5 posts
I’ve been wanting to tinker with RGB LED matrix for a while, and finally was able to do so earlier this month. It was fun programming some effects, game of life etc. on a 8×8 matrix using Arduino. Here is a Christmas ornament that I programmed. It shows a color changing star followed by scrolling…
In early September, my son Kevin built a plotter using NXT, using the design from the book “The Unofficial LEGO MINDSTORMS NXT 2.0 Inventor’s Guide” by David Perdue & Laurens Velk. It is an amazing book with a lot of good ideas and designs. I was not content with the NXT 2.0 text and the…
Picking up from my last blog post, where we observed 255 = 15 x 17, I present to you some cool observations from the telescoping multiplicative series obtained from 2^n-1.
In CSS, when I need a shade of grey, I often use hex rgb like #cccccc, #eeeeee etc. (or in short form, #ccc, #eee) I posed myself a question today: If by using repeated hex notation, do we evenly divide the grey space from #000000 to #ffffff? What I found was very interesting. Let us…
Just realized I did not post any blog entries this whole year, so let me rush! I was casually looking for properties of the number 2014 this morning, and stumbled on to this neat property: http://oeis.org/A083074 – n^3 – n^2 – n – 1. When I looked up for n, a pleasant surprise! It was…
