110 modifications
You have to start somewhere!
Two things to keep in mind:
1) I don’t always know what I’m talking about (!)
2) I don’t have a DR-110
but, judging from this:
http://www.cykong.com/Synths/Boss DR-110/Images/Boss DR-110 Schematics b Voice.gif
it wouldn’t be too hard at all to make individual outs for BD, SD and Clap, I can’t tell where you could pick up the individual HH and Cy signals. The dead easiest to do would to put a switching jacks in for SD, BD and all the HH/SY together.
For the SD you’d need to find a place to cut a trace that is between between the nexus of R71/R85/C36 and the Balance pot. The switching jack would be wired to complete the cut trace when closed (tip to the R71/R85/C36 nexus, normal to the pot.)
For the BD do the same between the balance pot and a point common to R86/C46.
HH/CY are on the other side of the balance pot, put the switching jack between the pot & a common point of R88/R89.
Use 1/8” jacks since the 110 is so tiny. When the jacks are in use the sounds would dissapear from the mix out.
Trigger I/O might be harder, maybe the 110 uses 6V lines that go to 0V when triggered. The clap has 3 quick triggers and one other (decay?) which would be hard to replicate or use externally anyway.
This is all fascinating theory, but I could be way wrong. You might be better off continuing to make music instead of being an armchair technician like myself.
din sync would be nice, for sure, but i’d rather just have the individual + trigger outs. and maybe tuning and decay 