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Laser Following Microbric Viper Robot
I've been playing around with the Microbric Viper robot construction kit over the last couple of days. The Viper uses a Basic Atom microcontroller which can be programmed in BASIC. These robots can...
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Self Navigating Microbric Viper Robot
Hey folks,After several days of hard work, I've managed to turn my Microbric Viper robot into an intelligent mobile robot, which moves around my house and avoids obstacles along its way! This time,...
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ASIMOV1
Colin has built a fully functional prototype for the Defcon competition, ASIMOV1, using two high torque, serial port controlled servos! He’s also got a cool circle detection code working which...
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Viper Ear: Sound Sensor for Microbric Viper Robot
Hello readers!It’s been a long time since my last blog post. I was a bit busy and wasn’t getting time for blogging. Anyway, I did something cool and thought you people would like it. I’ve been working...
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Opto-isolated Parallel Port Driven Relays
A few months back, I made a parallel port driven relay box for Engineer 2007 with four outputs which were opto-isolated from my PC. Since I didn't have opto-isolators, I built my own by taping...
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Pong Playing Computer playing against another computer using a webcam as an eye!
Download video (5.54 MB)Several years ago, when I was a stupid little schoolboy, I created a really fun and addictive game called Ping Pong. It was based on the classic arcade game, PONG, and had some...
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Cell Phone Controlled Door Latch
Download Video (1.78 MB)I’ve been reading a lot on how DTMF (Dual Tone Multi Frequency) tones work over the last couple of weeks. I’m sure you’ve noticed that when you press the keys on a standard...
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Whistle (or scream) to control your computer!
Hello Readers!It has been a long time since I wrote my last blog post. Well, I had been busy with a lot of things – like college, harmonica playing, meeting people, (and not to mention a whole host of...
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Computer Controlled Stepper Motor
A few months ago, I bought a stepper motor for only Rs.75 (about USD $1.50). I had almost forgotten about that motor until I found it lying in a secluded corner of my bedroom, collecting dust the other...
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I type a LOT...
...and I type fast. That's why you can't see most of the alphabets on my keyboard. Like most of you reading this, I can touch type. People who believe in two-finger-poke typing, always complain how...
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Object Tracking using Camera and Lasers
Hey folks! Here's a little something I built about a month ago, but couldn't get enough time from college to write about it. Well, it's an object tracking camera panner which tracks any object moving...
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Possibility of misuse?
Here's a comment I received on my Cell Phone Controlled Door Latch post the other day:Anonymous said:Nice....wonder how many innocent people died becauseyou posted these easyto follow directions for...
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Happy New Year, 2008
This image was created by my brother, Amrit Derhgawen (he's a character animator) :)I wish all of my readers, be they regulars or new ones, a wonderful New Year with lots of whatever they like. May the...
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Coding4Fun: Laser Tracking Camera
I've finally finished creating Part 2 of my article on controlling stepper motors with a computer. This time I have built a laser tracking camera panner by extending Andrew Kirillov's motion detection...
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New hobby - R/C airplanes!
I've got a new Silverlit X-Twin Eagle Wing R/C airplane for Rs. 1700 (about $40). Having a wingspan of only 9 inches, the plane is small enough to fly in your backyard, or in an indoor hall. Out of the...
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Having fun with Phidgets!
(Click image to enlarge)I've just got a Lynxmotion - Pan and Tilt Kit from Phidgets (thanks to Microsoft!). The kit comes with two servos, a pan/tilt assembly, a Phidgets USB 4-Servo Controller, and...
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Laser Tracking with webcam for Human-Computer Interaction
This post should have been written two months ago, in January, but with all sorts of things keeping me busy, I just couldn't get enough time to shoot videos and write about the project. Anyway, now...
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Coding4Fun: Webcam Based Laser Tracking for Human-Computer Interaction
Here's a new Coding4Fun article I did - Webcam Based Laser Tracking for Human-Computer Interaction.In this article, we will put together a program which will allow us to move the mouse cursor on our...
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A new place, a new beginning...
My family has just moved from Delhi to Bangalore after a tiring 36 hour train journey. Wow..can you even believe that? That's the longest I've ever been on a train! Our movers haven't arrived yet, and...
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Reed Switch Motor and Parallel Port Tachometer
Hello readers! I'm posting a project here after quite some time. After moving to Bangalore, I had slowed down. Well, now I am building stuff again so I'll be posting much more often!A few days ago, my...
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Adding a small HD44780 LCD display to my PC
I've always felt the need to have a small screen on my computer to show some "extra" information which I don't usually want on my screen all the time. By extra information I mean - news headlines, RSS...
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Homemade USB interface board using a PIC
Hello folks,Here's what I've been working on for the last couple of weeks: This is a USB interface board I've built around a PIC 18f4550 microcontroller from Microchip. As many of you probably know,...
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Building a computer controlled wireless robot
For a long time, I have been trying to find the cheapest and easiest way to control electronic devices wirelessly using a computer. It can open up a lot of possibilities. For example, you could build a...
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Motion sensing water gun Tweets photos!
Hello folks! I haven't updated this blog in a long time. I am in San Francisco now, working at Punch Through Design (the makers of the amazing Lightblue Bean). We have a lot of nerf wars happening in...
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Rediscovering the magic of wireless communication
In this modern age of high tech gadgets, it is easy to take the technology around us for granted. If we look at the world around us as if we have never seen it before, it would be impossible not to be...
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