Autorotor - Project Videos

Here are a series of project videos:

Manual takeoff followed by Automatic Way-point Navigation:

Manual Mode: 

Manual Mode: Loiter Failure

Autorotor- an Autonomous Quadcopter

Autorotor, the toy I am building and playing with nowadays. This autonomous UAV (Unmanned Aerial Vehicle) project is still under development.

Here are a few glimpses of the project.

Autorotor frame CAD design:

The assembled Autorotor frame:

Smart Car-The Freescale Cup

The Freescale Cup is a global competition where student teams build, program, and race a model car around a track for speed. The fastest car to complete the track without derailing, wins. The development of this autonomous car requires:

·      Embedded software programming and basic circuit creation using Freescale parts included in the entry kit.

·      Participants to create motor control hardware and software to propel and steer their intelligent car.

·      Participants must also interface to a camera to navigate the car through the race course by following the guide line.

We participated in The Freescale Cup-2012. Here is the video of the preliminary round.

See who is accessing your shared folders on LAN

Wouldn't it be cool to see who is accessing what from your shared folders on the LAN?
Here is the method to do so...

1. Go to Start Menu >> All Programs >> Run
2. Alternately, press Windows key + R to open Run
3. Type compmgmt.msc and hit Enter to open Computer Management
4. On the Left Pane, click 'Shared Folders'
5. Now click on 'Sessions' to see the currently open folders

You can also see what all you are sharing and currently open files.

Fix broken file-system of USB drive

You are at the right place if you are feeling helpless on receiving this error message- "Windows cannot open USB drive due to corrupted files. You need to format the disk."

Here are the steps to fix it:

1. Go to Start >> All Programs >> Accessories >> Run

2. Or simply press Windows key + R

3. Type cmd and hit enter.

4. Type chkdsk H: /F (where H: is your USB drive letter) and hit enter.

This will fix all the file system errors and you will have a working USB drive.

My T-Shirt designs

My designs on MS Paint

Who said you can't paint well in Paint :)
 Some of my creations on Paint before I switched to Photoshop...

Send free SMS to your friends from Gmail

Now you can send 50 free SMS to any mobile network from your Gmail account.

For more info, go to:
http://www.google.com/mobile/sms/mail/

POV based LED Propeller Display

Specifications

Microcontroller: ATmega32
Battery: 4.8V DC Li-ion battery
Motor: 12V DC, High rpm (1500 rpm)

Here is my LED Propeller Display. It works on the principle of 'Persistence of Vision' in human eyes.

Engifest 2012- Celebrating Colors of India

I served as the Design Head of Engifest 2012, the annual cultural fest of Delhi College of Engineering (now DCE). Here are some of my designs... these are my best photoshop creations till date.

My Digital Creations

Cover Design for Facebook page of Digit Magazine:

Lightning Strikes:

Roses, for someone special :

Object-Avoider/Mapping Robot

Specifications

Microcontroller: ATmega32
Motors: 12V DC, 150 rpm, High torque
Mapping sensor: Servo mounted Sonar sensor
Power source: 12V DC adapter

Here is a video of the robot in action:

Hexapod Robot

Specifications

Microcontroller: Atmega 32

Motors: Servo motors, Futaba S3003

Communication link: Serial communication from Laptop

Power source: 6V DC NiMH battery pack

Here is a video of the robot in action:

PID controlled Line Follower

Specifications

Microcontroller: PIC 18F

Motors: 12V DC, 300 rpm

Sensors for detection of black line: IR sensor pair

Power source: Li-Po battery/12V DC Lead-acid battery

Here is the project report:

Line Follower Project Report by himsboss

RoboOne-my first robot

Specifications

Microcontroller: PIC 18F

Motors: 12V DC, 300 rpm

Wireless communication: Bluetooth

                                      Module for the bot: BlueSmirf Gold

                                      User end: Cell-phone/Laptop Bluetooth

Power source: Li-Po battery/12V DC Lead-acid battery

PCB printing using home made method

Forget about the high rates of PCB printing machines. Here is a simple technique to print your PCBs at home using easily available material. It's called Etching.


Material required:

• Laser printer (use your friend's if you don't have one)
• Copper-clad laminate/PCB board (Google to find the vendor call Just Dial and they will tell you where to get one from)
• Electric Iron
• Ferric Chloride solution as etchant (Google or call Just Dial)

Procedure:

• Design the PCB layout on EAGLE(or any other PCB designing software)
• Print it using a laser printer(remember to print a mirror image of the layout). We specifically use the laser printer as the laser ink repels ferric chloride. Thus the part of PCB board which is covered with laser ink is not removed by ferric chloride and the rest of the copper is etched.

From The Tech Sauce

• Clean the surface of PCB board using sand paper to remove oxide layer or oil.
• Use an electric iron to press the printed layout on the PCB board.
• Put the board (with printed paper attached to it) in water for a few minutes. Rub the wet paper to remove it from the board.
• Use acetone(nail polish remover) to clean the board properly.

From The Tech Sauce

• Put the board in the ferric chloride solution. Leave it for a few minutes.

From The Tech Sauce

Thus, you have successfully printed your PCB at home.

How to operate on an IC !

Here is a guide on "How to operate on an Integrated Circuit (IC)"

1. Choose the IC (I used the 7483 Full Adder IC)

From The Tech Sauce

2. Choose your weapon. Cut out its legs

From The Tech Sauce

3. Destroy its body

From The Tech Sauce

4. Cut it into pieces and take out its brain

From The Tech Sauce

5. Throw away the waste, preserve the brain, use it elsewhere, you may wear it in a locket chain or gift it to Jayant on his birthday (wild idea suggested by my friend Karan)

From The Tech Sauce

Experience 3D without any equipment

Get ready to experience the cool 3D effect without the need of any equipment(such as 3D glasses).

Stereoscopy (also called stereoscopic or 3-D imaging) refers to a technique for creating or enhancing the illusion of depth in an image by presenting two offset images separately to the left and right eye of the viewer. Both of these 2-D offset images are then combined in the brain to give the perception of 3-D depth.

This video will help you experience 3D effortlessly. Check it out...

Google 3D cross eyed images for more fun stuff!

Graphic Card buying Guide

Nvidia and AMD are the two big players in the Graphic card market. After going through their product specifications, I have come to the conclusion that the info is of no use for a buyer. A lot of tech magazines and websites test graphic cards and evaluate their performance. Some of them are:

• Chip magazine
• Tom's Hardware
• Digit Magazine

Here is a piece of advice that will help you make the correct buying decision:

Step1: Go to your vendor and inquire about the cards available with him.

Step 2: Go to the sites mentioned above and check out the prices, features and performance scores of the cards.

Step 3: Get back to your vendor and get your mighty weapon.

My first WebApp

Chrome Web Store is a great platform to showcase your creativity in the field of WebApps. Just get your hands on these e-books and you are ready to rock.

• "Step by Step HTML5", by Faithe Wempen
• "HTML5 Up and Running", by O"Reilly

You can also use some WYSIWYG software like "Microsoft Expression Web" or "Adobe Dreamweaver" to develop a cool WebApp

And here i present my first WebApp: Interactive World Map

Click here to see the App on Chrome WebStore.

From The Tech Sauce

From The Tech Sauce