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A project log for OPL Studio - OPL2 / OPL3 MIDI Interface

a MIDI interface for the OPL2 Audio Board and OPL3 Duo!

maarten-janssenMaarten Janssen 02/27/2022 at 19:490 Comments

The big update for this week is that I made a really nice looking enclosure for OPL Studio (if I do say so myself). I had the plans to make an enclosure for OPL Studio ever since I started working on the first set of prototype PCBs last year. The 3D printer I had at the time, however, wasn't reliable enough to print even a simple object. Since a month or so I have a new Prusa Mini which enables me to finally get started on the enclosure. So sately I have spend many of my after work hours learning FreeCAD and getting familiar with my new 3D printer and now it's paying off!

The enclosure for OPL Studio is a bezel printed in one piece where the top and bottom PCBs are screwed in to. So no need anymore for spacers between the boards. Of course there are the cutouts in the back for buttons and connectors.

On The Software Side Of Things

Software wise there are some small updates since last week. Some cleanup of old code and some improvements for melody sequences. When the melody sequencer is active it will now also listen to MIDI volume and panning changes and apply the change to the sequence that's being edited or all sequences that are assigned to the MIDI channel where the change happened. Whether the update happens only on the sequence being edited or all sequences listening to the MIDI channel is configurable in the MIDI settings.

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