This LCD can be used to display on-site information from a sensor or from data within an application.
For circuit, pin and interface specification see this datasheet
Usage
With the I²C-backpack on the display it is possible to interface with the LCD using 8-bits total. This means that the LCD must run in 4-bit mode, how this is accomplished is specified in the datasheet.
Extra information
The I²C-backpack has the following pinlayout
| I²C byte: | b7 | b6 | b5 | b4 | b3 | b2 | b1 | b0 |
| LCD Pins: | D7 | D6 | D5 | D4 | Backlight | E | Rw | Rs |
The Backlight pin directly controls the backlight so in order to keep the backlight on at all times, the backlight-bit should always contain a 1.
In order to clock an instruction into the registers on the display it is necessary to write a value twice on the I²C-bus. First writing the desired value with the E-bit high and then writing the same value again but with the E-bit low (see example below).
//Writing the value 0b00000001 (clear display) to the lcd with the backlight on
bus.write(0x0C); //0x0C <=> 0b00001100, upper 4 databits followed by backlight:on, E:on, Rw: off, Rs: off
bus.write(0x08); //0x08 <=> 0b00001000, upper 4 databits followed by backlight:on, E:off, Rw: off, Rs: off
bus.write(0x1C); //0x1C <=> 0b00011100, lower 4 databits followed by backlight:on, E:on, Rw: off, Rs: off
bus.write(0x18); //0x18 <=> 0b00011000, lower 4 databits followed by backlight:on, E:off, Rw: off, Rs: off
An example library for integrating with the display can be downloaded here
Sample code
console.log("Coming soon");