Wavlink WN519N2 Wi-Fi Repeater

To be able to configure to Wavlink WN519N2 Wi-Fi Repeater, you have to:

  • Plug in the electricity,
  • Press reset.
  • Connect to the Wavlink wifi that is available.
  • Enter in http://ap-setup.com/ (or
  • Enter default password “admin”
  • Enter into the “Repeater” wizard
  • Select the Wifi you want to connect and enter the password and the name of the repeater.
  • Connect to this new wifi net.
  • Select “Wifi” to set-up the network.
  • Change the password of your network
  • Enter into the http://ap-setup.com/ again and set-up a new password for the admin.
  • Done!

Kindle Direct Publishing (KDP)

How do I get my book published?

I have written a book, and I did not know how to publish it.

I was looking for an editor and an on-line editor and other alternatives like that. Finally I found Kindle Direct Publishing, and I started to work on it.

I did all in 5 days, ISBN number, correct the format, create a cover, set a price and request 5 copies for checking how they look like in the printed version.

The cost and the price

On Kindle you get 35% of the price of the kindle edition, on the printed book it’s the same.

The cost of the printed book varies depending on the amount of pages, the quality of the paper and if it has colors or just black/white. To me it was 2,5€.

You order, they print it

The traditional editors I have asked asked for 80%, so I would only take 20%. I understand this percentage, because they take the risk of printing a volume that they finally cannot sell.

Amazon does in a different way, they reduce this risk to zero, they just print what is ordered.

You can request my book in Australia, and you will have it at home in 24 hours (you can decide on which markets you want to publish it).

They just changed the rules of the game.

Everybody knows bookstores are in trouble, but editors are in trouble too

This is basically because they way Amazon sells and produce the books:

  • Minimizes the inventory,
  • the need of space,
  • the time to collect the book and send it to the buyer,
  • the risk of not selling XX copies of printed books.

Is there any other editor in the world doing publishing in the same way?

WordPress scans

To have a minimum of security on wordpress the minimum is to keep the environment up to date (majority of updates are security updates), you can scan how secure it is with this library:


Or you can direcly go to a place like this and check it on-line:


There are so many spaces like this that offer short data in the free version and they try to sell you other versions.

Trading tools

There are thousand tools in the market to trade and perform backtesting.

Trading view (https://www.tradingview.com)

It’s very social, they promote people to share their strategies, their findings etc. The difficult thing is to find people who really have the right criteria (this takes a lot of time).

Other detail I love is that you can add indicators from the fundamental analysis.

Meta Trader (download it)

There are so many scripts published on this platform. As a stand alone solution, when you want to draw lines, save tests… it’s more accurate that a web solution.


Talaia, Open PPM

This product came to my inbox: http://www.talaia-openppm.com

  1. It’s aligned with PMI.
  2. You can integrate it with Redmine.
  3. It does not store documents, you need to use a separate repository.
  4. It does not cover the scheduling capabilities as MS-Project.
  5. Covers the needs of so many roles in an organization, not just Project Managers:
  • Portfolio Manager.
  • Functional Manager
  • Resource Manager
  • Investment manager
  • Team member
  • Sponsor
  • PMO

Anecdote: the first version of Talaia was a R&D project founded by Spanish I+D Plan Avanza 2.



Date formats in excel

Just for my memory,

Just in USA the date format is mm/dd/yyyy, the rest of the world uses dd/mm/yyyy. Anyway…

I have excels where I have both formats inherited from links, so I cannot change the source data.

The solution:

=IF(ISNUMBER(Q202);Q202;DATE(RIGHT(Q202;4);LEFT(Q202;FIND(“/”;Q202)-1);MID(Q202;FIND( “/”;Q202 )+1;2)))


Ability to code is a skill that today almost everybody recognize as a very valuable skill that soon will be something that will be mandatory.

Develop this skill as soon as possible is something interesting for those kids that likes computers, tablets and maths. To have the right environment to introduce programming, a IDE an how to interact with it is something key to break the initial barriers of knowledge. In addition, kids don’t work, they play (which is the right thing to do), so it has to be a “game” environment to develop.

How? with Scractch.


Whiteout mail

Awareness about security is always something challenging, and have good habits in this Whiteout.ioarea is important. Mail encryption was always a technical complex issue, but now it seems to be easy for users. The answer is this German company Whiteout.io


Once you install it, you enter your user and generate a PGP key, the first hurdle you find is the way to differentiate between “0” and “O”.

After the installation some useful e-mails are sent to explain you how the public key and the private key use.


Decrypting is slow for the modern life, to open an light e-mail it takes around 1 or 2 seconds, not bad to me.

You will see a “” when the message is encrypted.

The organization of same e-mails in a same line (created by gmail) is not available in Whiteout, so you will see all e-mails from the past ordered in a way that does not make sense to you. This should be improved.

Contacts: if you want to have the contact keys of other users in Whiteout.io you have to import their keys. This will enable encrypted e-mails.

Things that works in a similar way to gmail: Folders,