Thirty years ago when I was in the same position as Eng444, at University working on projects for my Bsc in Civil Engineering, I used a stop watch.

A mechanical one at that.

I am realy intrigued as to why any one has gone to so much trouble to re invent the wheel, or egg timer in this case.

I work in instrumentation and RTC are used extensively because we need to log data with a time and date stamp, and if I was going to build a data logger then I would use a RTC, but then I would not build one because I can buy a very good tested and reliable datalogger for £240.

Puzzled

Steve