hey – thanks! Unfortunately my life got a lot busier after I wrote those blog posts, and sadly I haven’t managed to get around to eg writing up the fx engines, or adding some updates (since, in hindsight, I got a lot of things wrong and my opinion has changed as I’ve used the OP-1 more).
I did spend a month in 2017 mocking up some LFO/sequencer ideas for OP-1 which I posted about here: OP-1 mockup/prototype ideas: teaser pics (looks like the pics were lost, I’ll re-attach them to this post; I never got around to making videos of them, alas).
That lead to some pretty cool sound/music programming opportunities that I’m working on right now! (which sadly I can’t say anything about)
Anyway, cheers 
I’d love to update OP-101 eventually, but honestly at this point it’s about 10 projects down in my list of priorities, sorry ;-;
Raigan
p.s - thanks @Lymtronics for flagging this for me