Mads Chr. Olesen

Modern TVs are very poorly suited for kids. They require using complicated remotes or mobile phones, and navigating apps that continually try to lure you into watching something else than you intended to. The usual scenario ends up with the kid feeling disempowered and asking an adult to put something on. That something ends up […]

As I’ve written about previously I have had the Olimex A20-OLinuXino-LIME2 in service for quite some time. But one thing that I’ve been curious about is why it’s only available with 1Gb of RAM, when the A20 chip itself can support up to 2Gb? Could it be upgraded to 2Gb RAM by a simple swap […]

This is a non-rational quest to make a cheap chinese LED lamp safe to use.

Der findes rigtig meget åbent data om det danske energi system hos Energi Data Service, f.x. spot prisen på elektricitet og CO2 prognoser per kWh. Det er dog overordentligt svært at finde den samlede pris man betaler som forbruger per kWh, pga. det uigennemskuelige datasæt over tariffer og priser. I frustration kom udbruddet: “Giv mig […]

I had a need for an extra-extra long multi-cutter blade, so we made one in Hal9k. Until proven otherwise, we hereby claim it to be the world’s longest, at about 30 cm from rotation point to the cutting edge. Converting Starlock-MAX to Starlock-Plus Initially I thought I could get away with just a 80mm long […]

Denne badeværelseslampe er udgået af produktion, og pga. monteringen og at man ofte har mere end én er det noget træls at skulle udskifte – det giver ihvertfald en del skrot uden grund. Heldigvis er konstruktionen super simpel: det er udelukkende en LED driver (230V AC til 24V DC) og en LED. Lad os starte […]

First part of this series is here, covering the reverse engineering of the DRTV Chromecast App. I wanted the physical appearance to be extremely minimalistic, with slight references to various cubes from videogames. Because it is a remote control, it of course has to be wireless and battery-powered. The box is lasercut from 6 mm […]

I want to build a physical giant red button, that when pressed instantly starts a children’s TV-show, in my case Fantus on DRTV using a Chromecast. The first part of the build is figuring out how to remotely start a specific video on a Chromecast. Initially I thought this would be pretty simple to do […]

DIY mounting and creation of solid wood shelves in an alcove with no visible mounting hardware.

The Wemos D1 Mini is an ESP8266 based prototyping board with WiFi connectivity and countless applications. It becomes even more useful in battery-powered applications, where with the proper setup, it can run low-powered for months at a time — or only hours if done incorrectly. This is the quick and dirty guide to running a […]