Creating a more secure Raspberry PI

19 January, 2015

Having a PI connected is better with a openSSL server…

Solar jet fuel has been created for the first time

3 May, 2014

Solar jet fuel has been created for the first time

A Sci-Fy dream coming true…

Use Synology as git server from xcode

26 April, 2014

if you have a Synology Nas ( you can use it for a private local git repository.

I found a very useful tutorial here.

Fix Maverikcs “One or more items in… can’t be changed because they are in use” error

12 April, 2014

If you’re getting  “One or more items in… can’t be changed because they are in use” error copying from external disk here the easy fix: 

launch terminal and use the following command:

xattr -d <filename>


xattr -d Kitesurf-Mavericks.mp4



Configure Rasberry PI SSL for free

26 March, 2014

First step: create your own certification authority private key:

openssl genrsa -out myPersonalCA.key 2048

Second step: create your own certification authority:

openssl req -x509 -new -key myPersonalCA.key -out myPersonalCA.cer -days 730

Now you can sign certificates.
With this certificate, let’s proceed to generate our SSL certificate.


Third step: create your own SSL private key:

openssl genrsa -out myCertificate.key 2048


Fourth step: create the personal SSL request:

openssl req -new -out myCertificate.req -key myCertificate.key

Fifth step: create the personal SSL certificate

openssl x509 -req -in myCertificate.req -out myCertificate.cer -CAkey myPersonalCA.key

-CA myPersonalCA.cer -days 365 -CAcreateserial -CAserial serial


the output file myCertificate.cer and myCertificate.key should be used in your apache configuration.



Reverse Engineering the Estimote

29 January, 2014


An interesting reading

Originally posted on Make::


Back in June last year—at WWDC—Apple quietly announced iBeacon. It didn’t even get a mention in the keynote, appearing in just a single slide about “…some other features in the SDK.” But for hardware people it was actually one of the most prominent features of Apple’s latest OS release, and my Twitter feed exploded. People are always looking for new levers to enable them to do new things.

I’m not really going to talk here about the—interesting and somewhat telling—split between Google, which initially relied on NFC technology and only recently have grudgingly added Bluetooth LE support to Android, and Apple, which avoided NFC and concentrated on finding alternatives utilizing both Wi-Fi and Bluetooth LE—for instance by rolling out AirDrop as an alternative to Google’s now shuttered Bump file-sharing service. While I think the choice of those competing technologies actually tells us a lot about the two companies—that’s another…

View original 3,169 more words

App Trends 2014

15 January, 2014

App Trends 2014

App Design trends for 2014


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