I thought it was time I took another look at my Raspberry Pi Pico Synth_Dexed. I've a couple of main aims with coming back to this project: Update the build for the latest Pico SDK and Synth_Dexed. See what is involved in getting it running on an RP2350. See if a simple I2C display can be … Continue reading Raspberry Pi Pico Synth_Dexed – Revisited
Tag: dac
ESP32 WROOM Mozzi Experimenter PCB Build Guide
Here are the build notes for my ESP32 WROOM Mozzi Experimenter PCB Design. Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for any damage to expensive instruments! If you are new to electronics and microcontrollers, see the Getting Started pages. Bill of Materials ESP32 WROOM Mozzi Experimenter PCB … Continue reading ESP32 WROOM Mozzi Experimenter PCB Build Guide
ESP32 DAC Envelope Generator
I'm continuing my series of experiments with the ESP32 by considering how I might use the twin DACs onboard the WROOM module as a Lo-Fi, 8-bit envelope generator. I've not looked at envelope generation before, so this is a good excuse to see what it is all about. Important Note: This is NOT an envelope … Continue reading ESP32 DAC Envelope Generator
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
Arduino Direct Digital (Additive) Synthesis
This is actually a collection of previous projects with the code tidied up a little and combined to show a single sketch that can be configured for either PWM, an R2R ladder or the MCP4725 I2C DAC. There isn't really anything here that hasn't been talked about before somewhere, but hopefully this can act as … Continue reading Arduino Direct Digital (Additive) Synthesis
Arduino Audio and MIDI Frameworks
I've been collecting bookmarks for interesting Arduino audio projects for a while now, and having now played with the XIAO SAMD21 I started looking back over my list for other things to try. One thing that occurred to me is that there are a now a number of more powerful audio frameworks available for a … Continue reading Arduino Audio and MIDI Frameworks
Raspberry Pi I2S Audio Interface
This post looks at how to use a cheap I2S digital to analog converter as the audio output interface for a Raspberry Pi V1 model B and a Raspberry Pi Zero V1. As I mentioned last time, there are a number of ready-made "off the shelf" add-on boards you can get for the Raspberry Pi … Continue reading Raspberry Pi I2S Audio Interface
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 Twitter Follower R2R Tones
One thing I wanted to do as a follow-up to my Pico MIDI (H)Arp was to use some data from the Internet as the source for some generative music. This post is my first try at taking my Twitter follower data and turning it into sound. A follow-up project uses a Raspberry Pi Pico to turn … Continue reading Arduino Twitter Follower R2R Tones
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
Simple DIY Electronic Music Projects 