I’m years late to the game, but in case you haven’t already got something like this, here’s some encouragement to build your own trigger to DIN-Sync adapter. It’s as simple or as fiddly as you want to make it and the results are worth it: using Silent Way’s Sync Plugin has allowed me to teach my old Roland dogs a new trick: swing.
DIN-Sync devices need a minimum of two command voltages (+ a ground reference) to work: a clock and a run command. See the Wikipedia entry on DIN-Sync for a picture of the relevant pins. How you connect these will depend on what you chose to build. You could use sockets, as I did, or, for example, cut the end off a DIN-Sync cable and solder jacks to the wires in question. Don’t forget to connect the ground between the two. Here are some close-ups from the adapter os from ES made.
The box I built has three outputs. These are just passive multiples. I use an old Expert Sleepers ES-3 which has no problems driving two instruments; I doubt a third will be a problem. As DIN-Sync expects 5V triggers, i.e., the sort of voltages our modulars generate, you could also run your 808 directly from an analogue source. Just bear in mind that your clock needs to be running considerably faster for things to work as expected, e.g., 24 pulses per quarter note.
