There is a lot of confusion among students when it comes to projects. Nowadays almost everybody is aware of Android and its features. Android projects are a preferable option because of its fast-growing trend. Even though there are a lot of Android projects over the internet, it is either too complex or out of trend. So we have listed out the top 20 Android projects which are simple to build and as well as in trend.
Android Smartphone-Based Function Generator
This Android-based function generator output is in the range of audio frequency signals (20Hz-20,000Hz), available at the audio output port of cellphones. Most cellphones have 3.5mm audio jack output ports. You can use an audio cable with the audio jack between the cellphone and external devices or any other applications.
More information about this project is available at: Android Smartphone-Based Function Generator
Home Automation Using Arduino Through Android Device
This project is based on the Android app and Arduino Uno using Bluetooth as the wireless communication medium. It is a simple and flexible home automation system with only a few electronic components, without complex soldering. This project is designed to control three appliances, but it can be extended to six or more.
More information about this project is available at: Home Automation Using Arduino Through Android Device
Software-Defined Radio with Android Smartphones
This project talks about how RTL-SDR dongles can easily perform the function of an SDR receiver using an Android smartphone with on-the-go (OTG) support.
More information about this project is available at: Software-Defined Radio with Android Smartphones
Program Arduino With Your Android Device
This article explains how you can program an Arduino board using ArduinoDroid app on your Android device like a smartphone or tablet.
More information about this project is available at: Program Arduino With Your Android Device
IoT Based Notification System Using Android App
Presented here is a smart notification system for a door sensor, motion detector, fire alarm and doorbell using Raspberry Pi (RPi) and Pushover app. The project triggers an event through various sensors and sends notifications to your smartphone.
More information about this project is available at: IoT Based Notification System Using Android App
Surveillance Camera Using RaspiCam And Android App
This project describes how to build a surveillance camera based on Raspberry Pi (Raspi) that records HD video only when something moves in the monitored area. Live feed can be viewed from any Web browser, including one on a mobile phone.
More information about this project is available at: Surveillance Camera Using RaspiCam And Android App
Android Projects: Home automation system
The first android project is this home automation circuit built around an Arduino board, Bluetooth module and a 3-channel relay board. The number of channels depends on the number of appliances you wish to control. The software program for home automation using Android app is written in Arduino programming language called Processing. Arduino is programmed using Arduino IDE software. The app on your Smartphone sends data when you click on buttons or feed voice commands via Bluetooth in the mobile to Bluetooth module connected with the Arduino board. Receive data pin of the Bluetooth module is connected to Arduino. Arduino processes the received data and controls the relay board accordingly.
More information about this project is available at: Home automation system using Android
Android controlled robot
This is a robot that can be controlled using an app running on an Android phone. The software for the robot is written in Arduino programming language. The Arduino UNO is programmed using Arduino IDE. The control commands for the robot are sent from the phone using the app. The related data corresponding to control commands is sent through Bluetooth. Data transmitted by the phone is received by Bluetooth module in the robot. The received data is fed to the microcontroller which processes the data and drives motors accordingly.
More details are available at: Android phone controlled Robot
Arduino-Controlled 12V Battery Charger
The circuit presented here can automatically charge a 12V, 7Ah battery, or above. Special features of the charger are as follows. It automatically controls the charging current as per the status of the battery. Battery voltage level, as well as charging status, are indicated on the LCD display.
More details are available at: Arduino-Controlled 12V Battery Charger
Interfacing Multiple LCDs With Arduino
The circuit here describes interfacing of three 16×2 LCDs with common data lines to an Arduino Uno board. Four data lines of all the three LCDs are connected to digital pins of the Arduino Uno board but data displayed on each LCD is different.
More details are available at: Interfacing Multiple LCDs With Arduino
Arduino-based Front Office Visitor Alarm
This Arduino based visitor alarm is useful for offices, clinics and shops. It alerts you to the entry of a visitor by producing a beep sound every time the door is opened. The alarm automatically switches off after a few seconds.
More details are available at: Arduino-based Front Office Visitor Alarm
Interfacing a Laser LED with Arduino
This project turns on and turns off a laser LED after every second. It can also monitor its own supply voltage level. The circuit can be extended for use as an audio-visual alarm system for security applications.
More details are available at: Interfacing a Laser LED with Arduino
GPS Clock using Arduino
Here we describe a GPS clock based on Arduino Uno R3—an AVR ATmega328-based microcontroller board with six analogue inputs pins and 14 digital input/output (I/O) pins. The microcontroller has 32kB ISP flash memory, 2kB RAM and 1kB EEPROM. The board provides serial communication via UART, SPI and I2C.
More details are available at: GPS Clock using Arduino
DC motor control by Android
DC motor controller by Android is developed to control the speed of the DC motor in both clockwise and anticlockwise direction. For this, DC motor is interfaced to the 8051 microcontroller. A Bluetooth modem is used to receive direction commands and PWM commands. When an Android device sends commands, it is received by the Bluetooth modem which then sends the commands to the microcontroller. The microcontroller controls the DC motor through motor driver. LCD display is used to show the status and the speed of the DC motor. The android application is used to control the entire system. The start button is first clicked to start the motor and then the motor can run in both clockwise and anticlockwise direction.
