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DS1307.ino

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+#include <Wire.h>
+#include <RTClib.h>
+
+RTC_DS1307 rtc;
+
+const int relay = A3;
+bool on = LOW;
+bool off = HIGH;
+
+void setup() {
+  Serial.begin(9600);
+
+  if (!rtc.begin()) {
+    Serial.println("Couldn't find RTC");
+    while (1);
+  }
+
+  if (!rtc.isrunning()) {
+    Serial.println("RTC is not running, setting the time!");
+    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
+  }
+
+  pinMode(relay, OUTPUT);
+  digitalWrite(relay, off);
+}
+
+void loop() {
+  DateTime now = rtc.now();
+  int currentHour = now.hour();
+  int currentMinute = now.minute();
+  int currentSecond = now.second();
+
+  Serial.print("Current time: ");
+  Serial.println(now.timestamp());
+
+  if (currentHour == 17 && currentMinute == 40 && currentSecond == 0) {
+    digitalWrite(relay, on);
+    delay(1000); // Delay to ensure the relay is toggled only once
+  }
+  if (currentHour == 6 && currentMinute == 0 && currentSecond == 0) {
+    digitalWrite(relay, off);
+    delay(1000); // Delay to ensure the relay is toggled only once
+  }
+
+  delay(1000);
+}

DS3231.ino

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+#include <Wire.h>
+#include <RTClib.h>
+
+RTC_DS3231 rtc;
+
+const int relay = A3;
+bool on = LOW;
+bool off = HIGH;
+
+void setup() {
+  Serial.begin(9600);
+
+  if (!rtc.begin()) {
+    Serial.println("Couldn't find RTC");
+    while (1);
+  }
+
+  if (rtc.lostPower()) {
+    Serial.println("RTC lost power, setting the time!");
+    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
+  }
+
+  pinMode(relay, OUTPUT);
+  digitalWrite(relay, off);
+}
+
+void loop() {
+  DateTime now = rtc.now();
+  int currentHour = now.hour();
+  int currentMinute = now.minute();
+  int currentSecond = now.second();
+
+  Serial.print("Current time: ");
+  Serial.println(now.timestamp());
+
+  if (currentHour == 17 && currentMinute == 40 && currentSecond == 0) {
+    digitalWrite(relay, on);
+    delay(1000); // Delay to ensure the relay is toggled only once
+  }
+  if (currentHour == 6 && currentMinute == 0 && currentSecond == 0) {
+    digitalWrite(relay, off);
+    delay(1000); // Delay to ensure the relay is toggled only once
+  }
+
+  delay(1000);
+}