// Callback timer_cb_t oneSecondTimer(void* data) { Serial.println("Fired!"); } Timer timer(1000, false, oneSecondTimer); void setup() { Serial.begin(115200); // Slow ...

* 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 ...

A small portable device featuring timer, clock, and calendar functions, equipped with a simple and functional interface and a truly long battery life.