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Using DS3231 RTC to move Servo Arm at specific time
First time arduino user here. I'm trying to program it to move a servo arm at a specific time of the day. I did some troubleshooting and it doesn't like the line DateTime now = rtc.now() line for some reason.
#include <Wire.h>
#include "RTClib.h"
#include <Servo.h>
RTC_DS3231 rtc;
Servo myServo;
int pos = 0;
// Set your target execution time here (24-hour format)
const int targetHour = 20; // 2 PM
const int targetMinute = 55; // 30 minutes
bool adjustedToday = false;
void setup() {
Serial.begin(9600);
myServo.attach(9);
myServo.write(0); // Default startup position
}
void loop() {
DateTime now = rtc.now(); // Get current time data
//Check if current time matches the target hour and minute
if (now.hour() == targetHour && now.minute() == targetMinute) {
if (!adjustedToday) {
myServo.write(90); // Move servo to 90 degrees
delay(2000); // Wait for 2 seconds
myServo.write(0); // Return to 0 degrees
adjustedToday = true; // Mark done so it doesn't loop continuously during that minute
}
}
// Reset the trigger flag at midnight so it can run again the next day
if (now.hour() == 0 && now.minute() == 0) {
adjustedToday = false;
delay(1000); // Polling delay to reduce processor load
}
}
I used this code to set the time on the RTC
#include <Wire.h>
#include "RTClib.h"
RTC_DS3231 rtc;
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
Wire.begin();
// Set RTC using the compile time
rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
}
void loop() {}
u/TemporarySyrup3728 — 3 days ago
