I want to make a circuit to do something that is relatively simple but I need to find the optimal way to do it in order to take as little current as possible. Here is what I want to do:
When a trigger is activated, it launches a cycle. A cycle is:
1 second "on" (let's say it closes a relay)
1.5 second "off" (opens the relay)
1 second "on" (closes the relay)
- Turn "off" and then wait for the event to initiated the circuit to happen again. (relay is open).
The time "on" for step 1 and 3 needs to be the same but they are not necessarily the same as in step 2. The trigger that activates the circuit will probably be a short pulse. I thought about using one or two 555 timers and counters but I am not sure exactly how and not sure if that is the best way.. What would be the best way to do something like that to use as little current as possible? The circuit will run with batteries(4*AA or one 9V)...