#VOUCHER FOR ALARM CLOCK PRO CODE#
#VOUCHER FOR ALARM CLOCK PRO DOWNLOAD#

This part of the code is used to set the background colour of the page, button style, text style, etc. Here all the HTML code is assigned in a String called “style_details”. We also need to design a HTML page for webpage interface.

#VOUCHER FOR ALARM CLOCK PRO DOWNLOAD#

You can download the libraries from the links given below:Īfter downloading the libraries add them into your Arduino IDE and include all the libraries in the code. This code requires DNSServer.h, RtcDS3231.h, Wire.h and LiquidCrystal_I2C.h libraries. Here I am explaining the code for better understanding. The complete code for this IoT Alarm Clock is given at the bottom of the page, code can also be downloaded from here. To use this module all you need to do is connect SDA & SCL pins of module to SDA & SCL pins of controller. Out of six pins two pins of this module is not compulsory to use. It has two alarm clock and temperature sensor. The DS3231 works on both 24Hr and 12Hr format.

RTC module provides seconds, minutes, hours, day, date, month, and year qualified data. This module has battery connected to it which keeps the module running in absence of external power to keep track of time and date. DS3231 is a six-pin module that uses I2C interface. A buzzer is connected to D8 pin of the NodeMCU for alarm.ĭS3231 RTC (Real Time Clock) module, as the name suggests, is a clock module. While SCL and SDA pins of DS3231 and I2C module are connected with D1 and D2 pin of NodeMCU respectively.

The Vcc and GND pin, of DS3231 RTC module and LCD I2C module, are connected with Vin and GND pin of NodeMCU. It is pretty simple as we only need to connect one RTC module and one LCD with our ESP NodeMCU board. The complete circuit diagram for IoT Alarm Clock is shown below. A buzzer is used for alarm indication, which beeps when alarm is activated. Here NodeMCU is used for reading time from DS3231 RTC and display it on 16x2 LCD Display. In this NodeMCU based IOT Alarm Clock project, four major components are used- DS3231 RTC Module, NodeMCU ESP8266, 16x2 LCD Module and an LCD I2C Module. So when you connect to this WiFI it will redirect you to your alarm web page. NodeMCU has an inbuilt ESP8266 Wi-Fi shield and this Wi-Fi shield can be used as a Wi-Fi access point (AP), and provide free WiFi network but it doesn’t have internet access. We can create a captive portal using NodeMCU. A captive portal is a web page that is displayed to newly connected users of a Wi-Fi network.

Voucher for alarm clock pro