So i have a machine.... OF DOOM.... that fires lava arrows and stuff using one of the rapid redstone triggers

R =redstone B= block T=torch A=Air Layer one TRT BRB TRT

Layer two AAA RAR AAA

(Its quite simple and crap) and has a bedrock shell so players cant break it and all.... but i wanna paste it from we..... but i can think of a good triiger I could use that would cause it to trigger.... the best i could thing of is by having an actual hole in the thing and have a preactived piston push a block or something.....at this point though i am so confuaed what to do 3x

EDIT: testing around with observer blocks and discovered an observer on a daylight sensor will trigger if u paste it!! Perfect so i can load it as needed!!!