LCD1602

The LCD1602 driver is used to drive LCD1602 display modules.

Where to buy

https://www.aliexpress.com/item/1005006100081942.html

How to wire

The module has 16 pins.

• VSS - GND
• VDD - +5V
• V0 - >500 ohm resistor, connected to GND
• RS - Any available GPIO pin
• RW - GND
• E - Any available GPIO pin
• D0 - Leave disconnected
• D1 - Leave disconnected
• D2 - Leave disconnected
• D3 - Leave disconnected
• D4 - Any available GPIO pin
• D5 - Any available GPIO pin
• D6 - Any available GPIO pin
• D7 - Any available GPIO pin
• A - >500 ohm resistor, connected to +5V
• K - GND

Using the driver

Instantiate the driver using the static make() function, passing a reference to each pin.

use DanJohnson95\Pinout\Facades\PinService;
use DanJohnson95\Pinout\Drivers\LCD1602;

$driver = LCD1602::make(
    readSelect: PinService::pin(13), // RS pin
    enable: PinService::pin(14), // E pin
    data4: PinService::pin(15),
    data5: PinService::pin(16),
    data6: PinService::pin(17),
    data7: PinService::pin(18),
);

You can call the following methods on the driver:

Available methods

initialise

This should be called before interacting with the screen.

enableDisplay

Enables the display

invertDisplay

Inverts the colours of the display

showCursor

Shows the cursor

hideCursor

Hides the cursor

writeChar

Writes a single character to the display

clearDisplay

Clears the display

home

Moves the cursor to the beginning of the first line.

shiftLeft

Moves the cursor one position to the left

shiftRight

Moves the cursor one position to the right

setCursor

Moves the cursor to the specified row and column number

writeString

Writes the given string to the display.