Bluetooth based home automation system using android phone
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After the DC supply is being filtered as it is unregulated is turned into a regulated 5V DC supply using LM7805 regulator. Again after that a small 100nF capacitor is there to filter the regulated DC supply. A regulated 3.3 volt supply is also derived from another regulator that is the UA78M33 whose input is fed from the regulated 5V output of the LM7805 voltage regulator. Regulated 5 volt supply is needed to drive the microcontroller, relays and all the sensors, while a regulated 3.3 volt is required by the Bluetooth UART module to operate. After that the regulated supply is fed to all the sensors ,relays and the microcontroller. The system can be controlled from a Bluetooth or Wi-Fi enabled device such as a mobile phone or laptop, while a microcontroller powered box act as the server.
The contact that connects the output to input in SPDT is calledpole. The spring-like structure symbolizes an electromagnetic coil. A mighty STEM kit for beginners of all ages to learn electronics, programming, and robotics. If the door is either fully opened or fully closed then the controller stops the current supply to the door motor, thereby saving current and ensuring the long life of the door motor.
Android App development using Android Studio
Two Relays are connected to L293D to operate two AC appliances. Relay has total five pins, in which two pins are connected to L293D and GND. And COM Pin is connected to AC mains Live terminal and NO pin of Relay is connected to one terminal of the Bulb.
To download the android application to your phone, download the application file from below link and copy the apk file to your phone and then install it. Check whether Allowing installation of non-Market apps in one of the settings tab is checked with tick mark. Once you have installed the application, the next step is to connect with your Bluetooth module from your phone. For this, you need to power the Arduino and Bluetooth module and then turn ON the Bluetooth on your phone and make it visible to other devices. After that, search for new devices in Bluetooth, you can find your Bluetooth module from the list, enter the pairing code which is usually ‘1234’ or ‘0000’when prompted .
Required Components:
You can expand the number for devices you want to control by using more relays. As technology develops, there are a lot of devices and gadgets to keep you safe at home. Instead of spending a fortune on security setup, you can build your own automation security and monitoring system with a simple engineering project. LM35 is a reasonable temperature sensor available in any of the electronics shops.
Here you can manually turn ON/OFF each appliance individually or can simultaneously switch all ON/OFF in one go. FIG 1 This screen displays a boot animation on startup when you click the Smarthome application icon. Along with the animation, an audio message and welcome can be heared in the background. At last, as it uses Bluetooth the user can use the android phone within a range from m . Once evive receives the command string, it performs the action corresponding to the string which is written in the code. Turn on the light to the Terminal module of Dabble, it sends this string to evive.
Component of Android phone based home automation system
Now we have Bluetooth Terminal App installed in our Android phone through which we can send data to Bluetooth Module HC05. HC05 Bluetooth Module is connected to Arduino Mega to serially receive the data sent by Bluetooth terminal App through Android Smart Phone. A 16x2 LCD is used to display the On and Off status of Electronic Appliances. And L293D IC is used to drive two Relay which are directly connected to two Bulbs. 12v Adapter is used to power the Arduino and the circuit. In this project we are to going to wirelessly Control Home Appliances using Bluetooth and Arduino.
Next is the timely updating of the LCD display and the transmission of encoded string serially to the android client if the android client is present. The last task is to check the input serial buffer for commands from the android client and process them accordingly. Also, there are many disabled and aged people who always depends on others for their basic necessities. If you are using a remote-controlled robot it will work on RF circuits which come with very limitations.
thoughts on “Home Automation using IoT
The Vcc2 or VS pin of L293D should be connected to VIN pin of Arduino. Input 1 and Input 2 pins of IC are connected to 10 and 11 pin of Arduino and output pins are connected to relays pins. But after login, it only displays the main screen of turning on and off the appliances.
We have already posted on What is DTMF and DTMF decoder circuits using M8870 decoder IC. Data pins of LCD namely RS, EN, D4, D5, D6, D7 are connected to arduino digital pin number 6, 7, 8, 9, 10, 11. And Rx and Tx pin of GSM module is directly connected at Tx and Rx pin of Arduino respectively. And GSM module is powered by using a 12 volt adaptor. 5 volt SPDT 3 relays are used for controlling LIGHT, FAN and TV. And relays are connected to arduino pin number 3, 4 and 5 through relay driver ULN2003 for controlling LIGHT, FAN and TV respectively.
Only you need some device and follow our instructions. We are sharing all the information to make this awesome project. If you wanna buy this project from us you can also Buy this project. And we are using the internet here to control things which is the definition of the Io. DO NOT share it, anyone who is having it can control your device.
The robot that you build will automatically move along the path using the scanned range data till it finds a tad and then follows a pre-set map for the next movement. The oldest computers build used to be as big as a 2BHK flat. Also, earlier we used to rely on mechanical systems. As we have progressed we are working with electronics that are designed and optimized with VLSI Technology. The application is already available on the play store. This is a smart era and everything needs to be smart.
This brings us to our today’s article about Digital home automation projects that you can perform on your already existing appliances. With a little knowledge and safety, you can do the DIY with ease. We have included 5 different circuit schematics for the project that can be used with your home appliances. And the elements can be picked up from your corner store electronics shop anytime. Here we’ve learned how to build a home appliances automation project that can be controlled by a mobile phone.
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