XIAO Pi USB MIDI Device PCB – Part 2

Here are the build notes for my XIAO Pi USB MIDI Device 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: XIAO SAMD21, Arduino and MIDI 3V3 … Continue reading XIAO Pi USB MIDI Device PCB – Part 2

XIAO Pi USB MIDI Device PCB

One thing missing from a MiniDexed build is USB device support.  The Raspberry Pi will act as a USB host to USB devices, but the MiniDexed can't be plugged into another USB host.  Some versions of the Raspberry Pi (notably the zero and 3A+) support USB On The Go (OTG) which means they can act … Continue reading XIAO Pi USB MIDI Device PCB

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

Raspberry Pi Pico Dual MIDI Carrier – Part 2

This is the build guide for my Raspberry Pi Pico Dual MIDI Carrier to support my dual-MIDI interfaces for a Raspberry Pi Pico designed by @VE7FIM from Twitter.  Although designed largely for my own personal use with that specific dual-MIDI module, it could still also be used to link to several off-the-shelf MIDI modules if required. If … Continue reading Raspberry Pi Pico Dual MIDI Carrier – Part 2

Raspberry Pi Pico Dual MIDI Carrier

I mentioned in Raspberry Pi Pico Multi MIDI Router - Revisited that I have several dual-MIDI interfaces for a Raspberry Pi Pico designed by @VE7FIM from Twitter.  In that post I built a simple proto-board carrier for the Pico.  In this post I have a pcb design for something to do the same.  This is definitely … Continue reading Raspberry Pi Pico Dual MIDI Carrier

Raspberry Pi Pico Multi MIDI Router – Part 5

This is the build guide for the PCB version of my Raspberry Pi Pico Multi MIDI Router. If you are new to microcontrollers, see the Getting Started pages. Bill of Materials The Raspberry Pi Pico Multi MIDI Router PCB (GitHub link below) Raspberry Pi Pico 6x H11L1 optoisolator 6x 470Ω resistors 6x 220Ω resistors 6x 33Ω resistors … Continue reading Raspberry Pi Pico Multi MIDI Router – Part 5

Raspberry Pi Pico Multi MIDI Router – Part 4

From the first time I put my Raspberry Pi Pico Multi MIDI Router onto protoboard, I thought it would be handy to have a PCB version.  This post describes the design process to do just that. Update: Find the Build Guide here: Raspberry Pi Pico Multi MIDI Router - Part 5 Tutorials used in this project: … Continue reading Raspberry Pi Pico Multi MIDI Router – Part 4

Arduino Uno Dual Merge MIDI “Shield” – Part 3

Having been sitting and waiting for my Seeedstudio Fusion order from the board designed in part 2, three weeks later - it's here! So this is by way of an assembly guide and review of the design and production. Warning! I strongly recommend using old or second hand equipment for your experiments.  I am not … Continue reading Arduino Uno Dual Merge MIDI “Shield” – Part 3

Arduino Uno Dual Merge MIDI “Shield” – Part 2

I've been meaning to have a try at PCB design for a while.  I'd like to add it to the list of things I'm amateurly enthusiastically ignorant about.   I've not seen anything like my Arduino Uno Dual Merge MIDI “Shield” available anywhere but it is built of individual designs I am very familiar with, so I … Continue reading Arduino Uno Dual Merge MIDI “Shield” – Part 2