4002 Character LCD Modules with I2C Interface
Now available from PMD Way are these high-quality I2C interface-compatible LCD modules from PMD Way. Two rows of forty characters, with green text on a yellow background or white on blue. They are both 3.3V and 5V tolerant and perfect for your Arduino, Raspberry Pi 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 thre 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.
- 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)