Show Posts
Pages: 1 ... 3 4 [5] 6 7 ... 25
61  Forum 2005-2010 (read only) / Development / Re: Arduino Realtime Audio Processing on: February 16, 2009, 05:39:03 pm
Nice project, indeed, and very well documented. Will be really useful for some audio projects. Thx
62  Forum 2005-2010 (read only) / Development / Re: language advice for newbie programmer on: June 14, 2008, 05:49:49 pm
Do you have any skills i programming? Bcause if you're just starting and don't know anything yet, you'd better start with the basis : algorithmy. It's not a language, just the "science" behind every language : how to structure your code, how the various conditionnal statements works, etc... If you can't understand the difference between a while and a if loop, start by this ^^

When I was in what is equivalent of a college in the US (Licence Pro, in France), I was one of the few having ever done algorithmy, and it really helped me achieving functionnal & optimized code (Actionscript, at that time).
63  Forum 2005-2010 (read only) / Development / Re: Arduino the RTOS? on: April 15, 2007, 09:35:31 am
Has the freeRTOS implementation of a RTOS for uc have been ported to the ATmega168 and by extension to the arduino?
I think i saw an ATmega168 version, but I doubt it's useable on the arduino with the bootloader. I'm not much into thoses technical specs but I think there's not enough memory to run it without getting rid of the bootloader

but i'm surely wrong ^^
64  Forum 2005-2010 (read only) / Development / Re: Newbie question - webcam on: June 14, 2008, 05:42:14 pm
You could eventually poll the CCD regularly and retrieve the data for one full frame via I2C or whatever, store those datas on an external EEPROM or SDcard ... then take your time for processing the data. Once you finished processing, restart the procedure.
You'll have a loosy framerate, and you still have to find the right webcam with the good chip, but may be done eventually, don't you think?
65  Forum 2005-2010 (read only) / Development / Re: Newbie question - webcam on: June 14, 2008, 12:20:36 am
I just unscrewed my Logitech webcam, to see if I can find the chip behind the ccd & it's datasheet, check if there's some kind of I2C or whatever, but all I can find was the CCD, a bunch of SMD resitors & caps et a crystal. I took the lens off and it seems that the CCD & the microcontroller are embedded in the same chip, and no markings.
My advice : try to find the cheapest webcam possible, maybe you'll be able to find the chip & learn a bit more about it, don't buy any thing with Logitech or Microsoft written on it ^^
66  Forum 2005-2010 (read only) / Development / Re: Newbie question - webcam on: June 13, 2008, 11:55:55 am
I'm not sure the arduino has enough processing power to do that. Maybe it does ^^
Maybe you could check this thread (in french the start, but it goes in english)

You can process what is coming from an optical mouse sensor, and it's fairly "easy" and fast, maybe a camera is possible, but I don't think it'll be at 30fps ^^
67  Forum 2005-2010 (read only) / Development / Re: Seeeduino - an unofficial update of Diecimila on: September 04, 2008, 10:27:46 am
1. Align the header with 2.54mm grid.
Related discussions:
Place an second row of header align to standard grid. So it will be compatible to existing shield and your proto board. Both of the headers will be soldered, or either of them.

Is it possible to do ? What solution do you have ? Headers with a 1.27mm pitchs ?

3. Possibility for USB HID support.
Great ! Worth trying, I think.

Maybe you could include the side switch instead of the jumper for selecting between USB and external power.
Maybe the same switch for the auto-reset.

