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Tuesday, 27 December 2016

DHT11 Temprature and Humidity sensor Interfacing with Arduino uno

Hi Hello Electronics Lovers welcome to this tutorial, in this tutorial we will see a DHT 11 a very popular temperature and humidity sensor. Unlike LM35 this is a digital sensor which has only a single pin output and easily displayed humidity and temperature. we have our regular setup our 16x2 lcd and our DHT 11 sensor so you can see in the right side the DHT 11 sensor in the blue color which has four pins the third pin which is NC mean not connected, the first pin goes to vcc mean 5 Volts the second pin is digital output and the fourth pin is ground. 
We will make this circuit by using the analog pin A0 of the arduino UNO as a input pin, off course you can use any available digital input output pins also. Before move further so lets see the documentation data sheet for DHT11, you people can easily check and read the data sheet of DHT 11 humidity and temperature sensor in google or an arduino official website.

Library up-gradation in arduino is very valuable for the case of interfacing something with arduino micrcontroller. In this case we will need the library of DHT 11 sensor, you can download library of this sennor from our website under the section of arduino tab. Kindly, make sure that library is updated  After extracting or copying DHT 11 library in to arduino library folder. The next step is to write the code for this project, further details of the project and code are available in below video.
Must try this project at school or university lab, it,s an easy project. Arduino added simplicity and beauty to the embedded world. 

Sunday, 18 December 2016

Check Electricity Meter Reading Wirelesly Using Arduino and GSM Module

Hi hello Electronics Lovers, today i am going to show you that how to read your home or office electricity meter reading wirelessly using arduino micrcontroller and GSM module. GSM module play a vital role in this project. Working Principle of this project is simple, first Arduino will collect per unit data of the electricity according to the given load, and then it will send to GSM module. The GSM module will send per unit data including price details on specified user mobile number. User will receive a text message on cell phone that will show details about the consumption of electricity. This project will help both the Utility provider and owner for better and smart meter reading.

Required Components

  • Arduino Pro Mini
  • GSM Module Sim 300
  • LCD 16x2 
  •  Electricity Energy Meter (Analogue)
  • Optocoupler 4n35
  • Resistors + Potinitiometer 
  • Connecting wires
  • Holder & Bulb
  • SIM card
  • Power supply
  • Cell Phone

Circuit Diagram

Electricity Meter Reading Wirelesly Using Arduino and GSM Module
You need analogue electricity meter of 3200 imp with calibration or pulse LED capability. By removing screws and cover from the analogue meter carefully, search for the anode and cathode legs of the pulse led inside the electricity meter when you found then take extra connecting wires and take connection from the pulse LED according to the circuit diagram. Inside the source code you can replace the Cellphone number by your own. You can change per unit price in source code according to your country in this section Rupee=Unit*7;  by default unit price is 7 rupees per unit.  

                                              source code Courtesy Saddam khan from engineersgarage 
This Project is very easy, if you people found any difficulty while making this project so please don't hesitate to ask we are here to help you free of cost.

Sunday, 11 December 2016

Degree Attestation Process for Higher Education Commission (HEC)

Documents Required For the attestation of the Degree and DMC/Transcript

1) Matric DMC and Certificate 

2) Fsc DMC and Certificate

3) BS/Graduation DMC and Degree 

4) Original CNIC Card  

5) One photocopies set of the above documents

Wake up Early in the morning like 5:30 Am, and reach to near HEC Head quarters.

Stand in line and wait for your turn

Authority person will issue a token to you

Wait for the call and then go to computer lab and fill online form.

After taking print go to another section, they will check your documents.

After that you need to deposit Attestation Fees at Bank section.

Submit your original + photocopy set of your document, and after 4 hours later they will return your documents with attested stamp.

This is over all process which i faced today, I request to everyone must check your all documents before going to an Hec headquarters. Second thing that no Verification is needed from IBCC for matric and Fsc certificates. Kindly Share this with your colleagues and friends.

Thank you 

Saturday, 19 November 2016

Efficient Battery Charger Circuits List 2016

Hi hello guys, today i am going to share some useful links about charger circuits. These circuits are tested and verified, it will help us to make efficient battery charger for your car and portable device batteries. Before going to implement circuit on printed circuit board or bread board first simulate the circuit on Proteus software. These projects are very easy and useful.

Efficient Battery Charger Circuits List 2016

 1)       1.3V Power Supply 

Saturday, 8 October 2016

How to add GSM Module Library in to Proteus 7 & 8

1) Download the Library Files ( A zip folder )

2) Paste these two files GSMLibraryTEP.IDX and GSMLibraryTEP.LIB  in to Library folder 
How to add GSM Module Library in to Proteus 7 & 8

3)  If you are using Proteus 8 then Library folder will be within the data Folder (Proteus 8 Professional\Data\LIBRARY ) OR  ProgramData (C:\ProgramData\Labcenter Electronics\Proteus 8 Professional\LIBRARY)

4) Now open Proteus software (restart it if its already open) and search for GSM

5) Proteus work-space and they will look like as shown in below figure: 

Function of all these three GSM modules are same but different in color. 

6) It,s time to test our GSM module in proteus software, double click on it and a new window will appear as shown in below figure and add the GSMLibraryTEP.hex file in it. 

