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Showing posts from 2015

תצוגה ייחודית לסטטיסטיקות ישראליות

אני ואחי יצרנו תצוגה מעניינת לראות אירועים יום יומיים ישראלים . כמה כסף עיריית תל-אביב עושה מדוחות על חניות ? - כמה כסף מרוויח בנק הפועלים בשניה ? - כל כמה זמן נולד ילד במדינה ? / מישהו מתגייס ? / כמה שקיות במבה מיוצרות בשנייה ? ... ועוד ועוד. צריך לראות כדי להבין: תדירות ישראלית

Building a drawing robot in Geekcon 2015

On the last GeekCon 2015 , me and my brother built a drawing robot. Can draw on a large scale pages, basically working the same way Logo (Computer Language) Turtle is working. Can go forward, backward and turn around. Can raise the pen or lower it in order to start drawing. Here are some pictures, explanations and code. We used the Arduino Uno (actually Funduino Uno compatible) over a Maze car  rack bought in Deal Extreme . Using the Keyes L298 driver for the DC motors and a Servo motor using the original Servo.h library kit from Arduino. Some external references helping us to go on:

Google Updated Their Logo but Ruined the Google Calendar Updating Favicon

On first of September (2015) a week ago, Google updated their logo, to a new one. They also updated the Favicon, but on the way looks like they have ruined the Google Calendar Updating Favicon. Before the update, the Google Calendar Favicon was updating and showing today date (day of the month) - Very cool. Now it's just another tab with the same Google favicon logo as any other tab or window.  Now - Bad: Before - Good:

Looks like a bug in Google Charts for aria-label="A tabular representation of the data in the chart."

Looks like a bug in Google Charts Library . It have a new feature adding a div with aria-label =" A tabular representation of the data in the chart. " that holds the data of your graph in a table. It is discussed here:!topic/google-visualization-api/k2Kk772j2no But for me it created a bug in the css causing the whole screen to be very wide with a bottom scroll. After some investigations with Firebug I noticed the aria-label =" A tabular representation of the data in the chart. " have a style="position: absolute; left: -10000px" causing this endless horizontal scroll. The solution for me was to add in the css a " display:none ": .small_graph svg + div {display:none;}

Eclipse Crashing for No Good Reason - A few tips might help

Eclipse is currently a necessary evil. I'm using it only because I haven't found anything better yet. It is big, bloated, heavy, slow with many hidden windows and hard to configure. But, it have many plugins, like PHP ( PDT ), it works with Android and Java of course, have a decent intellisense and auto-complete. Eclipse is probably the most common IDE for open-source environment. Yet, the biggest problem, and I am not the only one having it, is that eclipse suddenly crashes, open the splash screen and then close with no good reason. How to determine why does eclipse crashes and how to fix it ? Here is a list of things that I have done in order to overcome it. Yet, I still don't know how to debug why eclipse crash. Reinstall: First of all, let's remove eclipse installation: sudo apt-get autoremove eclipse* --purge Remove eclipse plugins: rm -rf  /usr/lib/eclipse Delete the workspace: rm -rf ./workspace Delete each project and proje