Almost a year has passed since I joined SRV for a two month internship. I've since forgotten some minor things, but there are important lessons I have learned that are still with me now.
If you use ROS move_base navigation stack with a depth point cloud (to reveal obstacles), you might run into the issue of the local costmap not getting cleared, resulting in lingering "fake" obstacles. This article talks about several possible solutions.
I've made a lot of quality-of-life adjustments to my Vim config, including colour scheme tweaks. One of such tweaks is changing the style of the active pane to make it more obvious - which is also the focus of this article.
Although I didn't post anything in the last few months, I've been working on some things, including several open source projects. In this post, I'm going to tell you about a few of them: Von, Rammy and Trek*.
While looking through my old coding projects, I found a couple of nice images and blog posts I wrote. This sparked some memories of how I first got into coding, so here's a short article about it.
I was adding bits and pieces to a small project of mine when I came across an interesting problem. I had a bunch of images that were aligned in one row and resized using `display: flex;`, so that all of them would have the same height.
I often have to read through piles of logs for different programs. Levels of sophistication and approaches to logging differ from program to program, but I think everyone would agree that there is a certain bare minimum of data your logs should contain to be useful.
Now that I'm enjoying my time as an exchange student at Caltech, I decided to look back at some of the great things that happened to me in UCL. This particular time I'll tell you about an effective way to shield your website from various exploits: by introducing more vulnerabilities.
One day I was looking through the MyAnimeList (MAL) account of mine and I've noticed that I've specified the start and finish for every single title I've watched. Now that isn't really impressive, but noone else using MAL actually does that.
After trying a bunch of existing static site generators, I decided that none of them were worthy of being used by me. And this, ladies and gentlemen, is precisely how Blitz was born.
If you've ever visited this website before October 2017, you might've seen some cool animations and a dynamic grid. It looked nice and was certainly fun to implement, but god was it not readable at all. I decided to fix that.
Today I've discovered another gem I've made back in August of 2015 (according to file timestamps). To give myself some closure, I'm going to immortalise Auth-chan in this blog post, and forget about her again.
It's a life-long dream of mine to invent a robust yet accessible music visualisation framework. I've tried a bunch of times in the past using Java but the solutions were very obviously imperfect: first of all, I had no idea what I was doing, and secondly, they were written in Java.
As you might've found out from a previous post of mine, in Summer of 2016 I spent a couple of weeks travelling around Japan. The previous post focused on the pictures I've taken with my camera, while this one has a bunch of panoramas I've taken during the trip using my phone.
In this article I'll be talking about how I tackled PostgreSQL migrations and database schema, pointing out useful tools and techniques. This is less of a tutorial and more of a description of one possible approach.
For my internship with Microsoft and UCL Institute of Child Health I had to work with PostgreSQL. My back-end was running on Node.js, so naturally I was interested in getting JSON formatted data out of Postgres whenever possible.
If you've ever had the pleasure of implementing a TCP client that would work in both the Unity editor (for development/debugging) and UWP on HoloLens (for production) you will know how painful the whole process is. Below you can find some info on how I tackled this problem.
In Summer 2017 I was working on an internship with Microsoft and UCL. I was put in charge of designing and developing the backend architecture for a reasonably big system. Continuous integration (CI) and deployment (CD) were a must, so I tried to automate as many things as possible.
Today was truly an amazing day. A video about the project I worked on, PEACH Reality, was featured on the official homepage of Microsoft HoloLens. It was a very interesting journey and I'm very thankful to Microsoft for helping us out and shooting this video about the project.
I've spent quite a lot of time developing a Microsoft HoloLens application during my 2nd year in UCL. In this post I'd like to outline several things that beginner HoloLens developers might find useful.
I spent 2 weeks travelling around Japan with a bunch of friends. It was an amazing experience and since I'm no wordsmith but I still wanted to document my trip, I ended up taking around a thousand and a half pictures of various places and events in Japan.
In this article I'll be expressing some thoughts and suggestions about the second COMP207P coursework, the one concerned with altering Java bytecode to implement things like constant folding and constant propagation.
This post is a short overview of my Linux dotfiles. It is somewhat outdated (as of May 2018).
I was elected as the treasurer of UCLU Anime Society , and I was also responsible for IT in our society. We created a Discord chat for our society, and people begun requesting various features. One of them was a bot that would somehow hide spoilers, which is how Discord Spoiler Bot was born.
I've been playing around with my new Ubuntu setup and I needed to get my keyboard playback and volume controls working to use Spotify efficiently. While this topic has been covered extensively on the web, the knowledge is currently spread among multiple websites.
During my 2nd year as a computer scientist at UCL I got a chance to work on an amazing compilers coursework. It was a part of COMP207P Compilers module and together with 2 of my teammates I was faced with a challenge to develop the compiler front-end for a fictitious Z language.
This page contains some links that I often share with my teammates (or they share with me) to help people get up to speed. I tried to add some shorts descriptions so you know what each link is about.
On December 5th, 2016, I got a chance to present the PEACH Reality project I've been working on to Steve Guggenheimer, who is (at the time of writing) the Corporate Vice President & Chief Evangelist at Microsoft.
As a part of System Engineering modules in my 2nd year of study in UCL I've been given a chance to work with Microsoft HoloLens and I became a part of the PEACH project. In this article I'll be talking about PEACH Reality itself and the things I've done during my team working on it.
I have recently put together a new rig, and it just so happened I had several LED strips leftover from one of my previous projects. Sadly, I couldn't get my hands on a monitor with built-in ambient lighting so I decided to build my own solution.
I was thinking about an easy way to simulate various APIs, and I was looking for a reusable solution that doesn't require much setup and if possible is platform/language independent.
I feel like implementation of higher order functions in C deserves more exposure that it currently has and this article is my attempt to contribute to this cause.
After years of rewriting the source code of this blog from scratch, a handful of domain name changes and numerous attempts of implementing something that would even remotely resemble a decent content management system I've finally overcome my NIH syndrome and decided to stick with Ghost
I took an interest in the concepts behind neural networks and machine learning. After doing some learning I tried to apply my newly acquired knowledge.
During my first year as a computer scientist at UCL I found myself using $\LaTeX$ quite a bit, and I have to be honest here - for someone with absolutely no prior knowledge in that area it wasn't an easy road and the learning curve was quite steep.
While doing some coursework for MATH6301 module for uni I decided that it takes too damn long to write out basic Gaussian elimination operations. Additionally, I felt like procrastinating and doing something that will involve using gulp which I have only recently discovered.
Some time around 2014 I was an avid reddit user (I mostly lurk nowadays) and I made quite a lot of themes for various subreddits. Below you can see some of the themes I have actually released. In reality, there were a bit more but I've never gotten a chance to complete them.
HyperBlocks is a WYSIWYG editor for sidebar content on Reddit. Its main aim is to allow moderators to easily organise the contents of sidebars in their subreddits in a neat and well-structured way without any prior knowledge of CSS or Markdown syntax.
I used to make various mods for Dota 2, and as you've probably guessed some of these mods were icon mods for various heroes. In this post you can see some of the icon sets I bothered to complete.
Back in 2014 I decided to develop a music visualiser, and since I was mostly working with Java at the time my choice fell on this very language. Sadly, I couldn't find any decent tutorials or examples of music visualiser implementation in Java, so I decided to make one myself.