2.8inch Arduino Display

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Revision as of 10:31, 30 June 2018 by Lin (talk | contribs) (Using Instructions)
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Product picture

MAR2808-009.jpg MAR2808-010.jpg MAR2808-011.jpg

Product description

  • Support development boards such as ArduinoUNO and Mega2560 for use without wiring
  • 320X240 HD resolution and support touch function
  • Supports 16-bit RGB 65K color display and rich color display
  • using 8-bit parallel bus, refresh faster than serial SPI
  • With SD card slot to facilitate the expansion of the experiment
  • Provide Arduino library, provide a wealth of sample programs
  • Military-grade process standards, long-term work stably
  • Provides underlying driver technology support
  • Data Acquisition: See Driver download

Product parameters

name parameter
SKU MAR2808
size 2.8(inch)
type TFT
driver chip ILI9341
resolution 320*240 (Pixel)
module interface 8-bit parallel interface
effective display area 57.6x43.2(mm)
module PCB size 78.22x52.7(mm)
operating temperature -20℃~70℃
operating Voltage 5V
power consumption about 90mw
product weight 25(g)

Interface definition

MAR2808-008.jpg

number label pin description
1 LCD_RST LCD bus reset signal
2 LCD_CS LCD bus chip select signal
3 LCD_RS LCD bus command/data select signal
4 LCD_WR LCD bus write signal
5 LCD_RD LCD bus read signal
6 GND power ground
7 5V 5V power input
8 3V3 NC this pin can not be connected
9 LCD_D0 LCD 8-bit data Bit0
10 LCD_D1 LCD 8-bit data Bit1
11 LCD_D2 LCD 8-bit data Bit2
12 LCD_D3 LCD 8-bit data Bit3
13 LCD_D4 LCD 8-bit data Bit4
14 LCD_D5 LCD 8-bit data Bit5
15 LCD_D6 LCD 8-bit data Bit6
16 LCD_D7 LCD 8-bit data Bit7
17 SD_SS SD card SPI bus chip select signal
18 SD_DI SD card SPI bus MOSI signal
19 SD_DO SD card SPI bus MISO signal
20 SD_SCK SD card SPI bus clock signal

Product size

Product size drawing:

MAR2808-001.PNG

Hardware description

Hardware schematic:Arduino 2.8 inch display module schematic.pdf

Using Instructions

Arduino platform using instructions

1.Wiring instructions

connect with UNO development board Connect with Mega2560 Development Board
pins on the module UNO microcontroller pin pins on the module Mega2560 microcontroller pin
LCD_RST A4 LCD_RST 5V
LCD_CS A3 LCD_CS GND
LCD_RS A2 LCD_RS 21
LCD_WR A1 LCD_WR 20
LCD_RD A0 LCD_RD A0
GND GND GND GND
5V 5V 5V 5V
LCD_D0 8 LCD_D0 8
LCD_D1 9 LCD_D1 9
LCD_D2 2 LCD_D2 2
LCD_D3 3 LCD_D3 3
LCD_D4 4 LCD_D4 4
LCD_D5 5 LCD_D5 5
LCD_D6 6 LCD_D6 6
LCD_D7 7 LCD_D7 7
SD_SS 10 SD_SS 10
SD_DI 11 SD_DI 11
SD_DO 12 SD_DO 12
SD_SCK 13 SD_SCK 13

2.operating instructions

a.Connect the 2.8-inch display module to the Arduino development board according to the wiring instructions and power it on (note the development board model)

b.Download the 2.8 inch display module package from Drive download column

c.Extract the data package,open the install library folder,you can see the LCDWIKI_GUI,LCDWIKI_KBV and touch screen these three libraries,as shown below:

MAR2808-012.jpg

d.Copy the three libraries:LCDWIKI_GUI,LCDWIKI_KBV,and touch screen to the directory where the Arduino project files are located,

The default directory for Arduino project files is "C:\Users\Administrator\Documents\Arduino",You can define it yourself as follows:

Open Arduino IDE software,click File->Preferences to define the directory where Arduino project files are located,as shown in the following figure:

MAR2808-017.jpg

e.Open the Example folder in the package, you can see there are 11 test examples, as shown below:

MAR2808-013.jpg

f.Open any test example,eg open "Example_02_clear_screen"

g.After opening the "Example_02_clear_screen" test program,click the Tools button to select the board model and port number,as shown in the following figure:

800x800px

If the development board model selection Mega, you also need to select the processor model, for the 2.8-inch display module,

we only select the ATmega2560 processor, as shown below:

MAR2808-015.jpg

h.Click the upload button to compile and download. When "Done Uploading" is displayed,the program has been successfully downloaded to the development board,

as shown in the following figure:

MAR2808-016.jpg

i.If the 2.8-inch display module is continuously displayed in black, white, red, green, and blue, the program runs successfully.

precautions

a.The display module uses 8-bit parallel port to transfer data,so the LCDWIKI library also needs to be set to 8-bit mode (since the LCDWIKI library supports

both 8-bit and 16-bit modes),the modification method is as follows:

Open the file 'LCDWKI_KBV\lcd_mode.h and set the CONFIG'USE_8BIT_BUS macro to 1, as shown below:

//if using 8bit mode,set the below macro definition to 1
//if using 16bit mode,set the below macro definition to 0
#define CONFIG_USE_8BIT_BUS 1

Driver download

Common software description