XIAO SAMD21, Arduino and MIDI

I've had a few Seeedstudio XIAO SAMD21 boards (previously known as the Seeeduino XIAO) for a while but haven't really done much with them. I had a brief go with Circuitpython to build a CircuitPython USB to Serial MIDI Router but that is all so far. Having been inspired by a recent post on the … Continue reading XIAO SAMD21, Arduino and MIDI →

MiniDexed Raspberry Pi IO Board – Part 2

This is the set of build notes for the smaller of my MiniDexed Raspberry Pi IO Boards. Update: There is a newer version of this board: MiniDexed Raspberry Pi IO Board V2 Design. Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for any damage to expensive instruments! These … Continue reading MiniDexed Raspberry Pi IO Board – Part 2 →

MiniDexed Raspberry Pi IO Board

I've been toying with the idea of some kind of IO board for my MiniDexed experiments for use with a Raspberry Pi. I initially wanted something fully self-contained - i.e. just pop it on a Raspberry Pi and you're good to go. But then it was pointed out that having all the IO connections on … Continue reading MiniDexed Raspberry Pi IO Board →

Universal Synthesizer Panel – Part 5

This is the fifth part in a series of posts describing how I've approached building a "universal synthesizer panel" to house a range of microcontroller synthesis projects. In the first part, I detailed the general idea and overall design of the panel. In part 2 I built the IO panel. In part 3 I built … Continue reading Universal Synthesizer Panel – Part 5 →

OLED MIDI Display – Part 2

As I mentioned in my previous post, it should be possible to connect multiple displays to the same microcontroller. This projects looks into that in a bit more detail. Spoiler - it almost works, but has software limitations! Read on for details. Warning! I strongly recommend using an old or second hand keyboard for your MIDI … Continue reading OLED MIDI Display – Part 2 →