More details are available at: DC motor control by android
Railway level gate control
The system allows user to easily open and close the railway gate through the use of a simple android based application. It operates by providing the opening and closing functionality of a railway gate by sending commands through an android application. The remote controlling application is provided through an android application. A Bluetooth device attached to the railway gate is used to receive commands. These commands are then passed on to an 8051 microcontroller which then performs the required action. On receiving opening command, it drives the motors to open the gate and closes the gate on receiving the close commands. It does this by driving the motor through a driver IC to achieve this functionality.
More details are available at: Android controlled Railway Level Gate Control
Voice controlled robotic vehicle
The integration of control unit with Bluetooth device is done to capture and read the voice commands. The robotic vehicle then operates as per the command received via android application. The android controlling system provides a good interactive GUI that makes it easy for the user to control the vehicle. The transmitter uses an android application required for transmitting the data. The receiver end reads these commands and interprets them into controlling the robotic vehicle. The android device sends commands to move the vehicle in forward, backward, right and left directions. After receiving the commands, the microcontroller operates the motors in order to move the vehicle in four directions.
More details about this project is available at: Voice controlled Robotic Vehicle
Wireless robotic arm
The commands are sent to the receiver to control the movement of the robot either to move forward, backward and left or right using android application device. Four motors are interfaced to the microcontroller where two motors are used for arm and gripper movement of the robot while the other two motors are used for the body movement. The android application device transmitter acts as a remote control that has the advantage of adequate range, while the receiver end Bluetooth device is fed to the microcontroller to drive DC motors via motor driver IC for necessary work. Remote operation is achieved by any smartphone/tablet etc. This system can be enhanced by interfacing it with a wireless camera so that the person controlling it can view operation of the arm and gripper remotely.
More information is available at: Robotic Arm wirelessly controlled by android
Military spying and bomb disposal robot
This system makes use of robotic arm as well as robotic vehicle which helps not only to enter an area involving high risk but also to pick whatever object it wants to. The system also includes night vision camera which will not only allow viewing whatever will be recorded in day time but also during night. It sends commands to the receiving circuit mounted on the vehicle through android device application. The receiving circuit involves 8051 microcontroller and a Bluetooth device which receives commands sent by the Android app. This application involves both robotic arm and robotic vehicle so that the system can not only be used to enter a high risk area but also to pick, move and place whichever objects it wants to. Each and every movement of the vehicle will be recorded and can be viewed in a PC wirelessly.
More about this is available at: Android Military Spying and Bomb disposal Robot
Remote password security
The system is configured to allow authorized person with a password. A password changing provision is also provided along with it. The password entering feature is providing through remote access. Remote access is provided with the use of an android application that can run on any android device. The app provides an interactive GUI for this system. The system is operated using a microcontroller. An EEPROM is used to store the user password. The password entered through the android device is received through Bluetooth receiver and then passed on to microcontroller which then processes it and then checks its validity by comparing against user stored password. Our system uses a door that would be unlocked on entering the right password.
More details about this are available at: Android controlled Remote Password Security
The main component in the circuit is a microcontroller. A 4×3 keypad is used to enter the password. The password which is entered is compared with the predefined password. If entered password is correct then the corresponding electrical line is turned ON or OFF. In this project a separate password is provided to each electrical line. Activation and deactivation of the line (circuit breaker) is indicated by the load. Lamps are connected through the relays. A 16*2 LCD is used to display the information.
More details about this is available at: Android circuit breaker
Induction motor with 7 segment display
Android mobile or any device acts as a transmitter through Bluetooth, which is then received by Bluetooth receiver interfaced to a microcontroller. Each time, data sent by android application is executed by the microcontroller to deliver delayed firing pulses to the thyristor through optical isolation. The power to the load connected in series with the thyristor is controlled, based on the received signal. Also, the firing angle is displayed on a 7-segment display. A lamp load shall be provided in place of a motor whose varying intensity demonstrates the varying power to the motor for speed control.
More details are available at: Android controlled induction motor with 7 segment display
For more Android projects turn over to the next page.
Android Projects: Firefighter robot
The commands sent from the android device can control the movement of the vehicle to move in all directions. The receiver consists of a Bluetooth receiver, Bluetooth decoder, microcontroller, 2 motor drivers and a relay. The Bluetooth receiver receives the signal transmitted by the phone and decodes the received signal. The decoded signal is further processed by the microcontroller. The microcontroller then drives the motor drivers to move the robot left, right, forward and backward. The water sprinkle nozzle movement of the robot can also be controlled by the user. The water pump is connected to the relay which is controlled by microcontroller to turn ON/OFF the water pump to extinguish the fire.
