tag:blogger.com,1999:blog-335084982024-11-01T04:50:48.148-07:00FORM_FEED | going ahead ...Unknownnoreply@blogger.comBlogger39125tag:blogger.com,1999:blog-33508498.post-76428812504395612062015-07-03T21:10:00.003-07:002015-07-03T21:23:53.679-07:00

Adquiri a algumas semanas o Philips MCD 135. Tratasse de um microsystem stereo de 50W (25+25W). Cansado de tanto ouvir o som do computador via fones, optei pela suposta segurança que a marca poderia me trazer. Não queria nada potente, ou cheio de enfeites, detalhe comum nos equipamentos de som atuais. O aparelho aparenta um bonito design, simples, e limpo. Me atraiu aos olhos. Mesmo percebendo,

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-79839034230754674682014-03-04T22:02:00.001-08:002014-03-05T19:39:26.328-08:00

This project presents a alternative way to control the enable and disable of temporized wiper operation present in most cars, specially those who do not have some temporized wiper. It work by identification of extra command in the wash key of cars. Most of the ordinary cars (VW is bright on this, in Gol line in Brazil), came without the option to enable timed operation of the wiper in the

Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-33508498.post-54845370423779160742014-02-28T11:47:00.001-08:002014-02-28T11:47:15.992-08:00

Everything start from the reading of Fast Calculation of Inverse Square Root (FCISR) from codemaestro. The fast square root is a great history about computer graphics, games and computer industry. The clever use of mathematics and binary to solve hard problems. There are several articles that try to explain "easily" how the fast method works. But not all them are that easy to understand. All them

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-6208197075067913552013-10-05T23:33:00.002-07:002013-10-05T23:57:18.449-07:00

After some attempts to update my soundcard driver, under Windows Seven, I lost it. Looking at internet, I discover that that was possible on special circumstances, when the EEprom of the card, which contains special configuration data (MODEL, but I think that maybe vendor) get lost by incorrect data being written by the drivers working with bad behavior. A way to fix this, as said on some sites,

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-77450783334643867322013-02-02T23:09:00.003-08:002013-02-02T23:09:31.525-08:00

Already one year in master deegre at UFRGS. I'm sharing the link to my page at UFRGS : http://inf.ufrgs.br/~hfkfilho/ I opt for a simple layout, with some minor effects of CSS3 and Javascript. I'll try keep it updated. This blog too.

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-75337844511514140072011-11-14T12:09:00.000-08:002011-11-14T12:09:27.602-08:00

Lets use GetFontData and GetGlyphOutline WinAPI to get vector data and apply some effect over it. http://www.antigrain.com/research/font_rasterization/ http://msdn.microsoft.com/en-us/library/dd144885%28v=vs.85%29.aspx

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-66123505512396251712011-11-04T12:42:00.000-07:002011-11-04T12:42:16.063-07:00

Pesquisa de efeitos alcançaveis através de BLEND levou a isto: Design de efeitos legais para photoshop - para serem convertidos para sistemas dinamicos com linhas e blend. http://theroxor.com/2010/03/04/photoshop-tutorials-perfect-for-creating-abstract-wallpapers/ Efeitos e interfaces 3D - conceitos, apenas imagens das implementações. Uso de matematica para gerar conteudo dinamico. http://

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-17606358001940287042011-10-23T19:14:00.000-07:002011-11-24T05:54:39.184-08:00

2 links para o mundo da engenharia reversa on-die IC reverse engineering - diversas informações e analises do 4004, o pai do microprocessador. Tambem varios outros estudos de caso feitos sob circuitos reais. mame Decap engenharia reversa de jogos da plataforma mame (presente em muitos fliperamas antigos). Li num blog que o Mega Drive foi em muito baseado na arquitetura dessa plataforma.

