The by the data sent from the Mqtt

The project entitled “Mobile
Controlled Home Appliances” provides a reliable system to control and monitor
home appliances remotely using mobile device. This system is designed to provide
assistance and support for elderly and differently abled persons who may find
it difficult to access the manual system. The automated home concept present in
this system improves the quality of human life. This system intends to control appliances and embedded devices
in the house with comparatively low cost, ease of installation and also a user-friendly
interface. The general idea of the system is to employ various sensors and
control systems to monitor the dwelling and according to the mobile application
adjust the various mechanisms that provide heat, ventilation, lighting and
other services. It enables the user to control home appliances like Light,
Fan, Air conditioner, Television etc. with the pressing of the mobile key from
anywhere. The remote
operation of appliances is achieved by any Smartphone, with Android Operating System,
built upon a GUI (Graphical User Interface) based touch input. The android
application acts as a transmitter, which sends the command messages to the
receiver where the loads are connected. By operating the specified remote
switch on the transmitter by the data sent from the Mqtt Broker application,
the loads can be turned ON/OFF remotely through wireless technology. The
popularity of wireless networks in home has increased in recent years and the
advanced computer technology has made the smart devices to commonly have the ability
to communicate through the wireless networks. Small but efficient embedded
devices are used to remotely monitor the conditions at home and application is
used to control the home appliances which are based on IoT (Internet of
Things). Data transfer takes
place through MQTT which is a
machine-to-machine (M2M)/”Internet of Things” connectivity protocol.
It was designed as an extremely lightweight publish/subscribe messaging
transport and hence used in a wide range of home appliances and small device
scenarios. NodeMCU microcontroller is used to perform the control tasks. It also includes firmware that runs on the ESP8266 Wi-Fi SoC
(System On A Chip)  from Espressif Systems and the hardware
which is based on the ESP-12 module. The MyMqtt application is used to Connect
to MQTT v3.1 Broker, Subscribe to various topics, Publish messages to a topic
and Save messages. Mobile Controlled Home Appliances using Internet of Things is
an innovative application developed to control the various home appliances
remotely. The proposed system can provide safer, more comfortable, energy
efficiency and increased economical dwelling.