Electrical System Projects


IoT Operate Prepaid Electricity Energy meter with On Theft-Temper Detection Disconnect Power

The aim of this project is to design and implement the electricity energy meter using IoT concept. The proposed system design eliminates the human involvement in Electricity maintenance. The Buyer needs to pay for the usage of electricity on schedule, in case that he couldn’t pay, the electricity transmission can be turned off autonomously from the distant server. The user can monitor the energy consumption in units from a web page by providing device IP address.


The project is designed using the Theft detection unit which consists a pair of IR Sensor placed inside the energy meter, which will monitor for any tempering occurs with the meter and immediate notify to company in text information through an advance series of microcontroller interfaced to the ESP8266 WiFi module over internet enable WiFi network. Moreover, upon detection the theft condition the power supply delivered to user is disconnected automatically through a relay connected to main CB at user end. A current sensor is connected in series of supply line to measure load KW/KWh which is calculated by controller programme. Wi-Fi unit performs the IoT operation by sending energy meter readings over internet enable Wi-Fi network to TCP/IP enable web page.


The Hardware circuit consists of an advance microcontroller, ESP8266 Wi-Fi module, Current sensor,LCD display, theft detection unit, 12 Vdc relay. The Programme is written in embedded C-language in controller and wi-fi module. Wi-Fi unit performs the IoT operation by sending energy meter data to web page which can be accessed through a dedicated IP address.


Multichannel Wireless WIFI Light Dimmer

By using a light dimmer in one’s living room, it’s possible to completely alter the mood and ambience of a room at the drop of a hat.
The Internet of Things is set to disrupt the way we live and work. Smart homes filled with connected products are loaded with possibilities to make our lives easier, more 
convenient, and more comfortable. This project proposes a Wi-Fi ESP8266 based Light dimming controller for favourable benefits such as reduced energy consumption and improved longevity - longer the bulbs are dimmed, lesser the energy they use and longer they last.


This project aims to Control the intensity of the dimmable lighting appliances which also can Provide the user , ability to  control lights independently and and wirelessly over the Wi-Fi network and the Internet. The project design uses a Node MCU (ESP8266 WIFI board) which is interfaced to two channel dimming circuit based on op-to isolated MOSFET drive and zero cross detector of AC main voltage. The wireless control via Wifi ESP8266 to web interface can be established from remote mobile with browser support (Chrome, Firefox) for controlling this dimmer. There are two main categories of traditional AC dimmers, Leading Edge Dimmers and Trailing Edge Dimmers. These vary the brightness of the lighting appliance by varying the rms voltage applied to the load. This design uses a Trailing Edge Dimmer, They provide a 'soft start', increasing the voltage to the lamp relatively slowly which increases the lamp life. The zero crossing detector, gives a negative-going pulse when the mains voltage is close to zero. This is used to synchronize the Node MCU to the mains supply voltage.

Automatic Energy Efficient Power Saving for Big Houses and Large Complex

There is increasing demand of electricity savings at every where particularly at the large scale houses and commercial places like super mall etc. There are very high consumption of electricity in too much lights and fan placed, which is need to operate depends on the density of people at the particular zone.


The objective of this Project is to develop a bidirectional visitor counter’ controls the lights as well as count the number of individuals entering and leaving in a large scale houses and mall. A fan speed is also regulated automatic on sensing room temperature and number of person at the particular area. Also on sensing the day-night light by LDR (Light dependent sensor) the lights of particular zone are being switched automatic at night and in case of low day light.


When an individual enters into a room then one counter is incremented by one and one light in a room will be switched ON and when the individuals leaves a room then the counter is decremented by one. When the number of individuals in a room is greater than 5 then 2 lights will be switched ON. Similarly on increase of every 5 individuals one more light will switched ON. Lights will turn OFF when all the individuals go out of a room. The total number of individuals present inside a room is also displayed on the LCD display. IR sensors and microcontroller does above job. IR sensors sense the obstruction and microcontroller receives the signals produced by the obstruction from the sensors. The received signal is operated via program stored in ROM of Microcontroller..


The automatic speed control of fan is also done based on sensing a room temperature r and number of person inside a room. A LDR sensor is also interfaced to sense day-night light. An opto-isolated relay driver drives the particular relay to operate a light connected based on the IR and LDR sensor status and programming logic as defined. This project design is appropriate according to the modern lifestyle. The simulation of the system is also carried out in Proteus Professional Software v 8.0.


IoT Operate Remote AC Motor Speed Control and Protection

Now a day’s all the Industries are being upgraded to Industry in Wireless Monitoring and Controlling of all the electrical appliances. This project proposes an Iot system controlling the speed of the AC Induction Motor using an ESP8266 WiFi Module and ATmega328 Microcontroller. The web page application as operating system, which operates on wi-fi enable smart phone and acts as a controller, wherein Smart Phone acts as a transmitter while ESP8266 (WiFi Module) acts as the receiver.

The project consists an Arduino series of microcontroller interfaced to an ESP8266 WI-FI module and TRIAC driver circuit. The ESP8266 is configured to access point mode acts as wi-fi server any wi-fi enable device like smart phone/pc can communicate to its over TCP/IP protocol. Hence, a TCP/IP web page/application having GUI button panel is used, it can be connect only after enable TCP/IP - ID and Password entered in any remote smart phone. Then, using GUI button commands like Increase, decrease, stop is transmitted, the data sent from the Smart phone is received by the wi-fi module interfaced to the microcontroller, which will send triggering signal to the Gate pin of TRIAC through optical isolator. So the Voltage to load connected in series with TRIAC is controlled based on received signal. So speed control of AC motor is achieved.

The motor is also protected against Over-under voltage and current with continuous monitor it using a voltage and current sensor, which is also connected in series of the supply line, it measures current and voltages of motor by ADC(analog to digital) circuit of microcontroller. The zero cross of mains AC supply is also detected using op-amp circuit. In case of abnormal voltage and current condition the motor is stopped automatically and it display alert on LCD also on remote phone. The speed controlling data such as RPM, Voltage, Current and firing angle are also displayed on local LCD. A lamp load shall be use in place of a motor whose varying intensity demonstrates the varying power to the motor for speed control.

Standalone WiFi (ESP8266) Operated Electrical Load Over the Cloud

The main objective of this project is To control electrical load over the internet from anywhere in the world with a status update on password protected dedicated website with all the hardware housed in a supplied compact enclosure for plug and play the automation system.


The proposed project is designed to control any load through the Internet network over cloud remotely on the basic principle of the Internet of things (IOT). For this real-time scenario here use webpage with user configurable front end to control and monitor the load. A Wi-Fi Module (ESP8266) is configured with any nearby wireless modem to access internet. The received internet commands are fed to the Wi-Fi module. The program within the Wi-Fi Module execute the received commands based on which the load gets activated through a relay driver ULN2003 and Opto-coupler interfaced to Wi-Fi Module. The status of the load is also be displayed on the webpage. The power supply consists of 5V and 3.3V voltage regulator for a Wi-Fi module.


In the proposed concept the program code is written within the Wi-Fi module, hence No need of a microcontroller to drive the load. Thus the remote electrical load can be controlled by a standalone wi-fi module. This makes the system very user friendly, compact and less power consume compare to any other automated control system for electrical load.


This project can be further enhanced by interfacing a microcontroller and suaitable driver circuit for controlling more heavy electrical load.