I am looking to create a timer that will trigger a 555 timer for an automated greaser. I want to be able to program the timer for either 48 hours or 72 hours. I read the previous thread using a 4060 binary ripple counter and I was wondering how to set up a binary counter to trigger at 48 and 72 hours. I am going to activate a transistor with the 555 timer which will activate a 24v pneumatic solenoid.