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1  Using Arduino / Displays / Re: Pervasive Displays [no power displays - e-paper] on: April 01, 2013, 02:21:52 pm
For temperature I did that:
Quote
#include "Wire.h"
#define address 0x49
#define delayC 1000
#define baudrate 9600

void setup()
{
  Wire.begin();
  Serial.begin(baudrate);
}

void loop()
{
  Serial.print("temperature in Celsius: ");
  int temperature;
  Wire.beginTransmission(address);


  Wire.write(0x00);

  Wire.requestFrom(address, 1);
  if (Wire.available())
   {
      temperature = Wire.read();
      Serial.println(temperature);
   }
  else
  {
    Serial.println("---");
  }
  Wire.endTransmission();
//end the transmission

  delay(delayC);
}
And it worked, the temperature was around 24°C in a classroom.

But afterwards I used the code from repaper and it doesn't need any temperature.

For my matrix problem, I already got a NFC shield, because I'm sending data with an Android Application by the NFC transmission to Arduino, and I'm trying to display those information. And if I get a new shield, I will have problems with my chip selects.
Do you think there are no other possibilities?
Is it possible to write on an .xbm file?
2  Using Arduino / Displays / Re: Pervasive Displays [no power displays - e-paper] on: March 30, 2013, 11:10:01 am
Hi,

I have a new problem. I did find a way to change the display on my 2.7 Inch E-Paper Device.
But for my project, I need to change frequently the display.

My problem is:
  • The matrix is therefore a 176 lines for 33 columns.
               -> It is actually a matrix of hexadecimals in a .xbm file for the moment
Quote
#define test_width 264
#define test_height 176
static char Matrix_bits[] =
{
0x00, 0x00, 0xFF, 0x10, ....
0x00, 0x00, 0x1F, 0xAA, ....
}

  • It has to be a dynamic matrix because I would like to change some part of the matrix.

Have you an idea how I could do this?

I know that if i create a matrix directly on the code as:
Quote
byte Matrix[176] [33]
Arduino is not capable because the Matrix is too wide.

So I thought about creating a matrix with the Flash Library such as:
Quote
FLASH_TABLE(byte, 33,
   {0x00, 0x00, 0xEE, 0x77 ...},
   {0x00, 0x00, 0xEE, 0x77 ...},
   {0x00, 0x00, 0xEE, 0x77 ...},



);

But I cannot change the values in this matrix...

I also thought about changing the matrix in the .xbm file, or create a new one every time the code is running.. But I don't know if it is actually possible.

As anyone ever did something like that with such a wide matrix on Arduino?

If I'm not clear with my demand, please ask, I really need some help.

Thanks
3  Using Arduino / Displays / Re: Pervasive Displays [no power displays - e-paper] on: March 11, 2013, 05:42:01 am
Hi,

I succeeded to change the display on my EA device  smiley
4  Using Arduino / Displays / Re: Pervasive Displays [no power displays - e-paper] on: March 04, 2013, 10:44:48 am
Actually I don't know why the code of Re-paper does not work on my device. I think the code called intro should work, since I think it doesn't use the extra pins of the extension board.
Did anyone tried it on his device?
5  Using Arduino / Displays / Re: Pervasive Displays [no power displays - e-paper] on: March 02, 2013, 08:19:26 am
I tried it on my EA device, it doesn't work. I don't really understand why. Maybe it is because of a problem with the wire, that I don't connect properly.

Or maybe it's a problem with the code (or both ^^ ) . But I noticed that the re-paper code, does not use temperature pin to change the display of the screen. And by looking at the data sheet of the 2.7" E paper, I see that to change the display, and input display data, we need to use the temperature sensor.
Maybe the extra pins of the extension board of the re paper code are used to simplify the code and not use the temperature sensor. I don't really know.

I think that the repaper needs to be modified to work on the device. I only tested the code called intro, that is supposed to display some image and some text.  Did somebody manage to make this code work without the extension board?
6  Using Arduino / Displays / Re: Pervasive Displays [no power displays - e-paper] on: February 18, 2013, 05:07:46 am
Oh great, thank you very much for your help!!
7  Using Arduino / Displays / Re: Pervasive Displays [no power displays - e-paper] on: February 16, 2013, 02:05:51 pm
Thank you! I'll try that, but I don't really get how the pins match.
8  Community / Gigs and Collaborations / EA E-Ink Display on: February 15, 2013, 09:20:53 am
Hi,

I am currently working on a project to display a QR Code on an E-Paper Display from EA (2.7") with Arduino UNO.
I found some code with the new EA Board:  http://repaper.org/code.html
But i just wanted to make it work without an EA Board, just with the EA module.
I don't get how it works with the different pins from the EA module.

Does anybody have an idea on how I should do that?
9  Using Arduino / Displays / Re: Pervasive Displays [no power displays - e-paper] on: February 15, 2013, 09:02:10 am
Does it mean that I have to put the flash memory off the code for just an EA module?
10  Using Arduino / Displays / Re: Pervasive Displays [no power displays - e-paper] on: February 15, 2013, 08:29:27 am
Oh ok, thanks.
I have an Arduino UNO and an E-Paper Display from EA (2.7 inch) and i'm trying to make it work with the Pins.
I don't know what FLASH_CS and EPD_CS correspond to.
11  Using Arduino / Displays / Re: Pervasive Displays [no power displays - e-paper] on: February 15, 2013, 07:51:34 am
Oliver, is the code from github only available on Arduino Leonardo?
12  Using Arduino / Displays / Re: E-Paper Display on: February 15, 2013, 07:50:25 am
Thank you, I'll try to find something that can help me with that
13  Using Arduino / Displays / Re: E-Paper Display on: February 15, 2013, 04:00:57 am
Anybody can help me?
14  Using Arduino / Displays / Re: E-Paper Display on: February 07, 2013, 12:10:31 pm
I have signed the NDA, so I've got both the code without NDA & the one released after NDA. I've also go the datasheet for the COG Driver.
It's a long long code and I can't find a way to translate it into an Arduino way.

Do you know how I could do that?
15  Using Arduino / Displays / E-Paper Display on: February 07, 2013, 09:43:52 am
Hi,

I am working with my team, for the first time on Arduino.
My project is to display on an E-Paper Display (2.7 Inch E-Paper Display from Embedded Artists). I've been reading a lot of things on Arduino and E-Paper Displays, but I can't figure out a way to display something on my screen.
I know that there are things already ready for an LCD Display, but not much on E-Papers.
I've been working on that for several weeks, and I don't find much for now.

Do anyone have some advice to give me to display something?


Thanks  smiley
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