How to make Arduino Laser Turret using Servo motors and Joystick

(Last Updated On: December 20, 2021)

Arduino Laser Turret, Overview:

Arduino laser turret

How to make Arduino Laser Turret using Servo motors and Joystick- Hi, In this Project, I will show how to make a laser turret using Arduino, Servos, and two axis Joystick.  I have given codes and circuit diagram with in-depth explanation of the project so that anybody can try this to make without facing any problems.

Before starting to build this we should know why or what is the ideology behind this project.


What is Arduino Laser Turret?

It is a simple gadget that has laser module attached to bidirectional servo mechanism and is controlled by a ps2 mode joystick, Now you may think where exactly this project is helpful.

To answer those questions I can say there are hundreds of practical application for this but it depends on the application. I will explain this giving some examples.

Imagine you have a Bluetooth controlled robot with 4WD option, despite its power to crawl on off-road we can add a camera to its head so that we can not only see the front view but also the side view and top view, Here this concept is same but the modules can be interchanged.

Apart from this one more application of this is adding a water sprinkler that can be useful in fire fighter Arduino robot, With the controllable direction of the water pipe we can sprinkle the water accordingly, Like these there are different kind of applications.

So these were the examples to give you an idea showing this project is not limited to single area!

Now as you are aware of this project we can start to build this, I will be explaining this via stages with which you can follow easily.



Stage 1

Designing

I have made the servo mechanism part from 3d printer, if you are a beginner to creating designs don’t worry here is the stl files for this project.

Download 3d Files:

Once you have your stl files we can go for printing, but before we need to slice the design, to slice I will be using the most popular cura slicer.

Arduino laser turret

It took me more than 3 hours to get the printed parts, I preferred white pla filament to make this, you can use color of your choice, make sure you have selected adhesion because as we are printing 3 parts at once even if one face issues we should deal with issues of other 2.

Arduino laser turret

Once you have your print ready it needs some basic cleaning, this web like structure appears because we are not using direct supports, usage of direct supports adds a extra layer of time for the overall printing time.


You can see the web like structure being cleaned using a hobby knife in the image below.

Arduino laser turret

It will take some time as we need to repeat same process all these 3 parts. Once you done removing we will have this parts as shown in below image.

Arduino laser turret

Now the main mechanism is ready and just we need to assemble this, to assemble we need all other components, So now we can start with second stage.


Stage 2

We will gather all the materials as shown in below image.

  • Arduino uno
  • Jumper wires and breadboard
  • Joystick module
  • 2 micro servo
  • Laser diode
  • Arduino IDE

Arduino laser turret

Before assembly we need a circuit diagram that shows the connections between all these components.


Circuit Diagram For Arduino laser turret:

Arduino laser turret

Building Circuit following Circuit diagram

To make it a lot easier I will explain this component wise.

We have 2 main component here one is micro servo and other is ps2 module.

Micro servo connections

Arduino laser turret

Micro servo comes with 3 different pins, 2 for + and – power supply and one for signal.

From the circuit diagram we can see that positive and negative pins from 2 of the servos are connect to power rails on the breadboard where as signal pins are connected to D3 and D4 pins on Arduino Uno.

Function of servos here: In this project the up down and swing action is taken care of these servos and on the second servo horn we have a holder that holds the laser module.



Analog joystick module

Joystick module has 4 different pins out of which 2 are for power supply and the remaining 2 are for vertical and horizontal control.

Arduino laser turret

Connections: we connect + and -ve pins to power rails of the breadboard where as the Vrx and Vry pins are connect to A0 and A1 pins on the uno board.

You can connect Laser diode directly on the breadboard power rails where the +5v and gnd pins fronuno are connected.

This completes our circuit, now we can upload the codes to Uno


Arduino laser turret code

Copy and paste this code to your Arduino ide.

  1. Connect programming cable to uno
  2. Check for port number and board type by clicking on tools->board type/ports
  3. Click on upload
  4. Once the upload is complete, disconnect the programming cable


Some basics about the code

We start the code by #include <Servo.h> that means we are telling the IDE to include servo library so that it can understand with what module we are trying to communicate

After this we are calling functions for Joystick and then assigning the pin numbers for servos these are called as

and

Arduino laser turret

Now we should assign the values, in short how the servo should respond when it receives input from the joystick module

Delay is the time given to servo more the delay slower will be the response, delay helps to get rid of the noise.


Final assembly

After uploading the code make sure to test all the functions, once these works fine we can assemble everything together

Arduino laser turret

We will start by adding base part of the servo, just slide the servo and attach using screws, or if you are not using this servo in further project you can couple using superglue.

Do the same with second servo and now attach the diode holder to the horns that is glued to 3d printed part

Arduino laser turret

Once you add this, you can couple these using a base servo, that is responsible for swinging action

Arduino laser turret

Now using a piece of double sided adhesive attach all this setup on a Breadboard.

You can use custom 3d print box too, but I wont recommend doing this as it comes with lot of limitations.



Now we can add joystick to the end of breadboad, I will be using a lithium ion battery pack that provides 7.4v of supply for Arduino.

Arduino provides 5v of supply to breadboard and all the other components connected to power rail.

Arduino laser turret

Just connect the power supply and watch your laser in action!

You can change the direction of this laser within the use of analog joystick that gives the feeling of playing video game.

In future we have plans to upgrade this project to a complete wirelessly controlled laser turret and for a ps2 controlled wifi car camera.

Hope you found this project interesting, we will come back with more such projects, Thank you and comment your opinions.


Watch Video Tutorial:

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About the Author: Engr Fahad

My name is Shahzada Fahad and I am an Electrical Engineer. I have been doing Job in UAE as a site engineer in an Electrical Construction Company. Currently, I am running my own YouTube channel "Electronic Clinic", and managing this Website. My Hobbies are * Watching Movies * Music * Martial Arts * Photography * Travelling * Make Sketches and so on...

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