6) Now it,s time to make a simple circuitry by adding virtual terminal to GSM module by connecting Tx and Rx pins of the virtual terminal to Gsm module Tx Rx pins. 

7) To check the response of the GSM module send At commands ......... Love you all -- Enjoy 

******* Last three Images and library courtesy theengineeringprojects.com ********

Thursday, 15 September 2016

Arduino Based Heartbeat Monitor Project 2016

Project Demo 
This is DIY project so i request to every Electronics lovers to make this project by yourself. This project is very simple, if you found any difficulty while making this project so don't hesitate to ask question, our team is here to troubleshoot your problem. 
Download Source Code : 

Wednesday, 14 September 2016

How to interface IR MODULE to Arduino Uno ( For beginners )

Now days IR is very common that every automatic electronic device consist for the control from a distance. This is very easy to use and require very small setup.in this part we are going to implement a system in which a IR recorder interfaced with Arduino is used to control the electronics devices as well as heavy electrical devices. Ordinary IR remote control (e.g. TV, DVD Player) will be used for this purpose.

IR Decoder:

TSOP38238 shown in the figure. This device consist of IR sensitive photocell, automatic gain control and, a 38 kHz band pass filter. It can be operate on 3.3v or 5v of power supply. It receive the IR signal and decode it then give you a clear binary signal (Square Ware) of voltage level that you have given to the IR Module. Due to this it’s very ideal for feeding its 5v output direct to the Arduino digital pin. 

Experimental Setups:  

1. There are three pins on the module Power and GND are common pins .The SIG pin are
output pin and connect it to the digital pin of Arduino here we connected on pin D11.

2. This module will not work unless you import the desired library to the Arduino IDE Download it from the internet make sure the is some serial code available in the sketch to see the results on the serial monitor

3. Start a new sketch and click
Sketch->Import Library->IR.

4. Connect the Arduino to your computer using the usb port, then upload the sketch. Open up the Serial Monitor, get the remote and press the buttons. Some hex codes should appear on
the Serial Monitor

Control Home Appliances using infrared tv Remote

Saturday, 20 August 2016

How to interface HC-05 Bluetooth Module with Arduino

This is such part of project that uses Android mobile technology to control different appliances. To control various home appliances from mobile, Bluetooth dedicated application should be installed on his/her Android phone and by using that application you can send commands. Through Bluetooth technology we can wirelessly control appliances. Bluetooth module is used to receive those commands and this Bluetooth device is connected to Arduino. Upon particular commands This Arduino acts as controller and a hub that switches respective devices connected to the circuit. Hence appliances will be turned on or off depending on the command given. It is an application based Part, where u can control the electronic appliances in home by an android application. By using this app, you can control the electronic appliance in homes within a range of Bluetooth. The block diagram of interfacing Bluetooth with Arduino is shown below. 

HC-05 Chip is known as Bluetooth SPP (Serial Port Protocol) module. It is Used for transparent wireless serially connecting setup .It is fully dedicated Bluetooth V2.0+EDR (Enhanced Data Rate) 3Mbps Modulation Along with complete 2.4GHz radio transceiver. It has CSR Blue core 04-External single chip Bluetooth system with Complementary Metal Oxide Semiconductor technology and with AFH (Adaptive Frequency Hopping Feature). It has the Dimensions as small as 12.7mmx27mm.
Experimental Setup HC-05 Pinout (Right): 

• TXD: Transmit Serial Data from HC-05 to Arduino Serial Receive.  NOTE: 3.3V HIGH level: OK for Arduino 

• KEY: If brought HIGH before power is applied, forces AT Command Setup Mode. LED blinks slowly (2 seconds) 

• VCC: +5 Power 

• GND: System / Arduino Ground 17 

• RXD: Receive Serial Data from Arduino Serial Transmit 

• STATE: Tells if connected or not


1. Connect TX (pin 11) from Arduino board to the RX pin of module. 

2. Connect RX (pin 10) from Arduino board to the TX pin of module. 

3. Connect 5v pin in Arduino board to the VCC pin of module. 

4. The GND pin of module to GND pin in Arduino board. 

5. Now open Arduino IDE(Any Version) and connect Arduino to the PC. 

6. Set the Serial Port For the Connection Arduino from Tools>>Port 

7. Upload the Program (Given) To the Board. 

8. Make Sure the Software Serial Pins of the Arduino is Correctly Initialized

Software program 

SoftwareSerial mySerial(10, 11); 

• This Command Set the Pin 10 to the Rx ok the Arduino and Tx of the Module should be connected 

• This command set the pin 11 to the Tx of the Arduino and Rx of the Module Should be connected 

• Make Sure that both the serial connections are set at same Baud Rate(For Convenience ) e.g 9600 

• Serial.begin(9600); Between Arduino and PC 

• mySerial.begin(9600); Between Arduino and Module 


• There is an increasing demand of smart homes where appliance react automatically to changing environmental conditions and can be easily controlled by a common device • The wireless technology is especially important in home where there exists hardly any infrastructure to interconnect intelligent appliances 


Bluetooth is undeniably resource which can make a home automated. People can control their electrical devices and setup desired actions through mobile.In future this product may have high potential for marketing as it is cheap and easy.

© Asad Saleh Hayat (Asadhayat5@yahoo.com) - Report page no 16 to 19 --Smart Home Automation

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