Rob Janssen

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ESP8266 - NTP Client and Daylight Saving Time

I did a few experiments with the NTP server and ESP8266. Downloading time and converting to UTC is well described directly in demo examples. Conversion of time to the time zone and use of daylight saving time is hardly documented. In this example we will learn how to do this conversion.


GitHub is home to over 31 million developers working together to host and review code, manage projects, and build software together.

Computer Color is Broken

Thanks to for supporting this video!MinutePhysics is on Google+ - And facebook - twitter - @minutephysicsMinute Physics provides an energetic and entertaining view of old and new problems in physics -- all

Faster threshold queries with cache-sensitive scancount

Suppose that you are given 100 sorted arrays of integers. You can compute their union or their intersection. It is a common setup in data indexing: the integers might be unique identifiers.

.NET Debugging: 6 techniques you need in your arsenal

Debugging. It’s one of the most time-consuming ways of finding a bug. As a senior .NET developer, I can tell you that it’s best to avoid the necessity for debugging altogether by writing clean code that’s covered by automated tests.

Almost All Web Encryption Works Like This (SP Networks) - Computerphile

Substitution-permutation networks are the basis for almost all modern symmetric cryptography. Dr Mike Pound explains. video was filmed and edited by Sean Riley.Computer Science at the University of Nottingham: https://bit.l

Minify Your SVGs

I use Inkscape, a free and open-source vector graphics editor, to make my SVGs. In the beginning, I just saved my SVGs using the default Inkscape format, something called Inkscape SVG. That turned out to be not ideal… Wow. That’s 2 KB of markup for basically nothing.

Please, everyone, put your entire development environment in Github

Stop me if this sounds familiar... You want to get started with a new framework/runtime. So you install said framework/runtime.

SignalR: To Chat and Beyond - David Pine

If you're unfamiliar with the term "SignalR", don't stray away... this helpful technology could save your day. SignalR boasts real-time web functionality which enables server-side code to push content to clients instantly.In this talk, we'll start with a simple Chat application so that we understand

SVG Filters: 80s Font Text Effects

SVG filters are a very powerful, but a bit obscure tool. You can reference SVG filters from CSS and you can even combine multiple SVG filters. In this post I’ve used SVG filters and 80s fonts to create a few 80s text effects.

This Read-It-Later-list is just that, bookmarks of stuff I intend to read or have read. I do not necessarily agree with opinions or statements in the bookmarked articles.

This list is compiled from my Pocket list.