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 MIDI Note Balancer

One use for my Raspberry Pi Pico MIDI Splitter is as a way to get pseudo polyphony from a range of monophonic sources. I've called this "note balancing" from the idea of "load balancing" online systems - sharing out the "ask" across a number of devices. In a similar way, this can take requests to play … Continue reading Raspberry Pi Pico MIDI Note Balancer →

Raspberry Pi Pico MIDI Splitter (TTL) – Part 2

This is the build guide for my Raspberry Pi Pico MIDI Splitter (TTL). Tutorials used in this project: Raspberry Pi Pico MIDI Channel Router Raspberry Pi Pico Multi MIDI Router – Part 4 Notes on KiCad for PCB design: Arduino Uno Dual Merge MIDI “Shield” - Part 2 If you are new to microcontrollers, see the Getting Started … Continue reading Raspberry Pi Pico MIDI Splitter (TTL) – 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 MIDI Splitter (TTL)

This is a version of my Raspberry Pi Pico MIDI Splitter that omits the MIDI sockets and instead provides a 5V UART TX style output for use directly with 5V microcontrollers. Update: Find the Build Guide here: Raspberry Pi Pico MIDI Splitter (TTL) - Part 2 Tutorials used in this project: Raspberry Pi Pico MIDI Channel Router … Continue reading Raspberry Pi Pico MIDI Splitter (TTL) →

Raspberry Pi Pico MIDI Splitter – Part 2

This is the build guide for my Raspberry Pi Pico MIDI Splitter. If you are new to microcontrollers, see the Getting Started pages. Bill of Materials Raspberry Pi Pico MIDI Splitter PCB (GitHub link below) Raspberry Pi Pico 1x H11L1 optoisolator 3x 74HCT14 (has to be the HCT version, not the HC version) 19x 220Ω resistors 1x … Continue reading Raspberry Pi Pico MIDI Splitter – Part 2 →

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 MIDI Splitter

Thinking ahead to the type of projects that might be useful for my Lo-Fi Orchestra in the future, one thing I wanted was some kind of MIDI distribution module. This project is based on the Raspberry Pi Pico Multi MIDI Router but has eight OUT ports connected to the Pico's PIO rather than four IN and … Continue reading Raspberry Pi Pico MIDI Splitter →

Raspberry Pi Pico MIDI Proto Expander

I am a bit fan of the Pimoroni Dual Expander module for the Raspberry Pi Pico. I've used it quite a lot with my Raspberry Pi Pico MIDI "pack" Interface for example. So I thought it might be nice to place my 3V3 MIDI Module onto a board following the same idea, giving space for a … Continue reading Raspberry Pi Pico MIDI Proto Expander →