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 →

Using a Cheap 5V MIDI Interface at 3V3

I had a query about using one of the common Arduino MIDI Shields with an ESP32 and when I looked into it, this is where I got to. 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 … Continue reading Using a Cheap 5V MIDI Interface at 3V3 →

Forbidden Planet “Krell” Display EuroRack Module

This project uses my Forbidden Planet “Krell” Display and the Forbidden Planet “Krell” Display PCB Design but with some slight variations that means it could be EuroRack mounted with a control voltage (CV) input. This is a DIY module only for use in my own DIY system. Do NOT use this alongside expensive modules in an … Continue reading Forbidden Planet “Krell” Display EuroRack Module →

Minimalist Lo-Fi Minimalism

Whilst I'm not an ardent fan of Philip Glass, (more like an amateur enthusiast), there are certain pieces of his that I do really quite like. The violin concerto goes without saying - some parts of that are wonderful. And I quite like the Low Symphony based on the music of David Bowie. But the … Continue reading Minimalist Lo-Fi Minimalism →

Forbidden Planet “Krell” Display PCB Build Guide

Here are the build notes for my Forbidden Planet “Krell” Display PCB. This post just looks at building the PCB for standalone use. Further posts will explore other uses for this PCB: Forbidden Planet “Krell” Display EuroRack Module Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for … Continue reading Forbidden Planet “Krell” Display PCB Build Guide →

Forbidden Planet “Krell” Display PCB Design

This is a PCB to support one of my dual Forbidden Planet “Krell” Displays. Rather than using ready made programmable LED rings, this is using through-hole APA-106 programmable RGB LEDs. Forbidden Planet “Krell” Display PCB Build Guide Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for any … Continue reading Forbidden Planet “Krell” Display PCB Design →

MiniDexed EuroRack PCB Build Guide

Here are the build notes for my MiniDexed EuroRack PCB Design. This is a DIY module only for use in my own DIY system. Do NOT use this alongside expensive modules in an expensive rack. It is highly likely to cause problems with your power supply and could even damage your other modules. Warning! I strongly … Continue reading MiniDexed EuroRack PCB Build Guide →

Waveshare Zero MIDI Proto PCB Build Guide

Here are the build notes for my Waveshare Zero MIDI Proto PCB Design. Warning! I strongly recommend using old or second hand equipment for your experiments. I am not responsible for any damage to expensive instruments! Bill of Materials Waveshare Zero MIDI Proto PCB (GitHub link below) 1x H11L1 optoisolator 1x 1N4148 or 1N914 signal diode … Continue reading Waveshare Zero MIDI Proto PCB Build Guide →

Waveshare Zero MIDI Proto PCB Design

In the spirit of several of the other microconroller prototyping MIDI boards I've already made, this is one for Waveshare Zero format boards. Waveshare Zero MIDI Proto PCB Build Guide 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 … Continue reading Waveshare Zero MIDI Proto PCB Design →