Category: Project Categories

picoDexed + MiniDexed EuroRack

Since attempting my picoDexed + StackyPi + MiniDexed EuroRack build and failing, I've found another Pico-to-Zero board that is provided as open source, so I've had some made. This post details how to get that running with my MiniDexed Zero Eurorack module. Warning! I strongly recommend using old or second hand equipment for your experiments.  I … Continue reading picoDexed + MiniDexed EuroRack →

Duppa I2C MIDI Controller 3D Print Case

This is a simple 3D printed case for my Duppa I2C MIDI Controller PCB. https://makertube.net/w/nf7u1sYBRRzj2TUBRduQC2 Warning! I strongly recommend using old or second hand equipment for your experiments.  I am not responsible for any damage to expensive instruments! If you are new to microcontrollers, see the Getting Started pages. Parts list Duppa I2C MIDI Controller USB-C … Continue reading Duppa I2C MIDI Controller 3D Print Case →

Duppa I2C MIDI Controller PCB Build Guide

Here are the build notes for my Duppa I2C MIDI Controller PCB. Warning! I strongly recommend using old or second hand equipment for your experiments.  I am not responsible for any damage to expensive instruments!  If you are new to microcontrollers, see the Getting Started pages. Bill of Materials Duppa I2C MIDI Controller PCB (GitHub link … Continue reading Duppa I2C MIDI Controller PCB Build Guide →

Duppa I2C MIDI Controller PCB Design

This is the design for a simple carrier PCB for a Waveshare Zero format microcontroller and a Duppa small LED Ring. It is essentially a PCB version of Duppa I2C MIDI Controller – Part 4. Duppa I2C MIDI Controller PCB Build Guide Duppa I2C MIDI Controller 3D Print Case Warning! I strongly recommend using old or second hand … Continue reading Duppa I2C MIDI Controller PCB Design →

Diagnosing and attempting to fix a Yamaha DX100 – Part 3

At the end of part 1, I've established that the basics all seem ok (PCB, interconnections, power) and that basic digital logic stuff is happening. In part 2 I checked the ROM, reflowed a number of the solder joints, and started to look at the connectors between the main PCB and the LCD, but still with … Continue reading Diagnosing and attempting to fix a Yamaha DX100 – Part 3 →

picoDexed + StackyPi + MiniDexed EuroRack

Now that I have a picoDexed with a display an encoder it is very tempting to create a version of my MiniDexed EuroRack PCB for it. But as a short diversion, there is another possibility - can I use a RP2040 that is already in a Pi Zero form factor with my existing MiniDexed EuroRack … Continue reading picoDexed + StackyPi + MiniDexed EuroRack →

MT32-Pi on my EuroRack MiniDexed PCB

This is great. I was asked by Michel (mragutlich) if I knew how to build MT32-Pi to configure it for my MiniDexed EuroRack PCB but I don't and there isn't a lot of information apparently on how to build it from source. So I offered my Rebuilding my Ability to Build MiniDexed post which talks about … Continue reading MT32-Pi on my EuroRack MiniDexed PCB →