There are two events I plan to log; using no switches or requiring manual input of some kind. One of the events is whenever the Arduino Serial Monitor is opened; the other, is when external event occurs that causes a Arduino RESET. Second event produces a LOW pulse used to CLK the J-K Flip-flop. digitalRead of J-K Flip-flop Q; using a conditional statement, if Q = HIGH log to SD Card as event1 date/time stamp else log to SD Card as event2 date/time stamp. I need the J-K Output Q to be STORED thru the Arduino RESET, so Q can be read.
After reading Q, will need to clear Q; plan to do this from running sketch with a DigitalWrite
74HC73 is the chip I plan to use; it is triggered with a negative going CLK.
What needs to happen with the J and K inputs? Will this work in toggle mode; with both J and K tried to +5 volts?