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 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 →

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 →

An Even Tempered Pico

I was having a bit of a discussion about tuning and temperament in music with Midi_in_out on Twitter, after they posted the latest update to their MIDISID project and we got on to talking about polyphony. I know the general theory behind natural harmonics vs the compromise that is the even tempered scale we use … Continue reading An Even Tempered Pico →

Raspberry Pi Pico Multi MIDI Router – Part 3

The obviously missing part of my Raspberry Pi Pico Multi MIDI Router is the use of USB MIDI. The Pico should support both USB host and device functionality, but I think you need to get into the C software development kit to do that properly, something I've not looked at yet. One of the easiest ways … Continue reading Raspberry Pi Pico Multi MIDI Router – Part 3 →

Raspberry Pi Pico Multi MIDI Router – Part 2

One thing I've wanted to do since building my Raspberry Pi Pico Multi MIDI Router is build a board a bit like ones DeftAudio produces for the Teensy. This posts describes a DIY version of a 4+2 IN, 4+2 OUT MIDI board for the Raspberry Pi Pico. Warning! I strongly recommend using old or second hand … Continue reading Raspberry Pi Pico Multi MIDI Router – Part 2 →

Raspberry Pi Pico Multi MIDI Router

In this project I've combined my Raspberry Pi Pico MIDI Channel Merger and my Raspberry Pi Pico MIDI Channel Router to create a more general 6-IN, 6-OUT MIDI routing device. This project uses the two hardware UARTs on a Raspberry Pi Pico along with four "PIO" UARTs to give the six MIDI IN and OUT ports. Part … Continue reading Raspberry Pi Pico Multi MIDI Router →

Raspberry Pi Pico MIDI Channel Merger

This is my second try at using the Raspberry Pi Pico Programmable Input Output (PIO) peripherals. My previous attempt was for a MIDI channel router. This time, I'm building a MIDI channel merger. The basic idea is to use the Raspberry Pi PIO to create 8 MIDI IN ports and merge them all into a … Continue reading Raspberry Pi Pico MIDI Channel Merger →

Raspberry Pi Pico MIDI Channel Router

Ever since I got hold of a Raspberry Pi Pico microcontroller I wanted to try out the Programmable Input Output (PIO) peripherals. I've also been on the lookout for microcontrollers with more serial ports than the usual one or two. The best I've found so far are ATmega2560 boards with four and the Teensy range … Continue reading Raspberry Pi Pico MIDI Channel Router →

Pi Pico PIO Poly Tone MIDI “Pack”

This is a simple "pack" design for the Pi Pico PIO Poly Tone Keyboard providing 8-note tone-style polyphony with MIDI in functionality. 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 … Continue reading Pi Pico PIO Poly Tone MIDI “Pack” →