More details are available at: Android controlled fire fighter robot
Remote AC power control
This project is used to control AC power to a load by using firing angle control of thyristor. Remote operation is achieved by any smart interface based touch screen operation. Comparator whose output is then fed to the microcontroller. The triggering control to a pair of SCRs through isolator interface. Finally, power is applied to the load through SCRs in series. Microcontroller is interfaced with a Bluetooth device. It receives signal from android application. A lamp is used in place of an induction motor whose varying intensity demonstrates the varying power to the motor.
More details are available at: Android controlled Remote AC Power Control
Antenna positioning system
The system uses 8051 family microcontroller and LCD. This LCD is used to display the status of the angle of the antenna. The system makes use of stepper motor to demonstrate as the antenna motor is used to move the antenna in proper direction. Antenna is moved by the user commands received through the android application. These user commands are then received by the Bluetooth receiver modem. As the system receives user commands, it moves the antenna on the basis of input parameters provided. The input parameters include number of steps i.e. the angle in which the antenna is to be moved. Second parameter specifies whether to move the antenna in clockwise or anticlockwise direction. The third input parameter specifies the speed in which the antenna should move. The speed parameter includes L for low, M for medium and H for high speed.
More details about this are available at: Android Antenna positioning system
Hovercraft controlled by android
Here, we have an advanced hovercraft that uses high rpm motors interfaced with an AVR family microcontroller to achieve desired functionality is used. The motor below hovercraft rotates at a very high RPM that allows it to generate a force enough to make it hover on the surface thus reducing the friction below it to minimum. There is a motor propeller mounted behind it to push the hovercraft in forward direction. A servo motor is attached to the hovercraft rudder that helps the hovercraft to move in desired directions by bending the air at accurate angles. The android application sends movement commands to the hovercraft circuit. The circuit consists of a Bluetooth receiver to receive and process these commands. The commands received by receiver are now processed by the microcontroller and it then operates all three motors accordingly as desired by the user.
More details are available at: Hovercraft Controlled by Android
Voice controlled robotic vehicle
The project is designed to control a robotic vehicle by voice commands for remote operation. An 8051 series of microcontroller is used together with a Bluetooth device interfaced to the control unit for sensing the signals transmitted by any Android application running cell phone. The transmitting end uses an Android application through which the voice commands are transmitted to digital bits. At the receiver end, these commands are used for controlling the robot to make it move forward, backward, left or right. At the receiving end, two motors are interfaced to the microcontroller where they are used for the movement of the vehicle. Serial communication data sent from the Android application is received by the Bluetooth receiver interfaced to the microcontroller.
More details are available at: Voice controlled Robotic Vehicle
Voice-based notice board
Main concept behind voice operated electronic notice board using rolling display is to show scrolling messages and to control them by using our own voice. User has to give voice command in his/her own voice to control the scrolling messages displayed on electronic notice board. Voice recognition is done in the Android application. User has to install this Android application in his/her smartphone or tablet. Then user has to give voice commands to this android app. Android app then passes these commands to the microcontroller using wireless communication. Wireless communication technique used in this project is Bluetooth technology. Messages to be displayed are stored in electrically erasable programmable read-only memory (EEPROM). It holds data even after the circuit is reset. Microcontroller receives these commands with the help of Bluetooth receiver and decoder. Then it passes these commands to the rolling display which is made up of matrix LEDs.
More details about this are available at: Voice based notice board using Android
Android password based remote door opener system
The system tends to make a secure door opening mechanism such that the door only unlocks when a security personnel opens it by entering the right password through an android application. The command sending functionality is achieved through an android application. The application provides an interactive user friendly GUI for this purpose. The android application can be operated from any device running on android OS and uses Bluetooth as a medium for sending commands. As soon as commands are sent through the android device, a Bluetooth receiver is used to receive those commands. The microcontroller processes these commands and then tallies the password to check its correctness. If the right password is encountered it sends command to open the door.
More details are available at: Android password based Remote door opener system.
Ultrasonic distance meter with buzzer indication
Android based ultrasonic distance meter is used to measure the distance of a object. This distance is shown on LCD as well as on Android mobile application. A buzzer is turned on when the distance of object is less than 10 centimeters. The system uses a Bluetooth transmitter, a LCD display and microprocessor which does the operations according to the received command. This project can be used in industries, companies and the like. This project also has application in robotics.
More about this is available at: Android based Ultrasonic distance meter with Buzzer Indication
Metal detector robotic vehicle
This project develops a robotic vehicle with a metal detector system embedded on it which can sense the presence of metals ahead of it. The control signals are transmitted to a Bluetooth device interfaced to the microcontroller and as per the program, the microcontroller gives logic signals to the motor driver to rotate the motors in the desired direction or stop the motor. A metal detector consisting of a coil in resonance is embedded on the circuit and when a metal comes near it, because of faraday’s law of induction, the resonance is disturbed that gives the indication of the metal being detected and accordingly this indication is shown by a LED glowing with an audible buzzer sound.
More details about this is available at: Metal Detector Robotic Vehicle Operated by Android Application
We hope these Android projects helped you. You can pitch in more of your Android projects in the comments section below.
This article was first published on 20 December 2016 and was recently updated with new projects on 4 April 2019.