Having now done both MIDI In and MIDI Out for the Raspberry Pi Pico, and having seen the Adafruit MIDI Feather Wing and the design for "packs" ("shields" in Arduino speak or "wings" in Adafruit Feather speak) from Pimoroni, I wanted a convenient equivalent for my MIDI In and Out and this is the result. … Continue reading Raspberry Pi Pico MIDI “pack” Interface
Tag: midi
AD9833 MIDI Poly Signal Generator
Here are the details of how I added MIDI to my six-way AD9833 Poly Signal Generator shield building on the code that enabled the pots and switches from AD9833 Poly Signal Generator – Part 2. https://youtu.be/gnYn5I3gP9I Warning! I strongly recommend using an old or second hand equipment for your experiments. I am not responsible for any … Continue reading AD9833 MIDI Poly Signal Generator
Pi Pico PIO Poly Tone MIDI Keyboard
Following on from the Pi Pico PIO Poly Tone Keyboard here it is combined with one of the DIY MIDI Interfaces to give an eight note polyphonic MIDI tone module based on the Raspberry Pi Pico. In a follow-up post I develop a "pack" MIDI interface. https://youtu.be/uscUlgJ-NBk Warning! I strongly recommend using old or second hand equipment … Continue reading Pi Pico PIO Poly Tone MIDI Keyboard
MIDI In for 3.3V Microcontrollers
I have a number of microcontrollers now that use 3.3V logic: Raspberry Pi Pico Adafruit Feather Adafruit Circuit Playground Express BBC Micro:bit So far, I've look at MIDI OUT functionality, so now its time to look at MIDI IN, based on the circuit from my Simple MIDI Monitor. This project shows how to build your … Continue reading MIDI In for 3.3V Microcontrollers
Arduino Tone Polyphony – Part 3
Having achieved my full 12-note polyphony both over MIDI and using built-in keyboard encoding, the last part of this experiment was to see what range was possible using this method for tones. This project manages four octaves with 12-note polyphony and tuning that, whilst isn't perfect, isn't too bad either. https://youtu.be/Vf4GcZHLVJQ Warning! I strongly recommend … Continue reading Arduino Tone Polyphony – Part 3
Pi Pico MIDI Matrix Decode – Part 4
I'd left the Pi Pico MIDI Matrix Decode project essentially working but with a ghosting multiple keypresses problem. I was just going to let it go, but then I decided I just couldn't leave it there, so I had to take another look. Warning! I strongly recommend using old or second hand equipment for your experiments. … Continue reading Pi Pico MIDI Matrix Decode – Part 4
Single Pin MIDI Channel Selector – Part 2
As I mentioned in the Single Pin MIDI Channel Selector it would be nice to use a "DIP switch" on a small circuit board to give me my MIDI channel selection switch. Here is a small board that can plug directly into an Arduino's headers. Warning! I strongly recommend using old or second hand equipment for … Continue reading Single Pin MIDI Channel Selector – Part 2
Pi Pico MIDI Matrix Decode – Part 3
Expanding on the Pi Pico MIDI Matrix Decode project to create a basic four octave keyboard. There are some limitations with this approach though, so be sure to read on before trying to build one yourself (or skip over to Part 4 to read about the solution). https://youtu.be/Wc3dhsPsm0w Warning! I strongly recommend using old or … Continue reading Pi Pico MIDI Matrix Decode – Part 3
Pi Pico MIDI Matrix Decode – Part 2
This is taking the solderless breadboard "keyboard" from my Pi Pico MIDI Matrix Decode project and committing it to stripboard. In part 3 I expand it to four octaves. 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 … Continue reading Pi Pico MIDI Matrix Decode – Part 2
Single Pin MIDI Channel Selector
One thing that has been missing from all of my MIDI projects so far is some means of configuring the MIDI channel without having to reload code. There are a number of approaches, but I wanted one that used the minimal amount of IO. This documents one option. In part 2 I build this into … Continue reading Single Pin MIDI Channel Selector