Engineers Garage

  • Projects and Tutorials
    • Electronic Projects
      • 8051
      • Arduino
      • ARM
      • AVR
      • PIC
      • Raspberry pi
      • STM32
    • Tutorials
    • Circuit Design
    • Project Videos
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • Electronic Products News
    • DIY Reviews
    • Guest Post
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • Digi-Key Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • EE Resources
    • DesignFast
    • LEAP Awards
    • Oscilloscope Product Finder
    • White Papers
    • Webinars
  • EE Learning Center
    • Design Guides
      • WiFi & the IOT Design Guide
      • Microcontrollers Design Guide
      • State of the Art Inductors Design Guide
  • Women in Engineering

Bluetooth controlled missile launcher

By Ashutosh Bhatt

Here is a very nice and interesting application of controlling a missile launcher model through a smartphone using an android Bluetooth application. The model of the missile launcher is built using two servo motors. One servo motor (azimuth motor) turns the missile launcher left and right while another servo motor (elevation motor) moves the missile launcher up and down. These two servo motors are controlled using an android Bluetooth application in a smartphone. The user presses buttons in the application to move missile launcher up / down or to turn left/right and the application will send commands through phone inbuilt Bluetooth. The project is built using Bluetooth module and Arduino NANO board that will receive commands from smartphones and rotates both servo motors to position missile launcher as per user commands.

The application demonstrates control of two servo motors using a smartphone with the help of Bluetooth module and Arduino NANO. It’s very simple, easy to build, but yet very interesting project. It requires only two to three components and few connections and that’s all!!!

So let’s start building the project. First let’s start with a schematic diagram, its connections and followed by its operation.

Schematic diagram

missle launcherCircuit description:

As shown in figure there are only 4 components in the circuit, one Bluetooth module HC-05, one Arduino NANO board, and 2 servo motors

  • HC-05 has 4 pins for interface (1) Vcc (2) Gnd (3) Tx and (4) Rx. Its Vcc and Gnd pins are connected with Arduino board 5V and Gnd pins respectively. Other two pins Tx and Rx are connected with Rx (D1) and Tx (D0) pins of Arduino respectively
  • Both servo motors have 3 wires for interface (1) Vcc (2) Gnd and (3) signal. Again it’s Vcc and Gnd pins are connected with Arduino board 5V and Gnd pins respectively
  • Signal input of servo motor 1 is connected with PWM output pin D9 of Arduino board and signal input of servo motor 2 is connected with PWM output pin D10 of Arduino board

Circuit operation

The circuit is energized by giving 5 V through USB or through an external 5 V power supply. When supply is given, both motor attains 0o and missile launcher points to its initial position.

Now to rotate missile launcher in azimuth (horizontal) direction or elevation (vertical) direction, one has to send commands from his smartphone using Bluetooth android application

  • Firstly, one has to open the android application on their smartphone. This application will search and pair with HC05 module (for pairing the first time it is required to enter a Bluetooth passkey for HC05 module which is by default 1234)k
  • Then, someone can send different commands from an application that is transmitted via a built-in Bluetooth phone
  • Four different commands are set in the program to turn missile launcher clockwise, anticlockwise, move up and down

  • Servo motor 2 is elevation motor. It moves missile launcher up and down by rotating motor CW or CCW. It moves missile launcher from 0o to maximum 45o
  • When command is sent from phone, it is received by HC-05 module. The module gives this command to Arduino microcontroller through serial communication
  • Arduino microcontroller gets this command and compares it with all 4 set commands. As per match found, it will rotate servo motor 1 or servo motor 2 either CW or CCW and move missile launcher up / down or turn it CW or CCW

This working and operation of the circuit is as per the program embedded into the Arduino NANO microcontroller ATMega328. So let us see the software program for this systemServo motor 1 is azimuth motor. It turns missile launcher LEFT or RIGHT by rotating motor CW or CCW. It can rotate missile launcher from 0o to maximum 180o.

Software program

The program is written in C / C++ language using Arduino IDE software tool. It is also compiled and downloaded into the internal memory (FLASH) of the ATMega328 microcontroller using this same software. Here is the program code.



Filed Under: Arduino, Electronic Projects, Microcontroller Projects
Tagged With: ardunio
 

Questions related to this article?
👉Ask and discuss on Electro-Tech-Online.com and EDAboard.com forums.



Tell Us What You Think!! Cancel reply

You must be logged in to post a comment.

HAVE A QUESTION?

Have a technical question about an article or other engineering questions? Check out our engineering forums EDABoard.com and Electro-Tech-Online.com where you can get those questions asked and answered by your peers!


