I'm a newbie, but I'm trying to make something that I might market -- so I want the cost per unit to be somewhat lowThe requirements of my clocksuper simple -- does not need to keep time accuratesetting the time should be super basic, as in plugging the thing in at 12pm exactlydoes not need to keep track of minutes, only increments of .25 hoursI read that you can build a clock that keeps time based off the frequency of American AC power (60Hz) http://bit.ly/2UUzwoi would I go about manufacturing a circuit like this? Are there any advantages via /r/DIY http://bit.ly/2KyIK5n
