Robotics- where to start??

Posted: December 29, 2010 in Uncategorized

Hello people !!!

So, you thought as a new year resolution to pick up robotics 🙂 Cool!!!!  unless you are have been doing some (lots) of related work it’s going to be a little tough at the beginning, so here is the best forum I’ve found: — it has all you will need to start and build up to some pretty advanced robots! – might be the first and last robot forum you will use 🙂

Here are a few other useful  links: — lots of projects. — part shop with very good prices. — uk part shot with decent prices – but very reliable and prompt. Also the have a huge stock.


The idea behind this is trivial! I had a Corsair PC source gathering dust and thought of giving it a job:

It will be my new project supply. Well, this one is a very good all-rounder as it’s a 750W unit.

But most PC power sources will give you: +3.3, +5, +12 V at good amps(well above 5A). Mine will give 60A at 12v but that’s not a must, unless you want to start large motors or you need to charge a lot of batteries in the same time – 2/3 packs of NiMh at 4 or 5 amps each — the current output depends on the total power of the source.

But if you do need this large current please DO NOT use this breadboard method. A good way for large currents is to get the wires directly from the power rail and fit new plugs of your choice.

Here is a picture of the finished unit. Te green led is only to remind me to shut it off.

This is a very useful site, teaching you how to care for your LiPo and other batteries you have:

OK, I know it’s been a while but… I’m really really busy with a lot of projects.
I’ll post some here but in a while.

This post is about my greatest love in the silicon domain – no, I don’t refer to that wobbly stuff you put in boobs and such, but the one that governs you life! yeah, the stuff the integrated circuits are made of. . .

Here it is: THE one… THE only… THE P S O C i.e: programmable system on chip!

It’s just amazing. An MCU with hardware on it?!?! yeah, I know it’s been around for a while, but the got the PSOC 3 version out- 8051 Single Cycle processor and a lot of really nice hardware, current DAC, ADCs – quite a few to choose from 😀

Yeah, it does offer a lot of stuff! Fact, Cypress is working on the PSOC5 – still in silicon1 as we speak. That baby come with the ARM core and I tested it- it blows you out!

So, MCU and a lot of hardware in a chip smaller than a PIC… But… the best part is:
The documentation/help files of this baby are A M A Z I N G !!!!! from a first-time user point of view you get a working project in literary minutes

Cypress has a lot of other very nice stuff there, have a look:

OK…. this is it! Just listening and it makes you fell you are there! involved and between the instruments.
The specs are mind blowing(ultra-low and ultra-high :)) ) but it sounds just like high-end should sound!

This is the one – ta dam ta dammmm….. : LME 49713

Test it and you will not go to any othe IC ! !! !

This is a very interesting book about secret societies and alternative world history. Maybe these ideas are not for everybody but I’m sure whoever reads this book finds at least one interesting idea.

HI-FI Listening room

Posted: September 10, 2010 in Work in progress :D

Hy… It’s been quite a while but being away

from all the chaos is a good way to spend the summer 🙂

well… not ALL the chaos.

Because I am crazy about music and audio stuff I finished my listening room this summer.  It’s a 6x5x2.8 meter room dedicated 100% to my hi-fi passion. . . And this type of room needs a bit more than a sofa and a set of speakers – well, initially that’s all I had in it but the sound was just unbearable.

So…after a little talk to an acoustics specialist and a bunch of books and articles read I drew up some specs for what was needed:

– sound absorbers on front, side and rear wall.

– sound diffusers and dispersers.

– a few bass traps for testing.

The problem with all these is only one: price! very very very high price. So the cheapest way is to go DIY. . .

the absorbers were made from acoustic sponge and the synthetic fiber is added to liniarize the response at higher frequencies. There is a 5 cm airgap behind the lateral and 10cm gap behind the front ones.

The difference they make in sound is more than 100% 🙂 – My speakers are a diy high-end project and I know how they should sound. well, at first I thought there was something missing mid-range disconnected  or similar, unbearable sound. After the treatment and some minor tweaks everything was back to normal and the sound is almost perfect.

I still have to add some absorbers on the ceiling but this only come next Wednesday so pictures then.

usefull links:


Posted: August 9, 2010 in Work in progress :D
Tags: , ,

This is my latest summer hobby:

well… we are making a autonomous hovercraft. funny, I love driving and I’m designing a thing that drives itself – well… that’s the task. Good thing is that we will have an RC command over it soon and the fun begins 😀

will post picks soon.

YOU need hands! — are we loosing our grasp????

Posted: July 13, 2010 in Uncategorized

I recently came across a very very interesting and true article in the E&T Mag. (  IET’s magazine – :

It is about the way we tend to do less and less with our hands, less labour and more and more “thinking”. I’ve put thinking in brackets because filling up some forms and writing some boring reports requires far less actual thinking than mending a  faulty gearbox, cd-player, or whatever other device. And it’s so much more un-rewarding – picture this:

– So, how was your day?

-Well, I filled this forms, wrote those reports etc… How about you?

-Me, hmmm… Fixed the 6 speed semi-automatic gearbox on my car 🙂

– Wooooow, now that’s cool!

Well… You get the point, it’s a HUGE difference. Problem is that school and even universities tend to  teach you more and more how to fill forms – It’s amazing how much accent they put on how you write and arrange things and not what you actually write there- these can get frustrating from time to time  🙂

OK, to wrap things up, the book that says more about this is:

The Case for Working with Your Hands

Intuitive IC OP amps – Thomas M Frederiksen

This is one of the best books for the one who want to start with op-amps!

In case you do not know this little guys are the workhorse of the electronic industry!

Well, the problem with that book is that it is not easy to find, however in case you have the chance grab it! it’s worth every penny and it explains things in a very straight-forward engineering way 🙂

gotta go now, F1 is starting!