Hydroponic farming is a method of growing crops without soil, with the main benefits of environmental and nutrient control, water conservation, and reduction of labor. This technique relies on a number of technologies that the principles of automation can be applied in order to improve yield and consistency. In this…
Broadband services are a wonderful innovation of our time, using multiple frequency bands (hence the name) to carry signals over wires (us...
At this point, most developers use Git as a tool for collaboration. We have our rote-learned commands to pull, commit, and push. And of course, there's that one coworker who knows a bit more about Git…
I’ve always been attracted to chording keyboards in theory, but I lack whatever childhood musical training is required to wrap my fingers around them. So I made something else: an arpeggio keyboard. Peggi is an eight-key keyboard that fits on the back of your phone. While chording keyboards require you to press…
The Yamaha DX7 digital synthesizer was released in 1983 and became "one of the most important advances in the history of modern popular mu...
The promise of a decentralized and trustless future is forever just that: a promise, and in the future.
...though it's not the flagship borrow checking that's at fault. What I noticed, and would like to share with you today, is that the exhaustiveness checking performed by the Rust compiler on match patterns is a superset of the SAT problem.…
Turns out printing doesn't have to be hard
The original EGA art for Indiana Jones and the Last Crusade was done by Mike Ebert , Steve Purcell , and Martin Cameron . It was originally released in July 1989. The VGA version, first released on the japanese FM Towns computer in 1990, adds Jim McLeod and James Dollar to the credits.
Every mathematician worthy of the name has experienced … the state of lucid exaltation in which one thought succeeds another as if miraculously… this feeling may last for hours at a tim…
A lot of smart college students end up with the idea that “solving hard technical problems” is the best thing they can do with their life—probably because that’s the only thing they’ve ever been rewarded for so far.
Hey everyone, it's been a while. Hope you're all doing well. Today I want to show you some more watch related stuff I've been working on.
In shell scripting you sometimes come across comparisons where each value is prefixed with "x". Here are some examples from GitHub:
What tacit knowledge is, and why it is the most interesting topic in the study of expertise today.
According to Wired, Signal is adding support for the cryptocurrency MobileCoin, “a form of digital cash designed to work efficiently on mobile devices while protecting users’ privacy and even their anonymity.” Moxie Marlinspike, the creator of Signal and CEO of the nonprofit that runs it, describes the new payments…
As software developers, we're always learning new things; it's practically the whole gig! If we can learn to quickly pick up new languages/frameworks/tools, we'll become so much more effective at our job. It's sort of a superpower.
There’s been a lot of hand-wringing over The Technical Interview lately. Many people realize that inverting a binary tree on a whiteboard has basically zero correlation to whether or not someone is actually a good software developer. The most effective programming test anyone’s come up with is still Fizzbuzz. One…
I am grumpy. As my very clever wife summarised, I hate when designers prioritise their æsthetic preferences over my usability needs. I tried sharing a website using Google Chrome for Android. I hit the share button, and a panel popped-up from the bottom of the screen. Hmmm. It didn't have the share destination that I…
I am very proud to say that after about 10 months of work I finished writing my Emacs Lisp book . If you haven’t heard of it yet, it’s called “Hacking your way around in Emacs” and it is an intermediate-level textbook on Emacs Lisp, showing a lot of useful things on about 100 pages.
You can make a DIY air purifier in 30s. To test if it works, I generated smoke, and measured how well it removes tiny particles.
In the early 2000s social media sites like Facebook and Twitter weren’t commonplace yet. Even text messages, at ten cents each, were something to be rationed. For many teenagers the primary means of communication outside school was AOL Instant Messenger (AIM). So when it was announced in October that they were…
I made a Bluetooth trackball in which all the electronics are inside the ball. The ball is the entire trackball. Here it is in action: I...
A list of defensive CSS techniques to avoid potential future issues
Have you ever wondered what's inside your computer's power supply? The task of a PC power supply is to convert the power from the wall (1...
