Building a Visual Bloom Filter with Raspberry Pi, Python and Unicorn Hat

Bloom filters are a probabilistic data structure that I’ve wanted to learn more about for a while. When I started reading up on them...

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Making a Bus Stop API with Cloudflare Workers

Public transport services can be great sources of live or near-live data to use when building out an application or trying some new front end technology. For years my usual go to API...

In JavaScript, Programming,

Raspberry Pi Coding with Rust: Traffic Lights

It’s time to produce yet another version of my original Raspberry Pi / Low Voltage Labs traffic lights Python article. This time, let’s try it with Rust - a compiled language with syn...

In Raspberry Pi, Technology, Rust,

Raspberry Pi Coding with .NET: Traffic Lights

It’s been a long time coming, but I finally decided to produce a C#/.NET version of my original Raspberry Pi / Low Voltage Labs traffic lights Python article (read here).

In Raspberry Pi, Technology, .NET, C#,

The M5Stack Core Ink Pomodoro Timer

The Pomodoro Technique is a time management method developed by Italian Francesco Cirillo in which a timer is used to break work into time periods separated by breaks. Each time peri...

In Arduino, M5Stack, C, IoT, Programming,

No, Maybe and Close Enough! Probabilistic Data Structures with Python

In this talk that I produced for Pycon USA 2021 I take a look at the Hyperloglog and Bloom Filter probabilistic data structures, using examples with the Python language and Redis with...

In Python, Redis, Programming,

Getting Started with Express - Building an API: Part 1

Express is a popular framework for Node.js, intended for use in building web applications and APIs. In this article and the accompanying video, I’ll show you how to get started with ...

In Node.js, JavaScript, Programming,

Buttons and LEDs with MicroPython for the Raspberry Pi Pico

Raspberry Pi recently released the Pico, their first microcontoller. This is a bit of a departure from their previous single board computers that cost a bit more, and run a full oper...

In Python, Raspberry Pi, IoT, Programming,

Dead or Alive - an Alexa Skill using Redis

I often find that I build an Alexa skill whenever I want to play around with an API. The voice interface is easy to get started with and I can create something without worrying about ...

In Node.js, JavaScript, Redis, Alexa, Programming,

Building the Lego Audi Quattro S1 Set

I received Lego’s kit of the 1985 Audi Sport Quattro S1 for my birthday recently, and decided to have a bit of fun building it by recording the process using my iPhone, then making a ...

In Lego, Hobbies,

Releasing a Dead or Alive Wikipedia Package on npm

A long time ago, I used to be a regular listener to Simon Mayo’s Radio 1 show. He ran a “Dead or Alive” segment where a listener would call in, and he’d challenge them to tell him wh...

In Node.js, JavaScript,