ഹൃദയത്തിൻ കദനത്താൽ (രേവതി)

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4 Stage Timer With DS3231RTC Module.

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Componet List 1-Arduino Uno or Arduino Nano 2-DS3231 RTC Module 3-16x2 LCD screen 4-5v 2A DC Regulated power Supply 5- 5v DC, 10A single Channel Relay Module  6-ON/OFF Switch 7-Normaly open Push buttons-4 Numbers 8-Green LED with Holder 9-10 K Preset 10-100 Ohm Resistance 11-10 A barrel fuse with Holder 12-13 A /AC Socket Outlet 13-PG Gland 14-3 core 4 mm copper flexible cable. 15-13 A ,3 pin Plug 16- Plastic Mounting screws. 17-8"x 5" Size PVC junction Box. 18-5 Volt DC Buzzer 19-4 mm square single core wire 20-Female Header Connector. ------------------------------------------------  #include <DS3231.h>//Memanggil RTC3231 Library #include <Wire.h>  // i2C Conection Library #include <LiquidCrystal.h> //Libraries #include <EEPROM.h> LiquidCrystal lcd(2, 3, 4, 5, 6, 7); //Arduino pins to lcd #define bt_clock  A0 #define bt_up     A1 #define bt_down   A2 #define bt_timer  A3 #define relay 8 #define buzzer 13 // Init...
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Digital Clock with Arduino and RTC Module and P10 LEDmatrix

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  #include <Wire.h> #include "RTClib.h" #include <SPI.h>        #include <DMD.h>     #include <TimerOne.h>   #include "Arial_black_16.h" #include "Font_6x14.h" //-> This font only contains numbers from 0-9. Used only to display time. #define DISPLAYS_ACROSS 1 //-> Number of P10 panels used, side to side. #define DISPLAYS_DOWN 1 DMD dmd(DISPLAYS_ACROSS, DISPLAYS_DOWN); RTC_DS1307 rtc; //-> RTC Declaration int _day, _month, _year, _hour24, _hour12, _minute, _second, _dtw; int hr24; String st; char nameoftheday[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"}; char month_name[12][12] = {"January","February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December...
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Interfacing MQ2 Gas & Smoke Sensor With Raspberry Pi Pico

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Click on the link below to Download the Code from GITHUB https://github.com/anokhramesh/MQ2Gas-and-Smoke-with-Raspberry-pi-pico import machine,time from machine import Pin,PWM import utime MQ2 = machine.ADC(26) led_red = Pin(14,Pin.OUT) led_green = Pin(15,Pin.OUT) buzzer = PWM(Pin(13)) conversion_factor =3.3/(65535) while True:     smoke_value = MQ2.read_u16()     voltage =MQ2.read_u16()*conversion_factor     print("Smoke_value is",smoke_value)     #print("Voltage is",voltage)     utime.sleep(4)     if smoke_value<=6000:         led_green.toggle()         time.sleep(0.2)     else:         led_green.off()              if smoke_value>=10000:         buzzer.freq(500)         buzzer.duty_u16(90000)         time.sleep(0.9)         buzzer.duty_u1...
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