to make the 555 work as rf A...
you can run the wire that would go to the tranistor then trigger...
to a tactile then to one of the contacts for A(not sure which contact.....)
it works on cg pads not matrix....
yo get som crazy stuff happen on matrix pads lol
i did somthing similar ...
well with B and hazers gameplayrf code...
here's the thread if your interested....
https://www.acidmods.com/forum/index.php?topic=33014.0