XIAO SAMD21, Arduino and MIDI – Part 4

One of the nice things about the SAMD21 based microcontrollers like the XIAO is the embedded USB support. Whilst it can make the uploading a little, er, interesting, it also allows for the building of USB devices. This post looks at how to turn the XIAO into a USB MIDI device for more MIDI routing. … Continue reading XIAO SAMD21, Arduino and MIDI – Part 4 →

XIAO SAMD21, Arduino and MIDI – Part 3

In this post I wire up the DAC and start up Mozzi using my Arduino Multi-pot Mozzi FM Synthesis on the Seeedstudio XIAO SAMD21 board (previously known as the Seeeduino XIAO). Previous parts in this series: Part 1 - Introduction to the XIAO SAMD21 and some projects to get started. Part 2 - Looking at accessing … Continue reading XIAO SAMD21, Arduino and MIDI – Part 3 →

XIAO SAMD21, Arduino and MIDI – Part 2

In this post I look at what is involved in getting multiple MIDI interfaces connected to the Seeedstudio XIAO SAMD21 boards (previously known as the Seeeduino XIAO). Previous parts in this series: Part 1 - Introduction to the XIAO SAMD21 and some projects to get started. Part 2 - Looking at accessing additional serial ports … Continue reading XIAO SAMD21, Arduino and MIDI – Part 2 →

XIAO SAMD21, Arduino and MIDI

I've had a few Seeedstudio XIAO SAMD21 boards (previously known as the Seeeduino XIAO) for a while but haven't really done much with them. I had a brief go with Circuitpython to build a CircuitPython USB to Serial MIDI Router but that is all so far. Having been inspired by a recent post on the … Continue reading XIAO SAMD21, Arduino and MIDI →

Tactile Button Keyboard PCB – Part 2

Here are the build notes for my Tactile Button Keyboard PCB. 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 tutorials for the main concepts used in this project: Open Music Labs: Input Matrix Scanning Arduino Nano MIDI … Continue reading Tactile Button Keyboard PCB – Part 2 →

Tactile Button Keyboard PCB

I've used tactile buttons as musical keyboards in a number of my projects now and either build them on solderless breadboard, which is quite unreliable, or on stripboard, which is a little messy. This PCB design is for a one-octave tactile button keyboard PCB that has various modes of operation and is extendable to two … Continue reading Tactile Button Keyboard PCB →

Analog IO Board PCB – Part 2

This is the build guide for the Analog IO Board PCB. 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 in this project: Simple Potentiometer Breakout Arduino Multi-pot Mozzi FM Synthesis … Continue reading Analog IO Board PCB – Part 2 →

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 →