I2C 2004 Serial 20 x 4 LCD Module

This the larger version of our 16x4 LCD display. Its 24 character by 4 line display has a very clear and high contrast white text upon a blue background/backlight. It also includes a serial I2C/IIC adaptor board pre-soldered to the back of the LCD. This means it can be controlled with just 2 I2C serial data pins (SDA & SCL) and so requires far less digital IO pins when controlled from a microcontroller. In total the module only requires 4 wires including 5V power and GND. Contrast adjustment is also provided by the daughter board via a potentiometer. If you plan to use this with an Arduino board you can download a compatible library and example sketch from our support forum here. 

Product Code HCMODU0010
Features 76mm x 25.5mm LCD display, supports IIC / I2C
Application DIY Arduino based project. Allows remote panel mounting. Requires only 2 IO pins.

Notes:

These modules are currently supplied with a default I2C address of either 0x27 or 0x3F. To determine which version you have check the black I2C adaptor board on the underside of the module. If there a 3 sets of pads labelled A0, A1, & A2 then the default address will be 0x3F. If there are no pads the default address will be 0x27.

The module has a contrast adjustment pot on the underside of the display. This may require adjusting for the screen to display text correctly.

It is possible for the I2C daughter board to bend and come in contact with the LCD module if enough pressure is applied to it. Please ensure when the LCD is installed in your application that no external object is applying pressure to the back of the module.