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Brewing Cider December 24, 2009

Posted by GuySoft in Crictor, diy, Hamakor, Uncategorized.
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My cider (we call it Chateau la Sheffer)

Hey all,

During the semester break, I brewed alcoholic Cider (not to mix with apple juice, which is no-alcoholic). My cider has 7.2% alcohol.

Although some readers might think that making alcohol out of plain apple juice might involve black magic, its actually quite simple. The only thing it really takes is time – about 3 months total to start drinking, but if you wait 5 months, you will get something that tastes much better. Its quite fun, and one can create unique flavors.
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Introducing the Bumble-b and using it to control a LED matrix October 8, 2009

Posted by GuySoft in Crictor, diy, Electronics, Hamakor, ITU, open source, programming.
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The Bumble-b

The Bumble-b

Hi all,

The past week I have been playing around with my new Bumble-b, as I mentioned in my last post. Basically what I did with it is control an LED matrix. After doing that I made it in to a USB Device! Thanks to the simple library LUFA. Now I can use a simple echo > /dev/ttyACM0 command to send a text message to the display. Meaning that I have now /dev/matrix!

In this post I hope to explain how to use the Bumble-b, a  programmable USB chip, including its own built in programmer, for just $20. I would also like to encourage people here in Israel to start playing with this, since its cheap and easy to order way to get started with amateur electronics.

Here is a quick introduction video (followed by a detail post):

bumble-bWhat is the Bumble-b?

The bumble-b is a USB programmable AVR chip with a programmer built in to it (called a breakout board). It is an AVR chip, meaning that its based on something that is widely used (the model is at90usb162). Moreover, since it has a USB connector right on it , this makes the creation of USB devices really simple. But not only USB devices alone.
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Astrophotography Using Canon Camera’s Hack Development Kit August 16, 2009

Posted by GuySoft in Astronomy, Crictor, diy, Hamakor, ITU, linux, open source, programming.
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10 comments

CHDK booting

Hi all,

I am going to explain here how I managed to use the Cannon open source hack development kit , known as CHDK, to photograph stars and even create neat movies of the stars motion.

It all started this Monday, I was lucky to see that there is going to be Perseids meteor shower, a day in advance. So I had time getting the code ready before it was too late. I thought I would go somewhere next to Jerusalem and photograph, but in the end, friends of mine (Shy and Anna) from the Israeli Astronomy Association, which I am part of, told me they are going down south to the dessert, far away from light pollution, to take count of the meteors for the IMO. So I joined him, and my data is also available.

Before all the technical stuff, here is a video I made that shows you what this all comes to:

Now back to CHDK, and how this was done.

What is CHDK? And how do I install it?

CHDK is a firmware addon for Cannon powershot digital cameras. It supports most of them, mine is a simple powershot A590, costs to date about 700 NIS. Moreover, since its an addon, it will not void warranty, and can’t damage your camera. It has a lot of features (including games and an e-book reader!).

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A message to MAKE magazine February 21, 2008

Posted by GuySoft in diy, Hamakor, podcast.
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Bre Pettis, was the MAKE magazine Podcast maker, the famous DIY magazine.

A few months ago, aired a podcast about making sympathy dolls. I started to make a doll for my girlfriend, when I stumbled on a secret message, that made me do this:

I got in contact with Bre over Jabber (Gtalk) he did like the 555 chip addon, however he also told me that he isn’t working for MAKE anymore :( .

A little disappointing, however, I still have a cool doll….

How to build “cantenna”, a wave guide antenna out of a coffee can November 27, 2007

Posted by GuySoft in cantenna, Crictor, diy, Hamakor, linux, open source, wifi, wireless.
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23 comments

This is really a translation of a post I wrote in Hebrew out of Linmagazine.

Here is my own DIY guide to build a waveguide antenna. This antenna will dramatically boost your wireless connection to a specific direction, enabling connectivity to great distances.

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