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Smartphone-Controlled AC Lamp Dimmer

This project aims to design a system that allows controlling an AC lamp dimmer through a mobile phone using Bluetooth. The system uses a microcontroller interfaced with a Bluetooth module and triac connected to the AC lamp. The user connects their smartphone to the Bluetooth module to control the lamp dimming operation through an Android app. The microcontroller programmed in embedded C processes the input from the mobile phone and controls the triac and optically isolated diac circuit to adjust the lamp intensity. An LCD display indicates the intensity level. The system provides security authentication through a password and allows remotely controlling the lamp intensity in an energy efficient manner through a user-friendly smartphone interface.

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Hari Kishor
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393 views2 pages

Smartphone-Controlled AC Lamp Dimmer

This project aims to design a system that allows controlling an AC lamp dimmer through a mobile phone using Bluetooth. The system uses a microcontroller interfaced with a Bluetooth module and triac connected to the AC lamp. The user connects their smartphone to the Bluetooth module to control the lamp dimming operation through an Android app. The microcontroller programmed in embedded C processes the input from the mobile phone and controls the triac and optically isolated diac circuit to adjust the lamp intensity. An LCD display indicates the intensity level. The system provides security authentication through a password and allows remotely controlling the lamp intensity in an energy efficient manner through a user-friendly smartphone interface.

Uploaded by

Hari Kishor
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Controlling of AC Lamp Dimmer through Mobile phone

The project aims in designing a system which is capable of controlling the AC


lamp dimming operation through smart phone using bluetooth. As the world
gets more and more technologically advanced, we find new technology
coming in deeper and deeper into our personal lives even at home. Home
automation is becoming more and more popular around the world and is
becoming a common practice.
The process of home automation works by making everything in the house
automatically controlled using technology to control and do the jobs that we
would
normally do manually. It is much easier to install home automation in a
house while it is
still being built, since you have the ability to put things inside the walls to
save space.
Though, people who have houses already built can still have home
automation done in a less intrusive ways.
The controlling device of the whole system is a Microcontroller. Bluetooth
module
and Triac to which AC lamp is connected are interfaced to the Microcontroller.
The user
need to connect his/her smart phone with the Bluetooth module of the circuit
. As the person speak the android app will change the speech into text and
the send to the bluetooth module of the circuit to control the lamp dimming
operation of AC lamp. This system also has an LCD display
which shows the intensity level of the lamp. The Microcontroller used in the
project is
programmed using Embedded C language.
A Triac and optically isolated diac based circuit controls the intensity of the
high
voltage 230volts lamp. This system also employs a zero crossing detector for
smooth
operation of lamp intensity. This project consists of a Microcontroller that
takes input
from mobile phone and processes the request. Then it processes the data
and takes
necessary action and updates the status on LCD. The optical isolation system
safe guards the microcontroller-based system from high voltages. User can
simply set the desired intensity with a smart phone. This system also
provides security authentication to access this system. User has to enter the
password to get access this system.
Features:
1. Aims at energy conservation.
2. Provides user friendly graphical interface.
3. Provides fast access using mobile phone.
4. Device enable with zero crossing detector.
The project provides learnings on the following advancements:

1. Characteristics of Bluetooth technology.


2. Conversion of AC supply to DC supply.
3. Interfacing Bluetooth to Microcontroller.
4. Lamp dimmer circuitry.
5. Embedded C programming.
6. PCB designing.
The major building blocks of this project are:
1. Regulated Power Supply.
2. Microcontroller.
3. TRIAC.
4. LCD display with driver.
5. DIAC with optical isolation.
6. AC lamp.
7. Bluetooth module
8. Crystal oscillators.
9. LED Indicators.

Lab view

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