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-87198585843131398882011-08-08T19:41:00.000-07:002011-08-08T19:41:18.685-07:00

Chegou a plataforma de desenvolvimento Launch Pad da TI. Em apenas 7 dias. Quase inacreditavel, vindo de outro pais (U.S.). Primeiro Objetivo: implementar rotina de controle de velocidade na plataforma. Com 16  bits certamente conseguirei ultrapassar a barreira do 7KHz que o PIC me impos (pela falta de funções como ADC)! E essa obra de arte da tecnologia consegue executar instruções em

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-46670360255482123382011-06-18T20:05:00.000-07:002011-06-18T20:05:08.961-07:00

To terminando meu TC e os testes sobre o metodo PRM. Abaixo algumas imagens dos roadmaps gerados pela minha versão do algoritmo. Testei a geração de 128 a 256K nodos de configurações. Neste momento, testo as rotinas de interconexão entre nodos: Center Line Check, Line Check, rotate-at-s e incremental. Ainda irei implementar a versão binaria. Estou utilizando o WinBGI para exibição. Pra

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-4957172231072239002010-12-17T09:31:00.000-08:002010-12-17T09:31:21.104-08:00

I was looking for a tool that allow me to control multiple computer from just one key/mouse. I know, for long time external key/mouse/display swicthers; they are very nice, but I really want a software to do the job, possible over TCP/IP that control the direction of input data between several computer. I was almost sure that will find some already done ver internet. And I found! 2 options!

Unknownnoreply@blogger.com1tag:blogger.com,1999:blog-33508498.post-22164605911180616452010-10-14T05:51:00.000-07:002010-11-12T04:02:47.139-08:00

UPDATES IN RED at: 12-11-2010 Reading HackaDay, just can't let to present my debounce routine. Make my interpretation of it at 2007 with PIC programming. I start build my debounce routine with a state machine approach. This way the routine can be solid as stone.(I think least) And was much more easier to accomplish the right behavior that I wait for. More, my implementation doesn't force

Unknownnoreply@blogger.com7tag:blogger.com,1999:blog-33508498.post-84607421712632998182010-09-24T19:09:00.000-07:002010-09-27T13:56:17.578-07:00

Finaly, the fisrt picture of my Plotter/Future Engraver. Some considerations about builting with MDF. As Zoltar say to me, I shouldn't had been use MDF. It is a little bit bad. Also, I am using just one traction axis for the base, that cause to much leisure on edges of mechanics. Also, IGUS is to much imprecise. But it work for fun! I am using old epson drivers and Rima/Emilia motors, that work

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-71449472461660269652010-08-31T18:45:00.000-07:002010-08-31T18:45:02.816-07:00

The first test with the plotter/engraver have just been done! Next days, few pictures and videos of project!

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-17683054819414208742010-02-20T15:58:00.000-08:002010-02-20T16:00:03.710-08:00

Mudando um pouco o foco das postagens... Esse video postado pelo crash_computer é sem duvida engraçado. Replico ele aqui. Minha visão é igualmente a dele. Twitter suck. Changing a little bit the post, this video linked by crash-computer is really fun. I repost it here. My opinion about is the same! Twitter suck.

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-41442677307022762662010-02-13T14:58:00.000-08:002010-02-15T08:37:58.019-08:00

Abaixo a imagem da nova versao do engraver. Como bonus de utilizar uma ferramenta de desenho CAD, é possivel avaliar diversos problemas antes de realmente colocar a mão na massa. Ainda, é possivel pensar melhor em como fazer as coisas com poucos recursos, otimizando para reduzir o trabalho final! Acredito que o projeto atual está muito mais proxima da versao final. A mesa sabe foi colocada "

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-5764049878958441762010-02-10T18:04:00.000-08:002010-02-10T18:06:35.929-08:00

O programa para efetuar desenhos no modo plotter está em estagio avançado. Desenvolvido em DialogBox para Windows com Visual C 6. Em breve converterei o mesmo para SDI, permitindo assim mais facilidade de trabalho. Estou utilizando fortemente C++ orientado a objetos, o que vem facilitando muito o trabalho. Tambem o MFC da Microsoft, que auxilia bastante e evita muitos contratempos com

