I am looking for a type of digital watch where hours and minutes would show as binary, e.g. with an LED on for a 1 and off for a 0. So 12:30 would show as:
12 = 1*8 + 1*4 + 0*2 + 0, and
30 = 0*32 + 1*16 + 1*8 + 1*4 + 1*2 + 0*1). With lights, it would give:
** : ****
It would both be fun and useful training for finding patterns and reading in binary. Ideally it would switch from endian-ness, big or little.
I have found items advertised as "binary digital watch" which have an LED next to an hour or a minute, but I want a watch only in binary.
I imagine it would be feasible with a microcontroller like a microbit or Arduino Nano and addressable LEDs.
Does it already exist, or has anyone built something similar?