2004 Character LCD Modules with I2C Interface

Now available from PMD Way are these time-saving HD44780-compatible LCD modules from PMD Way. Four rows of twenty characters, with green text on a yellow background or white on blue. They are 5V tolerant and perfect for your Arduino or other projects. 

These LCDs have been fitted with the adaptor and a PCF8574 I2C backpack interface, allowing you to use these on the I2C bus without any soldering - just plug and play to the four wires on the backpack.

We may send one of two versions of this device - the difference is the controller IC. If you have the PCF8574T. the default I2C bus address is 0x27. If you have the PCF8574AT the default I2C bus address is 0x3F.

A jumper on the back controls power to the backlight, and a contrast potentiometer is also fitted. No soldering is required, modules are fully assembled.

Click here for packs of five. Free delivery, worldwide.

More information:

• An Arduino tutorial
• Alternate Arduino library which allows for custom LCD characters (Thanks Geoff!)
• Raspberry Pi tutorial with the same I/O expander. 
• PCF8574 datasheet (.pdf)