Smart Alarm Clock using IoT

We are living in a technology based society where we have lots of innovative ideas day by day. These new innovations in IoT communications based projects, strive constantly to share and gather insight on the latest trends in the industrial IoT landscape.IOT or internet of things characterized as an forthcoming innovation that empower us to reated a worldwide networked machines and also the devices that can be helped for exchanging of communication. As we all know that the real time application has been increasing day by day, the smart connection also had increased.

 The use of Alarm clocks started decades ago, but as technology has increased mobile phones came into existence and people find it easy to set alarms on mobile. Here we focus on the IoT based Smart Alarm Clock.  The IoT alarm clock is built using NODEMCU where alarm time can be set using a web page without having an internet connection. This Smart Alarm clock not only wakes up the ring but provides us with many more other applications.

The Smart Alarm Clock Using IOT will have features that will include a weather reporting system with the help of a temperature sensor and humidity sensor. It will also show the traffic status of roads of that particular day with good accuracy. This Smart clock can also be connected to the Home Gadgets and can be controlled via this clock.

Hardware Requirements 

The Hardware Requirements Of The Smart Alarm Clock Using IOT consists of:

  • Microcontroller -Arduino Uno
  • Buzzers
  • DS3231 RTC Module ( Used For Accurate Timekeeping When Main Power Of Supplied To The Device Is Interrupted)
  • LED Lights
  • LCD Display
  • Breadboards
  • Wi-Fi Module ( ESP8266)
  • Speakers
  • Cables And Connectors


A smart alarm clock is designed as an alarm clock that offers more than one smart feature. The IoT Smart Alarm Clock offers may feature other than ringing in the morning. This can be performed via smartphone or any other computer. It offers following 

  • Automatic display brightness adjustment
  • Manage your local mp3 files via the inbuilt web interface
  • Improved 3d printable case
  • Flashy RGB LEDs – for a smoother wakeup
  • Text to speech synthesizer
  • Three ways of wake-up sound:
    • play local mp3 files
    • play internet radio station and
    • play latest news as podcast (independent to the alarm time)
  • Set alarm via smartphone or any other computer
  • Running apache2 server
  • Automatic display brightness adjustment due to inbuilt photocell
  • Audio amplifier volume control
  • 3D-printable case
  • Case built-in tactile switch
  • Alphanumeric display shows text
  • 3W speaker definitely wakes you up


  • Helps in persons time management
  • Cost effective and simple smart feature clock
  • Great idea for a comfortable wake up while all these things,
  • Time saving
  • Gives indication about the behavior of the person sleep.
  • Determine The Correct Posture Of The Person Sleeping
  • Set Your Own Favourite Tunes As An Alarm Tone

Arduino Uno:

Arduino Uno is an open-source based on the Microchip ATmega328P developed by Arduino. cc. The current version of Arduino Uno comes with a USB interface, 14 digital I/O pins, 6 analog pins, an ICSP header, 16 MHz ceramic resonators, a power jack,  and a reset button. And an Atmega328 microcontroller is used to connect with external electronics circuits.


DS3231 Module is designed as a Bread Board friendly extremely precise I2C real-time clock Module. This real-time clock module comes with an inbuilt DS3231 RTC and 32Kbit AT24C32 EEPROM, integrated with a 10-bit temperature sensor. The DS3231 RTC module is a low-power clock providing seconds, minutes, hours, day, date, month and year qualified data. It automatically adjusts the end date of each month especially for months with less than 31 days, and provides valid until the year 2100 leap year compensation. In addition, the clock operates in either the 24-hour or 12-hour format with an AM/PM indicator. And also provides two programmable time-of-day alarms.

ESP8266-Wifi Module:

      The Arduino Uno WiFi is an Arduino Uno with an integrated WiFi module. The board is based on the ATmega328P with an  ESP8266  WiFi  Module integrated.  The  ESP8266  WiFi Module is a self-contained SoC with an integrated  TCP/IP protocol stack that can give access to your WiFi network (or the device can act as an access point). One useful feature of Uno WiFi is support for  OTA (over-the-air) programming, either for the transfer of Arduino sketches or WiFi firmware


The buzzer is a sounding device that can convert audio signals into sound signals. It is usually powered by DC voltage. In our system, a buzzer beeps out when the wrong RFID card comes in contact with the door system.


A Liquid  Crystal  Display commonly abbreviated as LCD is basically a display unit built using Liquid Crystal technology. When we build real-life/real-world electronics-based projects, we need a medium/device to display output values and messages.  


This proposed system on IoT-based smart alarm clock has become quite useful to us in many ways. As the real-time applications have been increasing every day the need of smart connections has also increased. So Challenging the smart connectivity IOT based smart alarms clocks have been designed in this project in an efficient and cost effective way.

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