Idea of the day – Camera companion

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After a long period without any idea commit, I propose to imagine a Digital Camera companion, compatible with the main reflex system canon and nikon. This system would be connected to the camera using the USB channel or eventually a dongle type on usb connector, or eventually a wifi memory card system. This is for the camera side. On a tablet side, all the taken photo would be received and transform. The idea is to add GPS location and easily apply filter like in instagram. This can also be use to make panorama automatically or create HDR.

The choice of an USB direct connection could help to automatically configure the camera like for HDR.

As all the idea in this category, feel free to comment, and develop, if you become rich with it … don’t forget to help me paying my house !

PirateBox upgrade to Forban

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I’m looking to upgrade my two pirate box to test the mesh network forban between the two. Apparently, this will slow down the device as the TP Link small devices are not so powerful, but i like the idea to be able to create mesh network between piratebox. In my point of view it is the right way to make this project real.

I actually have my two piratebox configured in version 0.5, i’ll firstly update them to the latest version, then add the Forban tool following Matthias’s materials.

I’ll upgrade my TP Link Mr3020 and TP Link MR3040.

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Idea of the day – automatic highway payment

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The purpose to this idea is to save time at highway toll. Actually if you want to save time (at least in France) you need to have a specific and rented device detecting you and billing you. The current technology could allow the highway company to detect you car registration plate with a camera. This ID could be linked with a registration you have made online of different car you own and a credit card + a phone number.

Car would pass through the toll, be billed and this could be confirmed by an SMS sent to the user.

As a consequence, the system could be faster, not attached with a monthly payment and easier to manage (no hard device to move car to car, return, maintain …)

As all the idea in this category, feel free to comment, and develop, if you become rich with it … don’t forget to help me paying my house !

Search strings in a binary file

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A simple way to get strings from a binary file on Linux, use the od command with -S option.

od -S 6 file.bin

will print all the strings with at least 6 printable chars

 

Understand Oracle Fusion Application topology

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Oracle fusion application is based on a large group of components like weblogic servers, databases, identity modules and so one. I’ll try in this article to explain how they are used and for what purpose.

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WordPress can’t establish connection with DB

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I just got an error message coming from wordpress saying on the index page that the connection to the database is not possible. I expected a problem in the connection chain but the real issue was related to a corrupted table in the database.

This as been fixed by repairing this table. So take care of the messages that can be wrong in the index page. The message in the admin index page was better concerning this point.

Restoring a grub2 bootloader broken

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After I had to change a hard drive for another my linux Opensuse 12.2 grub bootloader was broken, here are some of the learning of this debugging phase :

– Restore grub to the new disk

– Start kernel manually

– Fix hard drive references

At the end, the process to recreate the bootloader and particularly to recreate the initrd file was broken, and I assume bugged. To really make it works, I had to update the whole Linux and again at the end of the process the booloader based on grub2 was impossible to execute. The solution was to select Grub (version 1) and it worked. I assume it was possible before update the whole distribution to use yast2 booloader and choose grub instead of grub2.

When you get a message like waiting for device … to apear at boot, it may be because of the initrd does not contain the right modules to access the hard drive. It appears when the motherboard has been changed.

This article is mostly notes taken during this debugging phase … so do not consider it as an howto but as a list of command and possible way to debug this kind of issues…

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