Tech n' Stuff

You have obviously heard of the Arduino boards and how they have revolutionized hobby electronics.Here is a little primer to get you started. you have heard a lot about 'Internet of Things' and probably bought yourself an arduino kit along with a few more sensors but you can't figure out how exactly use them! If that sounds like you,then you are at the right place. Here's what you will need: An Arduino uno(Obviously!) Jumper wires(Make it yourself!) Breadboard(Optional,but helpful) Arduino IDE There are undoubtedly a lot of sensors available and covering all of them wont't be feasible and that's why I'll cover the most frequently used sensors.so let's get started! Ultrasonic Distance Sensor You would have probably read about the SONAR that's used in ships.By taking the same concept into a small form factor we get a distance sensor.This sensor is available in multiple variants and I'll be using the 'HC-SRO4' variant. ...

Line following robot In this tutorial I am gonna show you how to make a simple line following robot using IR sensors and ARDUINO UNO.I will be providing very easy and effective code that will help you to solve maze containing 90°,45° angles and curves.So les get started. Components required: 1.Arduino uno board 2.L293D motor driver IC 3.IR sensors(here i am using 5 sensors for the perfection of the robot) 4.Chassis 5.BO motors(two) 6.Castro wheel(one) 7.Batteries 8.Power bank(to power the ARDUINO) Steps to be followed:                             Step-1 Assemble BO motors and Castro wheel on the chassis as shown in the figure. Note: This is an example,my real robot have hand made chassis but the process is same. Step-2 Now place the battery and the Arduino uno board on the top of the chassis as shown.Connect the two batteries in series to get 8V out put. Step-3 Connect th...

Then we didn't stop:  After coming back from our first fest,we came with a huge potential,with a dream to achieve something.Luckily we got a new project to do in NIT Rourkela's techfest. Our task: All we had to make a simple forward-backward and side by side moving simple robot.But this should be WIRELESS.The bot we named was "NEON 2.0" after the name of the event " Robo-venture 2.0 ".  Robo-venture 2.0 had the participants guide a self-built wireless user controlled robot through a maze where it had to cross specific checkpoints, while facing various obstacles,in the minimum time to win the game. Real image oof the maze Our robot(NEON 2.0): As i said before,we had to make a wireless robot using Tx,Rx system. Aready i have uploaded the tutorial on "How to make a two channel wireless robot at your home".Click the link below to go to the page directly how-to-make-two-channel-wireless-robot. Conclusion:  The team who won the...

Obstacle avoiding robot Its a kind of automatic robot which can avoid obstacles coming in front its path.In this tutorial I am gonna show you how to make it using simple components and using super simple code. Components we need : Arduino uno R3 *1 Ultrasonic sensor *1 150 RPM BO motors *2 Motor driver IC (L293D) Wheels*2 4V rechargable battery *2 Power bank( any mAh specification )*1 Jumper wires chassis*1 Steps to be followed : Step-1 Assemble BO motors and Castro wheel on the chassis as shown in the figure. Note: This is an example,my real robot have hand made chassis but the process is same. Step-2 Now place the battery and the Arduino uno board on the top of the chassis as shown.Connect the two batteries in series to get 8V out put. Step-3 Connect the motors and power source to the L293D IC as shown in the figure The polarity of the motors can be changed by altering the pin no. jack if the motor does not spin in t...

Initiated from IIT Bombay We initiated with our first techfest in IIT Bombay.We participated in their robotics event-"Technovoltz: Block Warrior". Our manager Abhilash holding the RACC Our robot:RACC Specification: We had used 200 RPM middle shaft motor for wheels 3.5 RPM side shaft motor to move the arm 180 degre 3.5 RPM side shaft motor to lift the arm up and down 3.5 RPM side shaft motor for the gripper Two 12V battery in parallel(12V and 3A) Relay circuit for breaking mechanism Dpdt switch for controlling the robot Rainbow wire to connect  the robot with the remote Mechanism: Our robot could pick up light weight blocks,it had moving arm for the doing the same.It was enabled to establish forward-backward movement and right-left movement.we used 5 dpdt switches to control the movement along with the arm and gripper of the bot.Two dpdt(s) for the controlling of forward-backward and right-left direction and other dpdt(s) for controlling the arm 18...

I have looked around for a good in depth instruct-able on how to make a multi-touch table and I didn't find any I liked. I hope you enjoy making your very own multi-touch table and that my instructions are clear to you. This uses the FTIR (Frustrated Total Internal Reflection) system to track fingers on a screen. Step 1: Materials Here is an important list of materials you will need to construct a multi-touch table. Projector Clear 100% silicon Paint thinner Foam paint roller Vellum drafting paper Infrared LEDs Plexiglas Angle Aluminum Computer Web cam Mirror , I used a first surface mirror. This will make it so there isnt any extra reflection in the mirror. Step 2: Projector You need to get a projector with a fairly short throw distance. I got mine off of ebay for about $70 with 130 hours on it. If you already have a projector ready go to projectorcentral and find your projector and use the throw calculator to find the size of your scre...