Nice update to the board family, in any case ^^
68  Forum 2005-2010 (read only) / Français / Re: [APL] Voir au travers d'une souris on: June 13, 2008, 11:54:26 am

69  Forum 2005-2010 (read only) / Français / Re: [APL] Voir au travers d'une souris on: June 11, 2008, 10:51:16 pm
Martijn, Benoit, do you think it's possible to unsolder the sensor from it's PCB ? My PCB is the same as the one in the pictures above, and I wonder what I have to keep beside the sensor. Certainly the Xtal but what else? I'd like to use it on some kind of "robot"...
70  Forum 2005-2010 (read only) / Français / Re: [APL] Voir au travers d'une souris on: June 09, 2008, 09:37:10 pm
Hi martijn
I looked quickly on the 2610 datasheet and it seems that they share the same kind of memory usage with the 2083. The registers adresses are different though.
You can definitely add my little modifications to the lib, yeah ^^
I tried to add a pixelData method returning an 18x18 array but I'm bad with C. I can return something but it's definitely not an array. Would you help me? I have a sketch working for reading the pixeldata register, I just don't understand how I can turn this into a library ^^.

void EnvoiImage()
  byte val;
  EcritureRegistre (0x40, 0x01);
  EcritureRegistre (0x48, 0x00);
  for (int i=0; i<325; i++)
    val = LectureRegistre(0x48);
    if (i!=0) {                            // First read will return 0, we don't want it
      Serial.print(val&63, DEC); // Cleans the value, so that you don't have the Start_of_Frame & Valid_data bits
  Serial.println ();
  EcritureRegistre (0x40, 0x00);

I added some datasheets to the zip archive.

Thanks ^^

PS : Thanks again ^^
71  Forum 2005-2010 (read only) / Français / Re: [APL] Voir au travers d'une souris on: June 08, 2008, 09:10:50 pm
@Glopp76 : the problem is that the data stored on the chips are not stored on the same registers. you have to change a few things. If you want to use Martijn library, you can use the files I modified, I changed the registers. You have also to edit the code in your sketch in order to use ADNS2083 instead of ADNS2051. That's all. If you want to use Benoit's sketch, then you have to modify a lot of things as a lot of values are not stored with the same scheme.
72  Forum 2005-2010 (read only) / Français / Re: [APL] Voir au travers d'une souris on: June 08, 2008, 07:29:44 pm
Hi mthe

I just tested it and it seems to work. For the ADNS-2083, I changed the registers as follow
#define Delta_Y                  0x42
#define Delta_X                  0x43
But I didn't find an equivalent in the datasheet for the Motion Status Register. There's a Status register at 0x41, but it's not quite the
same as for the ADNS-2051 so I'm not sure it works with your library... :/
Anyway, I can retrieve dX and dY, the most important ^^
Thanks to you and to Benoit

You can download the modified files for the 2083 here >

73  Forum 2005-2010 (read only) / Français / Re: [APL] Voir au travers d'une souris on: June 08, 2008, 09:36:38 am
About the S2083 chip, I found the datasheet on avagotech website. It's a SDNS2083.

I'll give it a try soon, but if anyone makes some progress with this chip, it will be reaaaal good stuff ^^
74  Forum 2005-2010 (read only) / Français / Circuit imprimé pas cher on: September 04, 2008, 07:00:17 am
Hello tout le monde
Juste pour info, j'ai trouvé un site 100% français, un petit artisan, qui fait de la réalisation de circuits imprimés. Je n'ai pas encore commandé chez eux, mais ça semble interessant (je viens de leur passer un coup de téléphone, je suis assez confiant)

Pour info, le shield Arduinome couterait dans les 15 euros frais de port compris. Ils font du double face mais pas les vias par contre, on peut s'en sortir avec la bonne vieille méthode du "fait passer un fil et soude des deux cotés" ^^

Voilà voilà, pour ceux que ça interesse...
75  Forum 2005-2010 (read only) / Français / Re: kodak controller on: March 26, 2009, 03:11:09 am
si les projecteurs de diapo gerent le signal DMX, aucun problème
Mais j'en doute ^^
Il faudrait essayer de trouver le protocole qui passe par ces fameuses prises a 12 broches afin de le reimplementer avec l"arduino

as-tu une reference de projecteur ?
Pages: 1 ... 3 4 [5] 6 7 ... 25