The guts and brain of the operation.
Testing the Midi input, audio output and trigger inputs. Getting familiar. Careful with those 3.3v triggers. The modular gate voltage is 10v, so the trigger input must be padded down.
10v gate triggers need to be scaled down to <3.3v so as not to damage the Tsunami board. I'll be using a transistor as a basic gate controlled switch with the pull-ups enabled on the Tsunami. This means that IF gate = 10v @ base of 2n222 xtror, then the current is enabled to flow between Tsunami pin to ground, which will result in a trigger to the drum sampler features. Each drum trigger gate will require a separate xtor circuit to protect the Tsunami board.
View PDF
View PDF
PCB design. Here I've simply duplicated the schematic x 16 trigger junctions.
PCB circuit trace. The same can be achieved using only 1 x 47k resistor on the gate input to the base of the transistor. So I'll be leaving the extra two resistor terminals unpopulated.
View PDF
View PDF
for all those triggers. I'll use jumper wires between the Tsunami board and on all these 16 sets of standoffs x4.
gLike
Tsunami - Sampler Module
Sampler module for modular synth. For use with midi input keyboard sampler or can be triggered via +10 v gate signals provided by external modules. Great for use as drum sampler module. Also a nice noise source for rain, thunder, insects or whatever.
View Website