Schematics and a guide on muffwiggler.com and doepfer.de for nifty 5v gate -> S-trigger converter, which might work on the Boss RC-30 tap tempo (and any other Boss pedal with a tap-tempo). I’m tempted to try this even tough I’m not using my RC-30 as much. Here is a better plan Slacker’s midi clock metronome PLUS tap trigger (S-trigger is not for switch toggle action!). After a furious night of internet search I learned of the Thomas Henry Trigger-to-Switch Project, which uses a 5 VDC dpdt dip relay relay to convert a +5v (5ms) into a switch toggle action. Also considering making a Panasonic/Lumix camera remote using these schematics. Bought a new cheep multimeter.