ESP32 and Mozzi

I've been meaning to do something with the ESP32 for some time. I have some general ESP32-C3 devices, and a range of XIAO ESP32 (S2 and C3) devices too, but what I was particularly interested in was the original ESP32 as it includes two 8-bit DACs. This is my first set of experiments using a … Continue reading ESP32 and Mozzi →

Analog IO Board PCB

A number of my synth projects require the use of potentiometers. A while back I made a relatively simple stripboard pot breakout, but it isn't particularly reliable. This PCB is a pot breakout that can be used in various ways - either direct, with a 4051 multiplexer, or with an SPI MCP3008 expander. It also … Continue reading Analog IO Board PCB →

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 →

Universal Synthesizer Panel – Helios One++

The next Arduino synthesizer I've been wanting to try out, so will get the Universal Synthesizer Panel treatment, is the Helios One Synthesizer by "Blog Hoskings" (Gary White), who has provided a very comprehensive build guide as well as details into how the code works. Once again it is based on Mozzi and this is … Continue reading Universal Synthesizer Panel – Helios One++ →

Universal Synthesizer Panel – Auduino++

One of the reasons for creating my Universal Synthesizer Panel is to port over a range of different microcontroller based synthesizer engines to allow me to play with them without having to worry about building hardware. In this post I return to my Auduino MIDI Granular Synthesis and add a few more features. https://youtu.be/XZ8dcSQfuus Warning! I strongly … Continue reading Universal Synthesizer Panel – Auduino++ →

Analog Keypad Tone Controller

I've picked up a couple of cheap 3x4 keypads so thought I'd look at its potential as a music controller. https://youtu.be/C1n5NBVvfLg 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 Analog Keypad Tone Controller →

Universal Synthesizer Panel – Part 6

This is the last part (for now) in a series of posts describing how I've approached building a "universal synthesizer panel" to house a range of microcontroller synthesis projects. In the first part, I detailed the general idea and overall design of the panel. In part 2 I built the IO panel. In part 3 … Continue reading Universal Synthesizer Panel – Part 6 →

Universal Synthesizer Panel – Part 5

This is the fifth part in a series of posts describing how I've approached building a "universal synthesizer panel" to house a range of microcontroller synthesis projects. In the first part, I detailed the general idea and overall design of the panel. In part 2 I built the IO panel. In part 3 I built … Continue reading Universal Synthesizer Panel – Part 5 →

Single Pin MIDI Channel Selector – Part 2

As I mentioned in the Single Pin MIDI Channel Selector it would be nice to use a "DIP switch" on a small circuit board to give me my MIDI channel selection switch. Here is a small board that can plug directly into an Arduino's headers. Warning! I strongly recommend using old or second hand equipment for … Continue reading Single Pin MIDI Channel Selector – Part 2 →

Single Pin MIDI Channel Selector

One thing that has been missing from all of my MIDI projects so far is some means of configuring the MIDI channel without having to reload code. There are a number of approaches, but I wanted one that used the minimal amount of IO. This documents one option. In part 2 I build this into … Continue reading Single Pin MIDI Channel Selector →