Raj Madhuram ← geekraj ← Page 2

JavaScript libraries market share wordle

Jun

2012

Here is a wordle I created based on the stats found in w3techs site: Note: The sizes are indicative of the relative popularity and are not to scale.

NXT Virtual Piano – Fail! 1

Feb

2012

Well, this was my plan – to create an extremely simple virtual piano with Lego Mindstorms, just by using the ultrasonic sensor in the manner below: To play the correct frequency for the detected key, I first tried a ladder if-then-else within the Mindstorms visual programming environment, and it absolutely tanked! For every if-then-else path, ...

PlotterBot!

Jan

2012

I wanted to create a robot that can draw something on a paper. Searching for some inspirations, I found on YouTube, a variety of very amazing and cool implementations. Yet, they all drew on a horizontal plane, and were mechanically complex. I wanted something that I could mount on my son’s easel, and draw like ...

Happy NXT Holidays!

Dec

2011

Last weekend we walked into Fry’s to find an awesome deal for Lego Mindstorms NXT 2.0. Mindstorms is a robotics system for kids 10+ years, and it comes with 3 servo motors and 4 sensors (1 ultrasonic sensor, 1 color sensor and 2 touch sensors), and a wide variety of Lego technic pieces. I had ...

node.js based CORS proxy

Nov

2011

Recently I found that a WebGL program I wrote earlier was not working anymore due to CORS restriction. To get around this, I wrote up an extremely simple proxy using node.js and hosted it on the amazing nodester service. You can access the service like this: http://corsproxy.nodester.com/?src=<image url> It just fetches the data from remote ...

Building a Seven Segment Display Widget with YUI 3 and Raphaël 2

Oct

2010

Electronics used to be my hobby while I was growing up, and one of the components that always fascinated me was the seven segment display. So when I wanted to get my feet wet on YUI 3 couple of weeks ago, I thought how cool would it be to develop a widget that renders a ...

jQuery Mobile alpha is released – and it is awesome! 2

Oct

2010

Today, I casually went to see what’s new on jQuery mobile and was treated with a wonderful surprise. The alpha is released! I immediately fired up my stock browser on droid and tried it out. It is so beautiful and I can’t believe its not a native app! It worked great when the device orientation ...

Swype – don’t type!

Feb

2010

I’ve never been excited about typing text on my mobile, but a new technology called swype well might change that, and I bet is going to revolutionize the way we all input text on mobiles. Unlike tapping a series of softkeys, you enter text by “connecting” keys. You should check out the demo videos! When ...

Profanity in Eclipse Plugin! 6

Feb

2010

I was trying to associate specific file type with PHP editor when I noticed some profane text in Eclipse! There is a content type called “s**t happens”, tied to .sql files. Can you believe it? See screenshot. I traced it to DBEdit plugin. I like humor in code, but I am strongly against profanity, even ...

Let It Snow! v1.0 Update – Thank You!

Feb

2010

With your support for Let It Snow! application, we were able to raise USD 750 for Myrtle! This will go a long way in supporting the educational expenses of many underprivileged kids, and also raise HIV/AIDS awareness in rural Chennai. Thank you, thank you! Also, the number of application downloads is 1042 as of today. ...