For temperature I did that:
#include "Wire.h"
#define address 0x49
#define delayC 1000
#define baudrate 9600void 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 transmissiondelay(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?