Remarks from DIY projects

DIY, the Maker Movement, Quantified Self, Arduino, Wiring

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Two Years into Self–Learning Arabic

ابتثجحخدذرزسشصضطظعغفقكلمنـهوي In February 2016 I set a goal to learn Modern Standard Arabic as a consumer, i.e., to gain the ability to read and listen in Arabic, with no intention to speak or write. I enjoy to learn things by myself, and despite plenty of recommendations on the web which advised me to find a teacher, I learn Arabic unsupervised....

Eight Predictions for the World in 2030

I discovered an article named 8 predictions for the world in 2030 and here I am about to comment on the statements in the article. The ultimate goal of this blogpost written now in 2017 is to return to it in 2030, thus giving myself sort of feedback how wrong or right was my mental model in 2017. I. All products will have become services. This...

Experiences with X009 Device (Cheap Spy SIM GPRS GPS Camera)

Previous month I played with unbranded Chinese MMS spy camera, this time I tested similar device branded as X009. The principle is the same for both devices – you send SMS message to the device and receive photo in MMS message (and there are plenty other features like microphone and video).The X009 device can be found on eBay as “Mini SIM GPRS Tracker...

Experiences with Cheap MMS Spy Camera

In the past few years I created and tested several web–cams for outdoor use. Here is summary of all my experiments (in Slovak). Recently I discovered on eBay a very cheap device named GPRS Positioning MMS Video Taking Locator Video band GSM spy camera. In terms of features the device is similar to trail hunting cameras, but the price is awesome,...

Six Months of Creative Leisure Time (in Slovak)

If a man walk in the woods for love of them half of each day, he is in danger of being regarded as a loafer; but if he spends his whole day as a speculator, shearing off those woods and making earth bald before her time, he is esteemed an industrious and enterprising citizen. – H. D. Thoreau V júni roku 2014 som sa rozhodol, že vo februári 2015...

Yet Another Wireless Music Visualizer

We use Arduino and bluetooth to wirelessly visualize music being played on PC. Arduino and its accessories are running from battery. In order to eliminate noise we analyze the music stream on PC and send frequency spectrum information to arduino via bluetooth. Here is also some music playing in background and the box is open: Comparison of Existing...

Share Messages via Kindle on Fridge

Amazon Kindle is well suited to be upcycled as a fridge messaging display due to its low power consumption. The main idea is explained here and below are all the technical details: All the source code below is in this repository. Step 1: Send Email to First you need to create a new email account for your fridge kindle on...

Borneo Deforestation Timeline Cut from Paper

Island Borneo is subject of massive deforestation during past years. I took this data poster of Borneo deforestation timeline and cut it from paper. SVG template is here:

3D Paper Model of Pitcairn Island

Pitcairn island is famous for being inhabitated by descendants of the HMS Bounty mutiny. Map of the island compared to paper model detail, both oriented towards north: The larger tringular cut on the blue (sea) paper sheet is direction towards north. Model scale is 1:70 000. SVG template is here:

3D Paper Model of Shrinking Aral Sea

During the last 60 years Aral Sea has almost completely dryed up. This shrinking is considered to be “one of the planet’s worst environmental disasters”. I took the surface outlines of Aral Sea from past 60 years and combined them together into a single 3D paper cube: SVG template is here:

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