Category: Advanced

Arduino EEPROM Reader PCB Design

This is a PCB version of the Arduino EEPROM Reader/Writer as described here: https://github.com/beneater/eeprom-programmer but with slight adjustments to support reading of 27Cxxx style ROMs often found in vintage equipment. Build Guide here: Arduino EEPROM Reader PCB Build Guide. Update: Since developing this board, I've found a much more comprehensive DIY board here: https://github.com/TomNisbet/TommyPROM. The documentation … Continue reading Arduino EEPROM Reader PCB Design →

Building my Oskitone Poly555

This isn't really a post like my usual blog posts. This isn't a project of mine as such or a build guide or anything. It is simply a few comments and photos of my building my Oskitone Poly555. https://makertube.net/w/a8SsXP33nymrRqNxXnbbNA I've always liked the idea of the Oskitone. I've used it as the inspiration for some of my … Continue reading Building my Oskitone Poly555 →

Raspberry Pi Pico Synth_Dexed? – Part 2

Now that the initial elation at getting a reasonable sounding, er, sound from my Raspberry Pi Pico Synth_Dexed has worn off, I've been seeing what I can do about the performance. TL;DR: this is all analysis and measurements, working out and attempting to understand how it all currently works. I haven't fixed anything or improved it yet. I'm … Continue reading Raspberry Pi Pico Synth_Dexed? – Part 2 →

Diagnosing and attempting to fix a Yamaha DX100 – Part 1

I was very lucky to be offered a non-working Yamaha DX100 from Simon Walters. On arrival I can see it attempts to boot but apart from the odd character on the screen, I wasn't really getting anything useful happening. My thinking here is that as it is a pretty nice synth with most of its functionality … Continue reading Diagnosing and attempting to fix a Yamaha DX100 – Part 1 →

RPi 400 MIDI and Audio PCB Build Guide

Here are the build notes for my RPi 400 MIDI and Audio PCB. https://makertube.net/w/tMyv2KC5D9zFLqs32MEjQa Warning! I strongly recommend using old or second hand equipment for your experiments.  I am not responsible for any damage to expensive instruments! In this case - inserting this pcb incorrectly (which unfortunately is possible with the RPi-400) could damage the … Continue reading RPi 400 MIDI and Audio PCB Build Guide →

Raspberry Pi Zero MIDI PCB Build Guide

Here are the build notes for my Raspberry Pi Zero MIDI 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 and single board computers, see the Getting Started pages. Bill of Materials Raspberry Pi Zero … Continue reading Raspberry Pi Zero MIDI PCB Build Guide →

RPi Zero MiniDexed IO Board PCB Build Guide

Here are the build notes for my RPi Zero MiniDexed IO Board 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 and single board computers, see the Getting Started pages. Bill of Materials RPi Zero … Continue reading RPi Zero MiniDexed IO Board PCB Build Guide →