Merge pull request 'Make sure RTC is counting time on battery' (#51) from rtc-fix01 into main

Reviewed-on: #51

vulpes/src/main.cpp

@@ -279,8 +279,11 @@ void setup() {
     //rtc.adjust(DateTime(2023, 9, 2, 17, 32, 0));
   }
 
-  // Report the RTC time
-  Serial.print("RTC time on startup: ");
+  // Report the RTC time after waiting two seconds
+  // https://amiok.net/gitea/W1CDN/vulpes/issues/50#issuecomment-1376
+  Serial.println("Wait 2s for RTC");
+  delay(2000); 
+  Serial.println("RTC time on startup: ");
   Serial.println(rtc.now().unixtime());
   Serial.println(rtc.now().timestamp());