pcdunio MongoDB Cluster
This years X-mas project was to build a little ARM based cluster of pcdunio (Raspberry Pie 2+ like) boards running a MongoDB 3.0 NoSQL database for under $200. Hardware The base board was a pcDunio3...
View ArticleNoether’s Theorem
Noether’s Theorem is a central result in theoretical physics that expresses the one-to-one correspondence between symmetries and the conservation laws. My daughter wrote about Emmy Noether and her...
View ArticleMagnetic Pendulum Calligraphy (Idea)
Could magnetic pendulums be combined with calligraphy? Yes, I think they can, and might produce very interesting results. The question was sparked by my FB post of a magnetic pendulum fractal and the...
View ArticleMagnetic Pendulum Calligraphy (v1)
My first implementation of a magnetic pendulum that can draw something. I constructed a magnetic pendulum with movable brush – a simple v1 hack based on my idea for a physics based calligrapher – and...
View ArticleMagnetic Pendulum Calligraphy (v2)
The improved second generation magnetic pendulum calligrapher with electronic remote-control brush. After having so much fun with the v1 version of the “drawing pendulum”, I decided to improve and...
View ArticlePiTFT on Windows IoT Core
Interfacing a Raspberry PI 2 with an Adafruit PiTFT 2.2 HAT mini TFT display – the Windows IoT way! As a Christmas project, I tried to bring up Windows IoT core on my RP2 and then implement a “driver”...
View ArticleeSkin 4 Sensors
System design and custom software to support “Eskin 4 the Visually Impaired” to be presented at ISEA, the International Symposium of Electronic Art in Durban, South Africa, 23rd –30th of June 2018....
View ArticleDSLR Astrophotography
A visit to a nearby observatory sparked my interest in Astrophotography – taking pictures of the heavens. This is a rewarding hobby even for suburbanites but requires some equipment and expertise. With...
View ArticleCool Music
Small collection of links to music I find interesting and like. The Egg – Electric CityClip 1: https://www.youtube.com/watch?v=fFriy4h5cdkClip 2: https://www.youtube.com/watch?v=QOHuG7QWc8gClip 3:...
View ArticleCustom Linux on WD MyCloud EX2 via WSL2
The goal of this project was to replace the insecure operating system on a WD MyCloud EX2 NAS device with a newer Linux Kernel and a custom boot installation that enables minimally SSH and allows...
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