ceas NTP pe afisaj led din 7-segmente multiplexat
materialele de inspiratie au fost cele de la http://www.valvewizard.co.uk/iv18cloc... si https://thesolaruniverse.wordpress.co...
articol cu detalii: https://nicuflorica.blogspot.com/2021...
sketch: https://github.com/tehniq3/NTPclock_7...