Archive for the ‘Work in progress :D’ Category

RC Dyno

Posted: March 17, 2011 in Work in progress :D


This seems like a very good way to learn more about your RC car and develop some tuning skills. Will start building one soon and update the post!


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.

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 ๐Ÿ™‚

well… not ALL the chaos.

Because I am crazy about music and audio stuff I finished my listening room this summer. ย 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% ๐Ÿ™‚ – 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 ย 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: ย


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 ๐Ÿ˜€

will post picks soon.