Inverse Kinematics: how to move a robotic arm (and why this is harder than it seems)

So you have built a robotic arm? Great, let's write some Go to make it serve your five o'clock tea. Sounds simple enough. Or is it?

A Little Story about Amazon ECS, systemd, and Chaos Monkey

Perceptrons - the most basic form of a neural network

Artificial Neural Networks have gained attention during the recent years, driven by advances in deep learning. But what is an Artificial Neural Network and what is it made of? Meet the perceptron.

Message Queues Part 2: The PubSub Protocol

This is the second (and, for the time being, the last) article about messaging and Mangos. After doing first steps with the Pair protocol, we now look into a slightly more complex protocol, the Publisher-Subscriber (or PubSub) protocol.

Simplicity: A Prerequisite for Reliability

The senate bus problem

The next problem in “The Little Book of Semaphores” is called “the senate bus problem” and reads as follows: Riders come to a bus stop and wait for a bus. When the bus arrives, all the waiting riders invoke boardBus, but anyone who arrives while the bus i...

Message Queues, or how you can make processes talk to each other

Consider two processes that need to exchange commands and data. You want to connect them in a way that is straightforward, efficient, and reliable. How would you do that? Enter Message Queues.

The room party problem

The author of “The Little Book of Semaphores” wrote this week’s problem inspired by real life events at Colby College. The problem’s statement is the following: The following synchronization constraints apply to students and the Dean of Students: Any num...

Fast Feedback Is Everything

The child care problem

Next problem in line in the the little Go book of semaphores series is about caring for children. It comes from the book “Operating Systems and Middleware: Supporting Controlled Interaction” by Max Hailperin (problem 4.6). It reads as follows: State licensing rules r...