Unknownnoreply@blogger.com3tag:blogger.com,1999:blog-33508498.post-82883203819243988252010-01-23T16:02:00.000-08:002010-01-23T16:02:55.406-08:00

We proud presents to you... Hungarian Rhapsody No. 2 played by stepper motor Details: 48 steps - 4 microsteps song played 2 octave high single tempo for all track - the tempo has not been found inside MIDI. However the players get right?! 7Khz Max frequency.. but stepper dont work direcly on this speed - need sinuodal rise of speed. need work on this yet.

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-84062632663802049362010-01-19T06:43:00.000-08:002011-03-20T21:43:15.802-07:00

Here the pic of hardware to suport sound generation.  Too a screenshort of progream that control all.  And here other song played by steppers' motors! Pachelbel's Canon The motors are running in 4 microsteps. But the right one are with bad noise. Aslso the song are being played 3 octaves high, for better sound. See too Hungarian Rapsody nr2 

Unknownnoreply@blogger.com11tag:blogger.com,1999:blog-33508498.post-23237542312290546922010-01-18T10:14:00.000-08:002010-01-18T10:56:17.361-08:00

I end the PIC program to control speed and a Windows interface to control and test the PIC program. Soon as possible i will post the block diagram of PIC software. Bellow a video of singer steppers made by my. It are playing BigCity.mid song in 2 voices! The bushless are better to make noise. Using 2 motors for old Epson printers. Using the driver from board of one old Epson to control both

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-48208818490135549522010-01-02T06:46:00.000-08:002011-08-06T21:02:01.714-07:00

Since then we talk about accurate control multiple axis, we should remember that all axis speed get together based in pitagoras equation in simple orthogonal system (XYZ system). Based in simple 3 axis in orthogonal system (90°), each one running at 30mm/sec, the final speed can be calculed as SRQT(X^2+Y^2+Z^2) and must be aprox. 51,96 mm/s. That is just a exemple... but show that the final speed

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-30376745253094965402009-12-30T08:09:00.000-08:002010-01-01T17:30:25.146-08:00

Now I will start to present my ideas and project about build a home CNC (or engraver?) I define it bringing the reality of parts more easyly avaliable here, in my city and country; I live in  inner city in southen Brasil; a little different from USA and Europe, where is easy to find allthings; here is hard to find some kinds of parts; so I am adapting as possible the parts, as all

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-58025979057973675812009-12-28T08:35:00.000-08:002009-12-28T09:12:26.696-08:00

Manchester decoding receive routines from michochip datasheet (presented for keeloq system) is a great and easy way to start work with remote control systems. The first part of this fix are in here. The document TB045 of microchip offer code for everyone that own microchip controllers to use, and guide to the basics to Manchester decoding , through the implementation of a state machine. I

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-81324177671521409832009-09-17T11:52:00.000-07:002009-09-17T11:54:21.617-07:00

Isso está sendo muito utilizado nas empresas na atualidade.Vale a pena ler.Lembra-me aquele ditado.Manda quem pode, obedece quem tem "juizo" (medo).http://akitaonrails.com/2009/09/12/off-topic-a-argumenta--o-atrav-s-da-intimida--o

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-33508498.post-3959183803470790202009-06-13T16:26:00.000-07:002009-06-14T08:38:36.757-07:00

Tenho deparado com noticias de todos os lados sobre o novo "hipe" da industria de TI.A TI VerdeMas é realmente verde? Será que muitos não estão entendendo mal isto e tomando atitudes que nao são verdes?Uma premissa da TI verde que muitos falam e acredito precisar de uma analize maior é sobre a virtualização de servidores.A moda agora é virtualizar tudo. Pessoalmente, acredito que é para

Unknownnoreply@blogger.com1