I'm thinking about building a simple electronic watch in my spare time.
Not a lot of functions, no LCD, just keeping time and displaying the time using LEDs.
However, I have never created a time-keeping circuit so I'm wondering if using a µC's internal clock is enough to keep track of time or do I need something else?
I have seen some people using 32.xxkHz for time-keeping. Why do people choose this particular value (maybe it's just coincidence I came across a few projects using that value).
Links to projects are always welcome.