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16  International / Portugues / Re: Controlando sua casa pela Internet! on: October 04, 2011, 06:25:45 pm
Bem bacana, parabéns pelo projeto... Estou tentando fazer +/- a mesma coisa para o meu apartamento(quando ficar pronto).

Meu maior problema é fazer caber tudo dentro das caixas de interruptor. Posso te perguntar como você colocou os relés dentro das caixas de interruptor de luz? Tipo, uma caixa com 2 interruptores(uma sala por exemplo para acender 2 tipos de luzes diferentes), os 2 relés couberam dentro da caixinha? Minha maior dôr de cabeça por enquanto é esta. Eu vou trocar os interruptores por push-button's e led's de estado(para saber se ta ligado ou desligado) e os relés vão ficar dentro das caixinhas. Se der para colocar fotos seria melhor.

Outra coisa, qual a distância +/- do seu maior fio do arduino para o relé? Você chegou a ter problemas de perda de voltagem ou interferência por causa do comprimento do cabo?

Em algum dos interruptores eu perdi um bom tempo acomodando os fios junto com os relés, mas entraram todos na marra mesmo.
O fio pode ser bem comprido... Eu comprei 15 m e lembro de ter testado antes de cortá-los e funcionou. Não medi a atenuação, mas sei que os 15m não foram suficientes pra parar de funcionar.

Nem me preocupei com a interferência porquê pus nenhum fio em paralelo com outro que passe muita corrente como por exemplo chuveiro elétrico e etc.
Mas mesmo assim não sei se o ruído dos 110V ia atrapalhar, já que pra alimentar o relé é um sinal contínuo. É uma boa coisa a se testar smiley
17  International / Portugues / Controlando sua casa pela Internet! on: October 04, 2011, 05:31:00 pm
Olá pessoal,

Fiz um projeto de automação residencial com Arduino e ficou bem bacana.

Assistam o vídeo:


Os detalhes do projeto podem ser encontrador aqui:
http://engenheirando.com/projetos/automacao/

Qualquer idéia, crítica, dúvida ou sugestão é muito bem vindo!

Abraços,
Maurício Rivello
18  Community / Exhibition / Gallery / Re: Microwave oven automated - the funny way. on: September 19, 2011, 08:49:26 am
Yeah!

I think the best method should be to add a lot of time (usually possible with only start button) and cancel after an arduino count.
It saves you from having to press a lot of numbers.

And Yes, Mario music!  smiley-grin
19  Community / Exhibition / Gallery / Microwave oven automated - the funny way. on: September 19, 2011, 03:38:20 am
Hi guys,

Thinking about how to automate my microwave, I concluded that there is no such way unless you remove the buttons panel and risk to screw it all...
So I chose the hard way, just for fun  smiley-lol  I liked so much the gadget I made that I decide to make a video.

Hope you enjoy it:



Cheers!

---

See my projects: http://www.youtube.com/MauricioRivello
20  Using Arduino / Installation & Troubleshooting / Re: Getting HOT, HOT, HOT... on: August 11, 2011, 10:09:33 am
02660,

What surface you let your Arduino above and which material is it made of?
21  Using Arduino / Installation & Troubleshooting / Re: Tx Rx leds always ON. PC doesn't detect Arduino on USB anymore. on: August 10, 2011, 08:10:21 pm
I hope there's one I can use in my University...  Let's see...
22  Using Arduino / Installation & Troubleshooting / Re: Tx Rx leds always ON. PC doesn't detect Arduino on USB anymore. on: August 10, 2011, 01:11:12 pm
Well,

I find out that the problem was with the circuit of the microcontroller I was testing. I used an xbee breakboard (that also has a FTDI) to continue the work and it stopped working either.

Unfortunately something wrong happened to that circuit and it cost me 2 FTDIs =/
23  Using Arduino / Installation & Troubleshooting / Tx Rx leds always ON. PC doesn't detect Arduino on USB anymore. on: August 10, 2011, 11:04:31 am
Well, my Arduino suddenly stopped working and now the leds Rx and Tx are always on. On USB or external power supply, they're always on.

