Archive of the former Yahoo!Groups mailing list: Modular Synth Panels

I just built a dual trigger delay. I had previously uploaded the
front panel design to the DJB folder. It works great and provides a
5 mS output trigger which is delayed 100mS to 10 seconds from the
input trigger.

One of the side affects I had found earlier on the MOTM-800 is that
with a valid gate and no trigger it starts the decay-sustain cycle.
My ARP keyboard has a 15 mS delay for the trigger conditioning
circuit and this was enough on certain settings to 'pre-charge' the
circuit so the attack was abreviated since it was starting from the
sustain level. I ended up modifying the Arp keyboard.

However, this also happens with the trigger delay so I came up with a
pretty simple mod for the MOTM-800 to hold off the circuit to wait
for a trigger input to begin the attack phase from 0 volts. This
eliminates the mode of providing a sustain level output with no
trigger or gate so I added a toggle switch located between the
release and sustain knob to switch between 'normal' and 'wait for
trigger' mode. Works great.

Let me know if anyone is interested and I can post photos and
describe the circuit.

Dave