This standard blue backlight HD44780 LCD is great for your arduino projects. It supports 16 characters wide and 2 rows in white text on blue background. As the pin resources of Arduino microcontrollers is limited, your may be not able to use normal LCD shield after connected with a certain quantity of sensors or SD card. However, the I2C serial interface only take 2 wires to realize data display. If you already has I2C devices in your project, this LCD module actually cost no more resources at all.
USE for 1602 and 2004 LCD