Stopwatch based on cell value|VBA & Macros|Excel Forum|My Online Training Hub

Hello all,

I am looking for a way to create a stopwatch that monitors the value of cell "N13" and runs until the value becomes "0". Then starts up again once the value of that cell becomes anything greater than "0". Basically, this cell is an indicator of how many items are currently being processed by a machine throughout the day. I would like to be able to monitor the actual amount of time that machine is processing items in a given day. I am unable to post it here unfortunately. I would like the stopwatch value to read into cell "U4". Is this possible or has it been done to where I can use the code with my modifications?