Arduino Wire.h library: how to communicate with an LCD? I am having an Arduino Uno and a C2042A LCD with I2C shield on it. Because the VirtualWire library does not work for me. I tried only the wire library but it's still not working:

My code:

#include &lt;Wire.h&gt;

void setup() {
  Wire.begin(0x63);
}

void loop() {
  Wire.write(4);
}


I just read on this website which commands you have to use but it doesn't do anything. What is my fault, how to solve it?
SOLVED!

I forgot to write beginTransmission(). Here's my code:

#include &lt;Wire.h&gt;

void setup() {
  Wire.begin(0x63);
}

void loop() {    
  Wire.beginTransmission(0x63);
  Wire.write(byte(0x00));
  Wire.write("Temperatur:");
  Wire.endTransmission();
}