So, I feel like I'm resurrecting an old thread here, but really I have been quite actively working on this one 😊
So I have what is now Revision 3 of the wavetable board. Admittedly, I am starting to become less convinced that a wavetable card is really the way to go, as it might not be practical for most users as opposed to a standalone-only device. This standalone "host" is obviously designed to accept the wavetable card and turn it into standalone unit, but it is also designed to be able to accept other "generic" wavetable cards and turn them into a standalone unit... yes, very similar to dreamblaster's WaveBlaster Module MIDI Interface Board, but from a "generic" perspective this board also has midi out and thru, and has a USB MIDI interface (auto switches the input to the wavetable card from the MIDI 1.0 ports to the USB MIDI when USB is plugged in). That said, my testing will be limited to ensuring the "MB-32" wavetable card works with it.
I changed to surface mount components for the ICs... mostly because it seemed to be practical to get Atmel microcontrollers with the features and pin count that I want that only come in surface mount packages, so I said screw it, and chose surface mount packages for the other ICs as well.
I'm pretty committed to this design now, and actually have all of the components ordered and received to build it... just waiting on the PCBs now...