Toy Keyboard Tone Piano – Part 3

This post looks in a little more detail at the keyboard matrix decoding for the toy keyboard to see what is possible with less IO pins. Part 1 provides all the details for adding an Arduino to the original toy keyboard. Part 2 demonstrates the toy keyboard running the Oskitone "Scout" firmware. Warning! I strongly … Continue reading Toy Keyboard Tone Piano – Part 3 →

Toy Keyboard Tone Piano – Part 2

Having now plugged an Arduino into my Toy Keyboard, it is time to start experimenting. The first thing I really wanted to do, was build an Oskitone Scout, but not having a 3D printer or the funds to purchase one, I thought I'd have a go at getting the code to run on my toy … Continue reading Toy Keyboard Tone Piano – Part 2 →

Toy Keyboard Tone Piano

I have a few old toy keyboards kicking around that I've wanted to put an Arduino in, so I finally pulled one apart and had a go. I was "live tweeting" it as I went in this Twitter thread, but thought I'd gather everything so far together into a single post. Further posts in this … Continue reading Toy Keyboard Tone Piano →

Arduino RF24 MIDI Interface – Part 2

Having got the basics of "wireless MIDI" working with my nRF24L01 radios, I wanted to take advantage of the inherent "broadcast" nature of radio and see if I could transmit to a number of receivers at the same time. It turned out to be quite a bit more involved than I was expecting! But I … Continue reading Arduino RF24 MIDI Interface – Part 2 →

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 →

Arduino RF24 MIDI Interface

One thing I've wanted to try is wireless MIDI. I know you can get MIDI over Bluetooth (there are some rather neat commercial "wireless 5-pin MIDI" adaptors you can buy) and I believe people have used MIDI over Wi-Fi by using ipMIDI ("MIDI over Internet Protocol"). But I've had some cheap nrf24L01 radios for a … Continue reading Arduino RF24 MIDI Interface →

Raspberry Pi Pico I2C MIDI Interface – Part 4

For this final (for now) part of my experimenting with my Raspberry Pi Pico I2C MIDI Interface, I've set it up to talk to multiple Arduino's, each with a speaker to act as an I2C MIDI "tone module". In part 1, I tested the concept of a Pico I2C MIDI interface. In part 2, I … Continue reading Raspberry Pi Pico I2C MIDI Interface – Part 4 →

Raspberry Pi Pico I2C MIDI Interface – Part 3

Continuing my experiments with my Raspberry Pi Pico I2C MIDI Interface, one comment on Twitter asked about latency, so I thought I'd try to see if it was possible to measure how long it took for a complete round trip of a MIDI message from an Arduino through the Pico, back out over I2C to … Continue reading Raspberry Pi Pico I2C MIDI Interface – Part 3 →

Raspberry Pi Pico I2C MIDI Interface – Part 2

Following on from Raspberry Pi Pico I2C MIDI Interface this post looks at how to use the I2C MIDI layer with the Adafruit MIDI library for CircuitPython. 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 … Continue reading Raspberry Pi Pico I2C MIDI Interface – Part 2 →

Raspberry Pi Pico I2C MIDI Interface

I thought it was time to see if I could add a Raspberry Pi Pico to my Arduino I2C MIDI setup. This is the first step to getting them talking MIDI over I2C using Circuitpython. In part 1, I'm testing the concept of a Pico I2C MIDI interface. In part 2, I wrote an I2C MIDI “driver” … Continue reading Raspberry Pi Pico I2C MIDI Interface →