“Bare Metal” Raspberry Pi MiniDexed DX7

One project I've had my eye on for some time is Dexed: "Dexed is a multi platform, multi format plugin synth that is closely modeled on the Yamaha DX7". More specifically I noticed there was a version for the Teensy called microDexed that I really wanted to try; that it is also one of the synth … Continue reading “Bare Metal” Raspberry Pi MiniDexed DX7 →

“Bare Metal” Raspberry Pi Synth – Part 4

I wanted to revisit my "Bare Metal" Raspberry Pi Synth as I only really just got started. But having left it some five months since last having a look, I had a bit of updating to do! But then this post describes how I built and tried out the "minisynth" application from Rene Stange (rsta2) … Continue reading “Bare Metal” Raspberry Pi Synth – Part 4 →

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 →

Raspberry Pi Zero PWM Audio Interface

The Raspberry Pi Zero (I'm talking about V1 here, with no wireless. At the time of writing, V2 has just been released and I've yet to have a play with that!) has capabilities on par with the first generation "full" Raspberry Pi, so I was keen to try my “Bare Metal” Raspberry Pi Synth on one. … Continue reading Raspberry Pi Zero PWM Audio Interface →

Raspberry Pi v1 Model B Synth Board

If you've been following along, you'll know I've been playing around with an original Raspberry Pi v1 model B as the engine for some digital sound synthesis. This is a slight project tangent to build an analog IO and MIDI add-on board. Note that this does not conform to any standard for Raspberry Pi add-ons … Continue reading Raspberry Pi v1 Model B Synth Board →

“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 →

“Bare Metal” Raspberry Pi Synth

The Raspberry Pi is an "SBC" - a single board computer, whilst the Arduino (and the Raspberry Pi Pico for that matter) is a microcontroller. Simplistically a single board computer is, well, what most people would think of when they think about a computer - a board (with or without a case!) that you plug … Continue reading “Bare Metal” Raspberry Pi Synth →