You’ve doubtless seen those ubiquitous clock modules, especially when setting clocks for daylight savings time. You know the ...
The build relies on that old stalwart, the Arduino Uno, to run the show. It’s hooked up to a DS3231 real-time clock module so it can keep accurate time for long periods, as is befitting a clock.
The Arduino platform ... two wires to connect external devices. One wire (called serial data or SDA) is responsible for transferring data, while the other wire (serial clock or SLC) is used ...