Currently I have something like this set up: B-R-R-R-C-R-R-R-C-R-R-R-C (etc...)
B stands for a redstone block, R stands for a repeater, and C stands for a command block.
I have a line like this (curling back once in a while, but not a loop) up to a minute -- but this method uses 120 repeaters at full delay. What circuit could I use to create something that behaves AS CLOSE AS POSSIBLE to what I have now, but taking up less space? Specifically:
1) Removing the redstone block power source won't stop the already-sent signal 2) Must have room for gradual command blocks (so at 20 seconds I could have a command block, at 30, at 35, etc...)
For specifics, this is my Deathmatch system in a vanilla Survival Games map. When the minute is over, it reaches command blocks which teleport everyone to one location. The admin in the match uses a command button in a /tellraw command to start the countdown for Deathmatch when (s)he deems it appropriate - this command sets a redstone block as the input. After it is placed, it remains placed for the rest of the game -- but I want to be able to destroy it while not stopping the minute countdown for debugging purposes. And, as it's a countdown, it needs to be able to send out a signal every second to command blocks for stuff like "15 more seconds until Deathmatch!"
Summary: I am looking for a delay as opposed to a timer. I do not want a signal that loops and am not looking for a necessarily long delay, I just want an accurate delay that is more efficient than using repeaters AND can support gradual output (IE at half delay an output, at three quarters, etc...) Hooking a timer up to an AND gate with the input won't work as far as I know (if you know a way please tell) because if the timer was half-passed when the input was given, then the "delay" would be half the intended time. And removing the input signal should NOT stop the delay from continuing. It also needs to be silent, as it is close to the surface, and non-laggy (no super-quick repeater loops).
I am asking for a very specific redstone circuit, I know.