Metal” Raspberry Pi Synth – Part 2

This post builds on part 1 and starts to add some IO handling code and simple synthesis code to the bare metal Raspberry Pi experiments. Full index of posts in this series: Part 1: The basics of setting up an environment to build a “bare metal” Raspberry Pi synth application. Part 2: Adding potentiometer controls … Continue reading “Bare Metal” Raspberry Pi Synth – 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 OLED R2R Waveform Generator

This project moves on a step from my Arduino MIDI Slider R2R Waveform Generator and adds a small 0.96" OLED I2C display. https://youtu.be/MGwdu017e00 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 projects for the main concepts used … Continue reading Arduino MIDI Slider OLED R2R Waveform Generator →

Arduino MIDI Slider R2R Waveform Generator

When I first started looking at using fader/slider potentiometers I always anticipated using it to generate waveforms for my Arduino MIDI R2R Digital Audio board. But as that is currently part of the Lo-Fi Orchestra, I decided I'd build a new one, hence the diversion into using PWM first whilst I decided exactly what to do. … Continue reading Arduino MIDI Slider R2R Waveform Generator →

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 →

Auduino MIDI Granular Synthesis

I wanted to return to the Auduino project and add MIDI functionality. This project describes how to add some basic MIDI receiving functionality. https://youtu.be/wBp-Wq_GsrE Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for any damage to expensive instruments or gear! These are the key Arduino tutorials … Continue reading Auduino MIDI Granular Synthesis →