When it happened I was doing a series of tests in a circuit, changing the Arduino supply from USB to 12V and sometimes both connected.
I've already connected both supplies together and anything never happened. And I've been using the 12V source for a while, it's trully 12V and never ever happened before.

There is an important detail:
I was using the board without the ATmega, just as a serial bridge to other microcontroller (a 3.3V one). I removed the Atmega328 and connected the Tx and Rx pins of the microcontroller to the board. I just made a circuit to lower the 5V from the FTDI to 3.3V.
It worked all the day but suddenly stopped working.

Sadly, I think the FTDI cooked, but I don't know why  smiley-cry

Help!  smiley-sad
24  Using Arduino / Sensors / Re: Guide to gyro and accelerometer with Arduino including Kalman filtering on: August 09, 2011, 02:32:58 am
Lauszus, I made use of your already functional Kalman Filter algorithm in my project: A self stabilizing platform.

You code worked great and you saved me a lot of time smiley-grin   Thank you

Here are the results:


I also posted the project in the Exhibition forum, in this post.

25  Community / Exhibition / Gallery / Re: Self balancing waiter tray. (or almost it) on: August 09, 2011, 02:20:15 am
Well it is your sketch, and your free to show what parts of it you wish.  smiley-wink


I hope you didn't get me wrong. I didn't show the rest because it was not my creation. (I adapted from Lauszus post, which adapted from another project)

You can see the sketch I started from by downloading the file "IMU6DOFVer3.zip" which I got from this post Guide to gyro and accelerometer with Arduino including Kalman filtering by Lauszus.

The only modifications I did was the mentioned above.

Cheers,   smiley
26  Community / Exhibition / Gallery / Re: Self balancing waiter tray. (or almost it) on: August 08, 2011, 02:28:44 pm
Well, but it's exactly that,

why to complicate things? It's just an union of a kalman filter, an IMU and servo motors.   smiley-lol
27  Community / Exhibition / Gallery / Re: Self balancing waiter tray. (or almost it) on: August 08, 2011, 12:06:55 am
Sure, the principle is the following:

It reads the inclination angle data given by the accelerometer and gyro, applies Kalman Filter to best predict the real inclination and write to the servo motors the inverse angle to compensate the inclination.

For my luck, I found an already made Kalman Filter algorithm for arduino in this post: http://arduino.cc/forum/index.php/topic,58048.msg417140.html#msg417140

Then I basically used the same code, just adapting it to write the angles to the servos:

// added in the beginning:
#include <Servo.h>
Servo servo1;
Servo servo2;

// added in setup:
  servo1.attach(6);
  servo2.attach(9);

// added in the end of loop() function:
  servo1.writeMicroseconds(1560-yAngle*9.55);
  servo2.writeMicroseconds(1510+xAngle*9.55);

Where 1560 and 1510 are the values corresponding to the center position of my servos and yAngle and xAngle varies from -90 to +90 and are scaled to fit the observed servo limits.

Any question, please comment!  smiley-mr-green
28  Community / Exhibition / Gallery / Self balancing waiter tray. (or almost it) on: August 07, 2011, 10:37:14 pm
Ok, in truth it's not exactly that, but that's the nickname it got.

It's a self-stabilizing platform. It doesn't matter the angle you put the lower platform in, the upper platform will ever stay in the horizontal position.

I used the method from this post, by Lauzsus, and adapted to my needs, including the servo motors.

Check it here:
29  Community / Exhibition / Gallery / Re: Homemade Wireless Motion Sensitive Controller (Like Wii) on: July 26, 2011, 07:18:16 pm
New version of the controller!  It now has analog sticks.

It's a prototype of an RC model controller.  See the video below:

30  Community / Exhibition / Gallery / Re: RC Quadrotor Helicopter Instructable on: July 06, 2011, 09:25:09 am
retrolefty,
Thanks for the advice, I will for sure do all the tests I can before start flying.   smiley-lol

Frank,
about my controller, I'm searching for a RC simulator to test on PC before flying the real Quad. Just if it looks acceptable I'll try for real.
My controller I'll do myself.. I'll add analog sticks and the "motion sensitive flying" will be just a mode of operation that I plan to be switchable while in flight, but the main control setup will be by the sticks.

Post the news when you have it!

Rivello
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