I am logging data from 4 pressure transducers. The for loops are being used to toggle on and off a valve, which is connected to pin 2, while the data is being logged. The words "low" and "high" are being logged to the sd card to help me know if the valve was on or off when the data was logged. I am also printing at what time the data was logged, for instance:
low Runtime00:00:01 PT1A: 706; PTT1: 944; PT1B: 760; PT1C: 926
Pin 3 is being used to start the data logger. I have found if there is now power on the pin during initial start up, when power is applied the data logger will log that data from that clock time in the arduino. I require the data to be logged with a starting time of 00:00:00 when power is applied to pin 3.