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.

Emory rolls out digital 'clock-drawing test' to detect Alzheimer's, other types of dementia. A test that would usually take 30 to 40 minutes can now be done in 5 to 10 minutes digitally.