Clock with Arduino Nano module, RTC module DS3231 and matrix display with MAX7219

Web (czech): https://www.mylms.cz/text-arduino-hod...
GitHub: https://github.com/mylms/Arduino-Matr...

► Web: https://www.mylms.cz
► Instagram:   / mylms.petan  
► Please, support me on Patreon:   / petan