1.14-lcd-breakout

1.14" LCD Breakout

1.14 inch LCD Breakout is a 1.14-inch display breakout with a resolution of 240 135 pixels, 65K RGB colours, and a crisp and colorful showing effect, built specifically for cross-platform to broaden its involvement via SPI communication by including a GPIO header. The ST7789 Driver and SPI Interface are included in the 1.14 Inch LCD Breakout, reducing the number of IO pins required.

Features

• 4-wire SPI Communication
• Cross-Platform support
• SPI Interface
• 1.14 inch display
• Voltage Level Shifter

Specifications

• Operating Voltage - 3.3 V / 5V
• Display Size - 24.91 × 14.86mm
• Pixels - 240×135 resolution
• Pixel Size - 0.1101 × 0.1035mm
• Display Colour - 65K RGB
• Display Driver - ST7789
• Voltage Level Shifter - TXB0108PWR

File:114 lcd breakout.png

Buy it From : Click Here

Pinout

1.14" LCD Breakout	Description
GND	Ground Supply
VCC	Power Supply 3.3V - 5V DC
DIN	Serial Data Input / Outout
CLK	Serial Clock
CS	Chip select input pin ("Low" enable)
DC	Display data / Command selection pin DC='1': Display data. DC='0': Command data
RST	Reset Pin. Initialize the chip with a low input
BL	Blacklight Control. High: Blacklight on Low: Blacklight off.

Installation

PICO RP2040 (MicroPython)

• For running this HAT, you require these components :
  • Raspberry Pi Pico X 1
  • 1.14" Round LCD Breakout X 1
  • USB Cable X 1

• Copy or clone code from Github.

https://github.com/sbcshop/1.14-LCD-Breakout

• Connect LCD breakout with Raspberry Pi Pico as shown in the below pinout.

1.14" LCD Breakout	PICO Pins
VCC	3.3V / 5V
GND	GND
LCD DIN	GP11
LCD CLK	GP10
LCD DC	GP8
LCD CS	GP9
LCD RST	GP12
LCD BL	GP13

• Press and hold BOOTSEL pin of Raspberry Pi Pico and connect the USB cable, it will create a drive as RPI-RP2.

• Now drag and drog/copy firmware.uf2 file from firmware folder to RPI-RP2 Drive. It will reboot your raspberry pi pico.

• Open Thonny IDE and Choose interpreter as MicroPython (Raspberry Pi pico).

• Now you can run example codes from the Pico_Example_mpy folder in Thonny Ide. For example, Open the hello.py file in thonny and click on the green play button to run this example.

It will print "Hello World!" on LCD.

Working Example

• This module was tested on Raspberry Pi Pico. You need to provide a SPI object and the pin to use for the DC pin of the screen.

import machine
import st7789
spi = SPI(1, baudrate=40000000, sck=Pin(10), mosi=Pin(11))
tft = st7789.ST7789(spi, 135, 240, reset=Pin(12, Pin.OUT), cs=Pin(9, Pin.OUT), dc=Pin(8, Pin.OUT), backlight=Pin(13, Pin.OUT), rotation=3)
tft.init()

Functions and Arguments

• st7789.ST7789(spi, width, height, reset, dc, cs, backlight, rotation, buffer_size)

required arguments:

`spi` spi device
  `width` display width
  `height` display height

optional args:

`reset` reset pin
  `dc` dc pin
  `cs` cs pin
  `backlight` backlight pin
  `rotation` 0-0 degrees, 1-90 degrees, 2-180 degrees, 3-270 degrees
  `buffer_size` 0= buffer dynamically allocated and freed as needed.

If buffer_size is specified it must be large enough to contain the largest bitmap, font character, and/or JPG used (Rows * Columns *2 bytes). Specifying a buffer_size reserves memory for use by the driver otherwise, memory required is allocated and free dynamically as it is needed. Dynamic allocation can cause heap fragmentation so garbage collection (GC) should be enabled.

This driver supports only 16bit colors in RGB565 notation.

• ST7789.on()

Turn on the backlight pin if one was defined during init.

• ST7789.off()

Turn off the backlight pin if one was defined during init.

• ST7789.pixel(x, y, color)

Set the specified pixel to the given color.

• ST7789.line(x0, y0, x1, y1, color)

Draws a single line with the provided color from (x0, y0) to (x1, y1).

• ST7789.hline(x, y, length, color)

Draws a single horizontal line with the provided color and length in pixels. Along with vline, this is a fast version with reduced number of SPI calls.

• ST7789.vline(x, y, length, color)

Draws a single horizontal line with the provided color and length in pixels.

• ST7789.rect(x, y, width, height, color)

Draws a rectangle from (x, y) with corresponding dimensions

• ST7789.fill_rect(x, y, width, height, color)

Fill a rectangle starting from (x, y) coordinates

Source code credit: https://github.com/russhughes/st7789_mpy

Resources

Github

• Source Code