Features of our smart devices
Smart-Home is meant for convinence and efficecy. Controlling and monitoring your home by your smart-phone make things easier. Smart-bulbs,smart-switches and smart-bliends make your home more smarter.
In the Non-smart-Homes or the traditional homes, so much energy waste is due to improper management. Monitoring the full home appliances is insane. When the peak of the electric bill, we don't know what eats the power so much. It is so inconvenient some time for example, when you forgot to turn off the light before sleeping or going far away and forgot to turn off your bulbs or switches..
SolutionSolution is simple. Using concepts like IOT, HCI and AI(future plan) we can implement smart devices for the homes. They can be control using our mobiles and they can semi-automated. And also you can monitor your home power consumption details by using and smart-switch embeded with voltage and current sensor. For this project we going build smart bulbs and the switches.
Our solution Architecture contains two types of devices, they are
Smart-Bulbs & the Smart-Switchs. They both devices, sensors like motion
AC current sensor, AC voltage sensor and the Rellay are directly connected with the Central
Our mobile application and the central unit connectedto the cloud via internet. So they can
with them-self. The central unit will use the MQTT protocol to communicate with the
The energy consumption monitoring, this is a feature embeded with all the switches to calculate the energy consumption and update it to the cloud. This is can be implemented using Two sensor AC Current sensor and AC voltage sensor.
Motion Sensing, Motion sensing is another feature built-in with the bulbs, The motion sensors are connected to the central unit. When a motion detected or the central unit wil turn on the bulb and if no motion/human detected the CU will turn off the bulb.
Mobile applications communicate with the central unit through the cloud or diretly using wifi router. The User settings, user data, and the reports will be stored in the cloud/server.
This our Hardware model of our project. These are the hardware componets we planned to use:
NodeMCU32S is development board which is embeded with the esp32 micro
so small but powerfull. It's the perfect controller for our project because it's
cheap, it already
comes with the wifi module and it has many features.
Feature of the ESP32:
- 18 Analog to DC converter
- 3 SPI interfaces
- 3 UART interfaces
- 2 I2C interfaces
- 16 PWM output channels
- 2 DAC
- 2 I2S interfaces
- 10 Capacitive sensing GPIOs
Passive Infrared Sensor commanly known as Proximity motion
sensor. PIR sensors are
used to detect the movements. It functioning by absorbing the IR rays emits
from the objects.
Humans and animals emit the IR radiation other than that the hot objects
also emits the IR rays so
IR sensor detect the movements of the objects. Many variety of sensors in
the market they vary
with price, sensitivity and range. For this project we HC-SR501. Because it
mid range wide, angle,
good sensitivity and cheap
ACS 712 Current sensor used to measure the current using the
Many current sensors are in the market but we selected this because of it's
size and accuraccy.
it's so small but it can measure up to 30A and the energy wastage is
- 30 A module
- 5V Operating Voltage
- Scale factor 100 mV per Amp
ZMPT101b is a voltage sensor which accurate and small in size
and best suited for
- Measure up to 250 V
- Operating Voltage: DC 5V-30V
- Output Signal: Analog 0-5V
Relay is an electrically operated switch. It consists of a set of input
terminals for a
signal or multiple control signals, and a set of operating contact
switch may have any number of contacts or multiple contact forms, such as
contacts, break contacts, or combinations thereof.
Relay are used where it is necessary to control a circuit by an independent low-power signal, or where several circuits must be controlled by one signal.
The AC Dimmer is designed to control the alternating current voltage,
which can transfer current up to 400V/8А. In most cases, Dimmer is used to
turning the power ON/OFF for lamps or heating elements, it can also be used
fans, pumps, air cleaners, e.t.c. Lately, Dimmer has become an often-used
for smart home systems. For example, when you need to smoothly change the
- Power : up to 400V/600V (8A~24A)
- Operating Voltage 0 - 3.3 V
- Current signal > 10mA
Circuit Diagram of the Smart Plug. Here the led denotes the Load.
Circuit Diagram of the Smart Bulb. Here the led denotes the Bulb.
Budget of our Project
This is the budget of our project
Step in to the future
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