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Versions

  • 1.8” SPI LCD, ST7735, 128*160, with SD card slot
  • 2.2” SPI LCD, ILI9341 240*320, with SD card slot
  • 2.4” SPI LCD, ILI9341 240*320, with SD card slot, with touch panel
  • 2.8” SPI LCD, ILI9341 240*320, with SD card slot, with touch panel
  • 3.2” SPI LCD, ILI93141 240*320, with SD card slot, with touch panel
  • 4.0” SPI LCD, ST7796S 480*320, with SD card slot, with touch panel

Pin Definitions

Pins Pins Funcs Note
1 VCC 5V/3.3V power input
2 GND ground
3 CS LCD chip select signal, low level enable
4 RESET LCD screen reset signal, low level reset
5 DC/RS LCD screen register/data selection signal, 0: register, 1. data
6 SDI(MOSI) SPI bus write data signal
7 SCK SPI bus clock signal
8 LED Backlight control, high level lights up, if no control is needed, connect to 3.3V to keep it on
9 SDO(MISO) SPI Bus read data signal, if no reading function is needed, it does not need to be connected
10 T_CLK Touch SPI bus clock signal
11 T_CS Touch screen chip select signal, low level enable
12 T_DIN Touch SPI bus input
13 T_DO Touch SPI bus output
14 T_IRQ Touch screen interrupt signal, low level when touch is detected

Note: The 2.2-inch SPI module has no touch pins and has 9 PINs. The 2.4/2.8/3.2/3.5/4.0 modules with touch have 14 PIN standard pins.

LCD Raw

3.2" ILI9341 // 37 pin or 18 pin

2.2" ILI9341 14 pin

尺寸：2.2 inch 分辨率：240(RGB) x 320 接口： 4-Wire SPI （支持硬件SPI） Color Depth： 262K/65K CM (W x H x D) (mm) ：40.10x55.20x2.35 Active Area(mm) ：33.84x45.12 LED Numbers ： 4 LEDs Driver IC ：ILI9341V

SCH drive by ESP8266

repo

Basic functionally of this library was origianlly based on the demo-code of Adafruit GFX lib and Adafruit TFTLCD lib.

Adafruit GFX lib: https://github.com/adafruit/Adafruit-GFX-Library

Adafruit TFTLCD lib: https://github.com/adafruit/TFTLCD-Library

// LCD controller chip identifiers
#define ID_932X 0
#define ID_7575 1
#define ID_9341 2
#define ID_HX8357D 3
#define ID_UNKNOWN 0xFF

PCtoLCD2002

How to Generate 8x16 ASCII Font Bitmaps with PCtoLCD2002

Step 1: Set the Dot Matrix Size

When choosing the dot matrix size, make sure the value is greater than the number of bytes each character uses. For example, an 8x16 character uses 8x16/8 = 16 bytes, so select a dot matrix size greater than 16.

Step 2: Configure Character Width and Height

For 8x16 ASCII, set both the character width and height to 16.

This means each ASCII character will be 8x16 pixels, and the width will be half the value you set (since each byte represents 8 pixels horizontally).

Step 3: Input the ASCII Table

Paste the ASCII character table into the input field.

Step 4: Generate the Font Bitmap

Click the button to generate the font bitmap. The result will look like this:

Step 5: Use the Generated Font in Code

The 8x16 font bitmap is already provided in the sample file lcdfont.h, as shown below:

tools

image2LCD for epaper

2.13 寸墨水屏的分辨率为 250x122，先用 PS 或者画图软件制作一张 250x122 像素的.bmp 格式的图像。

打开取模软件，扫描模式设置为垂直扫描，宽度和高度设置为 250x122，取消勾选包含图像头数据，勾选颜色反转，设置为上下颠倒，点击保存为 .c 文件。

将取模软件生产的 .c 文件里面｛｝里面的内容复制到图传程序 imagedata.cpp 文件里 gImage 数组的大括号里。

output

ref

Table of Contents

https://www.electrodragon.com