Iec 157-1

[Valiant Puga]

A157 is a trigger sequencer subsystem that isused to generate up to eight trigger signals controlled by a 8x16 LED/buttonmatrix (some customers call it "Miniature Schaltwerk" as it is basedon the same matrix as the no longer available Schaltwerk).The system is still in the prototype state. Consequently the specifications onthis page are still preliminary !Thesubsystem will probably contain several modules: the LED/button matrix module A-157-1 the trigger output module A-157-2 one of the control modules (A-157-3, A-157-4 ...)The LED/button matrix module A-157-1 is the coreof the subsystem. It is used to set or reset the trigger event on each of the 16steps of each of the 8 rows.

The trigger output module A-157-2 outputs the 8 trigger signals and has an LEDdisplay for each trigger. We will probably add a mute button or mute switch foreach row that allows to turn the trigger output off/on independent for each row.

In the final version the modules A-157-1 and A-157-2 will be probably mergedinto one module only because both modules are essential for the subsystem.Themodule A-157-1/2 (or the merged module that will contain both units) can beconnected to a simple control module or a more sophisticated control modulewhich is planned for the future (similar to the A-155 andA-154 conceptual design where the A-155 includes a simplecontrol unit that can be replaced by the A-154 whichoffers a lot of additional functions).Atthe beginning a simple control module A-157-3 similar to the A-155 control unitwill be available. It offers only the functions clock, start/stop and reset(both with manual controls and control inputs). For this standard control unitthe tempo (clock) is the same for all 8 rows, the direction is forward and thelength of each row is 16.We also plan amore complex control module A-157-4 that allows additional functions like 128memories for trigger sequences, different clock/start/stop/reset for 2 or 4groups of rows (e.g. common for rows 1-4 and 5-8, or in pairs), independentfirst/last step for each row, independent direction(forward/backward/pendulum/random) for each row, one-shot mode, LC display andso on. But these ideas are very preliminary and we will have to find out whichfunctions are essential.There are alsoplans for a stand-alone version adapted to the design of DarkEnergy and Dark Time with the same casedimensions and wooden side panels (provisional name "Dark Flow")Latestnews (as of July 2014):Based upon suggestions of customers thematrix board has been completely redesigned. The functions MUTE, SELECT, SHIFTLEFT, SHIFT RIGHT and INVERT ROW (when shift left and right are operatedsimultaneously) have been added for each row. This requires also a redesign ofthe processor board to support the new functions. Therefore the planned releasedate has to be postponed (without any obligation).Latestnews (as of May 2015):

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