Like many of projects, this one requires a number of libraries- four in fact, although three of them are included with the Arduino IDE. The RTCLib library can be ...

* v.1 - some changes: https://forum.arduino.cc/t/control-4-relays-to-turn-on-for-a-few-seconds-a-day-and-then-turn-off/1112044/15 * v.1a - Nicu FLORICA (niq_ro ...