Author Archives: e8johan

What does that Pin Do?

Posted on November 1, 2012 by e8johan

The Arduino Shield List is a nice little collection of pin-outs for various Arduino shields. They’ve collected 280+ shields at the time of writing. For each shield, you will find a short summary alongside an illustration highlighting the used pins. … Continue reading →

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Dead bugs

Posted on October 25, 2012 by e8johan

I did not know it, but soldering a circuit without a PCB is apparently called creating a “dead bug”. The ICs being soldered are placed on their backs, legs pointing upwards, like a dead bug. Over at the dangerous prototypes … Continue reading →

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Raspberry Pi R2 Details

Posted on October 23, 2012 by e8johan

The people over at the Raspberry Pi foundations do not rest. Having doubled the provided memory without affecting the price, they go on to deliver the schematics for the second revision of the boards. A great platform keeps improving, pushing … Continue reading →

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License to Entertain

Posted on October 19, 2012 by e8johan

A while back, the Raspberry Pi foundation announced that they are selling additional codecs in their webstore. The Pi comes with H264 support out of the box, but MPEG2 and VC-1 (some Microsoft thingie) are nice to have as well. … Continue reading →

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Fatter Pies

Posted on October 15, 2012 by e8johan

The Raspberry Pi model B now ships with 512MB of RAM. Opens the system to even more possibilities.

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The Next Level of Home 3D Printing

Posted on October 15, 2012 by e8johan

The hobbyist 3D printer prints using a thin stream of molten plasting. By adding layer upon layer, a 3D object is created. The big boys don’t do this because of problems with resolution, overhangs, etc. Now, the people at formlabs … Continue reading →

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Step-by-step: PCB-less Arduino

Posted on October 8, 2012 by e8johan

Over at the Arduino site, there is a page on building an Arduino clone on a breadboard. This trick can be further simplified by using the internal oscillator. You lose some speed, but also some complexity.

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Portable 3D Printing

Posted on October 5, 2012 by e8johan

The Ben Heck Show had an episode on creating a portable 3D printer. The idea is to fit an entire 3D printer into a suitcase for bringing to fairs and such. The video is a nice guide to the bits … Continue reading →

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Self-printed Retro Joystick

Posted on October 1, 2012 by e8johan

Over at Thingiverse, the Dutchman known as srepmub has published a great looking 3D printable retro joystick. The instructions contains printable parts, PCB and build instructions. As a later entry, he shows the results of two days (!) of polishing. … Continue reading →

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Electronics from Ebay

Posted on September 28, 2012 by e8johan

For the hobbyist, one great source of low cost electronic gizmos is ebay. There is a whole range of sellers, often based in Hong Kong, offering small mounted PCB for less than cost of the components bought in small volumes. … Continue reading →

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