title: No I2C Devices Found in atmega644 with i2cLCD
body: <p>I am beginner I wanted to determine the I2C address I connect my arduino644 to I2C LCD like the pin below</p>
  
  <pre><code>I2C LCD(BLUE)        |       ATMEGA644
  
  GND                  |       GND
  
  5V                   |       5V
  
  SDA                  |       A4
  
  SCL                  |       A5
  </code></pre>
  
  <p>I used the I2C Scanner Code in example list but it gives me output NO I2C DEVICE
  any idea thank you</p>