Category: Tech Stuff

T-Mobile Prepaid Refill Website Sucks!

I’m currently using a T-Mobile prepaid phone which gives me 1500 minutes of talk time for $30 a month. The price is not the best you can get in the market, but is definitely pretty good. I settled for the plan because I already have an unlocked GSM phone.

Infinite Virtual Worlds in Finite Real Spaces (MS Thesis)

As part of my MS program at the University of Minnesota, Minneapolis, I researched a certain way of building immersive virtual worlds. The system involved translating motion within a 1 meter diameter ring into an infinite virtual world. This required some trickery with converting foot steps into virtual motion and simulating motion with optic flow

Controlling MAX7456 OSD using Bus Pirate

MAX7456 is a nifty chip that lets you insert fixed-width characters and sprites into a TV signal. Sparkfun has a very useful breakout board for $40, which ends up being much cheaper than the MAX7456 eval board from Maxim priced around $100. You can find Youtube examples of DIY projects that have used the MAX7456,

Bus Pirate Interfacing using pyBusPirateLite – A Tutorial

Bus Pirate is an incredible piece of hardware for digital electronics tinkerers. It was designed as an interactive sniffer/communication bridge, but has evolved over time to become a Swiss Army Knife for hardware/firmware developers. Besides the original text-based command prompt interface, the newer versions of Bus Pirate firmware have a Binary Mode interface that makes

Transferring URLs from Firefox to a Smartphone

Today, my friend Alex was trying to type in the URL for a webpage I had open on my PC into his Android phone. And I thought out loud that it would be a weekend project to write up a Firefox app to generate the QR Code of the URL for the current tab. Alex

Early research on Indian scripts rendering and input in Linux/X

When I was in junior year of college in 1998-99, I worked on a project at the Indian Institute of Information Technology in Hyderabad, India under Dr Rajeev Sangal and Dr Vineet Chaitanya. My programming partner, Naoshad Mehta, and I collaborated on adding support for Devanagari script in X under Linux through ‘rxvt’. We called