Elegoo 3.5" TFT Manual de usuario

Elegoo 3.5’’ TFT

Touch Screen User

Manual

Content

1. Get Prepared..........................................................................................................................4

1.1. Product Description..................................................................................................4

1.2. Hardware Preparation .............................................................................................5

1.3. Software Preparation ...............................................................................................8

1.3.1. Software Needed...........................................................................................8

1.3.2. Download System Image...........................................................................10

2. Installation System .............................................................................................................11

2.1. Install Configured Raspbian system....................................................................11

2.2. Install Official Raspbian System...........................................................................14

3. Advanced Function .............................................................................................................20

3.1. Touch Screen Calibration.......................................................................................20

3.2. Install Virtual Keyboard..........................................................................................22

3.3. Modify Display Orientation...................................................................................26

4. FAQ .........................................................................................................................................27

4.1. Compatible Systems...............................................................................................27

4.2. White /Blank Screen ...............................................................................................27

4.3. Kernel Crash.............................................................................................................29

4.4. Touch Screen Issue .................................................................................................29

4.5. Performance Issue..................................................................................................30

4.6. NOOBS Issue............................................................................................................31

Statement

This manual is used only for our Elegoo 3.5 inch screen for Raspberry Pi and

Raspbian system. If you are using Linux system this manual wouldn’t be a perfect

reference and if you are using no-Linux system then you can skip this manual.

Get Prepared

1.1.

Product Description

（1）Product Features：

3.5inch touch screen，480×320 resolution ratio

Resistive touch screen function

Compatible with all versions of Raspberry Pi

CE and RoHS certificated

（2）3.5 inch touch screen size：

（3）Specifications：

Type

TFT Touch

Screen

Interface

SPI

Touch panel control IC

XPT2046

Color gradation index

65536 colors

Back Light style

LED

Resolution

320 X 480 (Pixel)

Size Ratio

8 : 5

Power Consumption

TBD

Back-light current

TBD

Operating

temperature(℃)

TBD

（4）Raspberry Pi GPIOs used by 3.5 inch touch screen

INTERFACE

RPi PIN NO.

SYMBOL

DESCRIPTION

1,17 3.3V Power positive(3.3V input)

2.4 5V Power positive(5V input)

3,5,7,8,10,12,13,15,16 NC NC

6,9,14,20,25 GND GND

11 TP_IRQ Touch Panel interrupt, low level while the

Touch Panel detects touching

18 LCD_RS LCD instruction control, Instruction/Data

19 LCD_SI/TP_SI SPI data input of LCD/Touch Panel

21 TP_SO SPI data output Touch Panel

22 RST Reset

23 LCD_SCK/TP_SC

K SPI clock of LCD/Touch Panel

24 LCD_CS LCDs chip selection, low active

26 TP_CS Touch Panel's chip selection, low active

1.2.

Hardware Preparation

（1）A computer(better with desktop)；

（2）A Raspberry Pi (Pi3 is recommended which is also used in next tutorial）

（3）Elegoo 3.5 inch TFT screen；

（4）One Micro SD with at least 4 GB space，32GB is preferred；

（5）One Micro USB cable (USB type-A to USB type B Micro)

（6）One SD card reader

（7）One network cable

1.3.

Software Preparation

1.3.1.

Software Needed

（1）SDFormatter.exe，used to format SD card

（2）Win32DiskImager.exe，used to write system into SD card

（3）Putty.exe，textual interface used on PC

Attention: The above 3 software are available in CD Where there is a file named

Software

（4）Advanced IP Scanner，go to

http://download.cnet.com/Advanced-IP-Scanner/3000-18508_4-10115592.html and

download the local area network (LAN) IP scanner software which can be used

directly.

1.3.2.

Download System Image

（1）Download the configured Raspbian system image (with drivers pre-installed)

from below link:

Https://github.com/goodtft/LCD-show/wiki/Images-Download-address

（2）Download the official Raspbian System Image from Raspberry official website --

https://www.raspberrypi.org/downloads/raspbian/ and choose the zip file with PIXEL.

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