Featured Tutorials

  • PS2 Keyboard To Store Text In SD Card Using Arduino Circuit Setup On Breadboard
    How To Use PS2 Keyboard To Store Text In SD Card Using Arduino- (Part 42/49)
  • Wireless Path Tracking System Using Mouse, XBee And Arduino Circuit Setup On Breadboard
    How To Make A Wireless Path Tracking System Using Mouse, XBee And Arduino- (Part 43/49)
  • How to Make a Wireless Keyboard Using Xbee with Arduino- (Part 44/49)
  • Making Phone Call From GSM Module Using Arduino Circuit Setup On Breadboard
    How to Make Phonecall From GSM Module Using Arduino- (Part 45/49)
  • How to Make a Call using Keyboard, GSM Module and Arduino
    How To Make A Call Using Keyboard, GSM Module And Arduino- (Part 46/49)
  • Receiving SMS Using GSM Module With Arduino Prototype
    How to Receive SMS Using GSM Module with Arduino- (Part 47/49)

Stay Up To Date

Newsletter Signup

Sign up and receive our weekly newsletter for latest Tech articles, Electronics Projects, Tutorial series and other insightful tech content.

EE Training Center Classrooms

EE Classrooms

Recent Articles

  • Renesas delivers intelligent sensor solutions for IoT applications
  • Microchip Technology releases AVR-IoT Cellular Mini Development Board
  • Qualcomm acquires Cellwize to accelerate 5G adoption and spur infrastructure innovation
  • MediaTek’s chipset offers high-performance option for 5G smartphones
  • Nexperia’s new level translators support legacy and future mobile SIM cards

Most Popular

5G 555 timer circuit 8051 ai Arduino atmega16 automotive avr bluetooth dc motor display Electronic Part Electronic Parts Fujitsu ic infineontechnologies integratedcircuit Intel IoT ir lcd led maximintegratedproducts microchip microchiptechnology Microchip Technology microcontroller microcontrollers mosfet motor powermanagement Raspberry Pi remote renesaselectronics renesaselectronicscorporation Research samsung semiconductor sensor software STMicroelectronics switch Technology vishayintertechnology wireless

RSS EDABOARD.com Discussions

  • lna+mixer noise figure problem
  • Using LTspice to check Current sense transformer reset?
  • Reference driver for negative/above rail voltages.
  • SMPS topology 24v 10A (prefer simplicity, cost-effective, and high efficiency)
  • Thermal pad construction on pcb

RSS Electro-Tech-Online.com Discussions

  • Identify a circuit.
  • How is this tester made?
  • undefined reference header file in proteus
  • Capacitor to eliminate speaker hum
  • Control Bare LCD With ATmega328p
Engineers Garage
  • Analog IC TIps
  • Connector Tips
  • DesignFast
  • EDABoard Forums
  • EE World Online
  • Electro-Tech-Online Forums
  • Microcontroller Tips
  • Power Electronic Tips
  • Sensor Tips
  • Test and Measurement Tips
  • 5G Technology World
  • About Us
  • Contact Us
  • Advertise

Copyright © 2022 WTWH Media LLC. All Rights Reserved. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of WTWH Media
Privacy Policy | Advertising | About Us

Search Engineers Garage

  • Projects and Tutorials
    • Electronic Projects
      • 8051
      • Arduino
      • ARM
      • AVR
      • PIC
      • Raspberry pi
      • STM32
    • Tutorials
    • Circuit Design
    • Project Videos
    • Components
  • Articles
    • Tech Articles
    • Insight
    • Invention Stories
    • How to
    • What Is
  • News
    • Electronic Products News
    • DIY Reviews
    • Guest Post
  • Forums
    • EDABoard.com
    • Electro-Tech-Online
    • EG Forum Archive
  • Digi-Key Store
    • Cables, Wires
    • Connectors, Interconnect
    • Discrete
    • Electromechanical
    • Embedded Computers
    • Enclosures, Hardware, Office
    • Integrated Circuits (ICs)
    • Isolators
    • LED/Optoelectronics
    • Passive
    • Power, Circuit Protection
    • Programmers
    • RF, Wireless
    • Semiconductors
    • Sensors, Transducers
    • Test Products
    • Tools
  • EE Resources
    • DesignFast
    • LEAP Awards
    • Oscilloscope Product Finder
    • White Papers
    • Webinars
  • EE Learning Center
    • Design Guides
      • WiFi & the IOT Design Guide
      • Microcontrollers Design Guide
      • State of the Art Inductors Design Guide
  • Women in Engineering