Monday, April 22, 2013


Now I know what's wrong and I'm working on fixing it. Basically that means a format for my phone and then restoring apps after a clean os install. Easy but time consuming.
At least I have something to do while waiting, My hdd in my 7 years old laptop finally gave up today. It's unfortunately my main development machine. So I just finished recovering data, I got about 98% of it xD
So that means I'll need a new hdd along with building everything up from nothing. I have no idea which os files might be damaged :/
If I would use old ones, I'm afraid it'd be unstable.
Luckily Sunday night against Monday is my backup night so all of my projects are safe. But still.. It's a lot of work.
News on other fronts... I'm sick, probably common cold but it feels quite awful.
And I nearly got run over yesterday evening, I was walking home from mall and didn't notice a car(It's headlights were off, It's a law here to have them on at all times.). Luckily I jumped back and the car drove past me. It was scary none the less.

I'm still in the middle of designing a circuit board for a cc3000 TI WiFi module as part of my automated room system. It has a special package, It's like a qfn (quad flat no-leads) only that it's a rectangle not a square where one side has ten pins and the other seven. Also there are ground pins in corners and middle underside. So it'll be a double sided PCB that I'm going to make by hand. It'll be my second hand made circuit board so I have no idea how it'll come out. My first one was quite fine but I had a lot of space to work with. This is going to be more of a breakout board with all needed components on it.

I'll need another one for the system, as the main board. Right now it's just a mess of wires.
Sometime in the future I might consider replacing it with a cheap netbook/RasPi or something like that. But right now I think it'd be a little overkill. A remotely programmable microprocessor is more than enough for a hand full of sensors and relays. It's an ATxmega32A4, I'm sick of PICs xD

Sunday, April 21, 2013

Trouble with chroot

I tried running Kali Linux on my phone, Samsung Galaxy Note 2.
I have ran os inside of another one many times in the past and I have never had much trouble.
Even in Android, on my tablet(Asus Transformer Prime tf201).
This time I'm having trouble with loop devices.. well.. it's time to learn what chrooting is all about. I have so far only followed guides. I have a vague understanding of how it's supposed to work but nothing too detailed.
There is a guide I found:
But my phones software's really messed up from all the experimenting I've done. Time to dig deeper.

Friday, April 19, 2013

New wireless adapter

Yesterday I bought myself a new WiFi adapter. TL-WN722N
It has a detatchable external antenna and it came with a 4dBi Omni directional antenna.
But that's not the main reason I bought this one. The main reason was the chipset AR9271. It's an upgrade from the one I had - AR5523
The circuit board is 6,5cm by 2,2cm. And without the plugs it's 0,45cm thick.
That button is a QSS - quick secure setup.
This adapter is also designed to work as an AP.
It cost 17€. A nice deal, I guess. Worth the money at least.
My main goal is to make it work in Android.


This is my official blog. My name is Renee Undrits and I have gone by the name Esai since 2003. Before that I was knows as Yase. Unfortunately I didn't really like that so I renamed myself. At some places I'm also publicly known as Mortesar.
I'm quite big on security. For example I'm using different passwords nearly everywhere and on some places I'm rotating them. Also I really like multi-factor authentication and one time passwords because it lets me have an automatically rotating password without any manual intervention.
I love electronics. I like creating and coming up with all kinds of devices.
Also I deal a lot with computer hardware.
My main OS is Windows 8, but I am quite ok in Linux. I like sneaking into networks just for the sake of it. I have a rather sophisticated network at home with multiple ISPs and many computers. I'm using a network management software to control it all. It's really easy to set up and use. Just have to keep it updated :)
Basically I'm just a regular 19 year old who lives with parents and has interest in electronics instead of cars or bikes.
I got my first computer when I was 6 years old. Been on them ever since, constantly learning and improving skills.
I can easily read nearly every higher level programming language. It's harder to write but with a cheatsheet one can accomplish many feats...
My main languages are C++ and Java.
I have learnt everything I know about electronics by myself. Physics lessons at school were quite dull. Which usually meant that my marks were bad. But having good marks has never been my ambition. It was always about learning what I was interested in. I was rather good in Chemistry lessons.. untill all I had learnt just clicked into place and I felt I don't need to learn any further details. I've always been quite slow in math. I am really good at problem solving but I always see many possibilities ergo, it takes time to solve things. Also I'm more interested in the problem itself than in solving it. Of cource I get some things wrong while because I am used to doing things in my head rather than on paper - complex things get messed up. But that's what I have computers for :)
Most math problems are easily solved using simple formulas.
I'll try to tag my posts nicely so this would be an organised library. I was also considering a wiki but this blog is probably going to include details about my personal life in addition to what I created it for - my projects.
I'm from Estonia.