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In questo video scoprirai come misurare il tempo nei progetti con Arduino tramite il modulo RTC (Real Time clock).
Vedremo quali sono i collegamenti da fare e come scrivere lo sketch per visualizzare e modificare la data e l'ora sul display LCD
Inoltre imparerai come sfruttare gli allarmi messo a disposizione dal modulo per realizzare delle sveglie personalizzate.
#include <LiquidCrystal_I2C.h>#include <RTClib.h> RTC_DS3231 rtc;LiquidCrystal_I2C lcd(0x27, 16, 2); void setup () { rtc.begin(); if (rtc.lostPower()) { rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); } lcd.init(); lcd.backlight(); lcd.clear();} void loop () { DateTime now = rtc.now(); printDateTime(now); delay(1000);} void printDateTime(DateTime dt) { char dateBuffer[] = " DD/MM/YYYY "; char timeBuffer[] = " hh:mm:ss "; lcd.setCursor(0, 0); lcd.print(dt.toString(dateBuffer)); lcd.setCursor(0, 1); lcd.print(dt.toString(timeBuffer));}#include <LiquidCrystal_I2C.h>#include <RTClib.h> RTC_DS3231 rtc;LiquidCrystal_I2C lcd(0x27, 16, 2); void setup () { Serial.begin(9600); rtc.begin(); if (rtc.lostPower()) { rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); } lcd.init(); lcd.backlight(); lcd.clear();} void loop () { if (Serial.available()) { String buffer = Serial.readStringUntil('\n'); setDateTime(buffer); } DateTime now = rtc.now(); printDateTime(now); delay(1000);} void printDateTime(DateTime dt) { char dateBuffer[] = " DD/MM/YYYY "; char timeBuffer[] = " hh:mm:ss "; lcd.setCursor(0, 0); lcd.print(dt.toString(dateBuffer)); lcd.setCursor(0, 1); lcd.print(dt.toString(timeBuffer));} void setDateTime(String value) { int d, m, y, h, min, s; int n = sscanf(value.c_str(), "%d %d %d %d %d %d", &d, &m, &y, &h, &min, &s); if (n == 6) { rtc.adjust(DateTime(y, m, d, h, min, s)); }}
#include <LiquidCrystal_I2C.h>#include "RTClib.h" #define LED_PIN 7#define BUZZER_PIN 8 RTC_DS3231 rtc;LiquidCrystal_I2C lcd(0x27, 16, 2); void setup () { Serial.begin(9600); rtc.begin(); if (rtc.lostPower()) { rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); } lcd.init(); lcd.backlight(); lcd.clear(); pinMode(LED_PIN, OUTPUT); pinMode(BUZZER_PIN, OUTPUT); rtc.disableAlarm(1); rtc.disableAlarm(2); rtc.clearAlarm(1); rtc.clearAlarm(2); rtc.writeSqwPinMode(DS3231_OFF); rtc.setAlarm1(DateTime("2000-01-01T00:00:10"), DS3231_A1_Second); rtc.setAlarm2(DateTime("2000-01-01T08:00:00"), DS3231_A2_Hour);} void loop () { if (Serial.available()) { String buffer = Serial.readStringUntil('\n'); setDateTime(buffer); } DateTime now = rtc.now(); printDateTime(now); if (rtc.alarmFired(1)) { ledAlarm(); rtc.clearAlarm(1); } else if (rtc.alarmFired(2)) { buzzerAlarm(); rtc.clearAlarm(2); } else { delay(1000); }} void printDateTime(DateTime dt) { char dateBuffer[] = " DD/MM/YYYY "; char timeBuffer[] = " hh:mm:ss "; lcd.setCursor(0, 0); lcd.print(dt.toString(dateBuffer)); lcd.setCursor(0, 1); lcd.print(dt.toString(timeBuffer));} void setDateTime(String value) { int d, m, y, h, min, s; int n = sscanf(value.c_str(), "%d %d %d %d %d %d", &d, &m, &y, &h, &min, &s); if (n == 6) { rtc.adjust(DateTime(y, m, d, h, min, s)); }} void ledAlarm() { for (int i = 0; i < 5; i++) { digitalWrite(LED_PIN, HIGH); delay(100); digitalWrite(LED_PIN, LOW); delay(100); }}void buzzerAlarm() { for (int i = 0; i < 5; i++) { tone(BUZZER_PIN, 1047); delay(100); noTone(BUZZER_PIN); delay(100); }}In qualità di Affiliato Amazon riceviamo un guadagno dagli acquisti idonei
