Touch screen A - resistive LCD 3,5" 320x480px GPIO for Raspberry Pi 4/3/2/B+/Zero - Waveshare 9904

Description

Touch screen, resistive 3.5" for the Raspberry Pi with a resolution of 320 x 480 px. Works withRaspberry Pi, version 3B, 2B, B+, Zero and Zero W via the GPIO pins - as cap for minicomputer.

 

The device communicates through GPIO pins - as a cap for minicomputer.

The Raspberry Piis sold separately.

 

Connection to the Raspberry Pi

In order to run the screen, you need to put a screen on the GPIO pins of the Raspberry Pi.

 

 

Example of connecting the screen to the Raspberry Pi.

 

Software

The manufacturer has prepared the operating system with the installed drivers. The system should be unpacked using an appropriate program such as WinZip and upload to the card usingWin32 Disk Imager.

 

Screenshot of the programWin32 Disk Imager, when you select the system, just press the Write button and wait until the installation process is completed.

 

A detailed description of the connection to install drivers, without changing the Raspberry Pi, and the image of the finished system can be found onthe manufacturer's website

 

GPIO interface

 

Pin GPIO Symbol Description 1, 17 3.3 V Power Supply 3.3 V. 2, 4 5V Power Supply 5 V.

3, 5, 7, 8, 10,

12,13,15,16

NC Not connected. 6, 9, 14, 20, 25 GND Mass. 11 TP_IRQ An interruption from the touch panel. 18 LCD_RS Choice: commands or data to LCD panel. 19

LCD_SI/

TP_SPI

Input of data of SPI interface for the touch panel and LCD screen. 21 TP_SO The data output of SPI interface for the touch panel. 22

RST

Reset. 23

LCD_SCK/

TP_SCK

Clock signal SPI for the touch panel and LCD screen. 24 LCD_CS Chip select for the LCD screen. 26 TP_CS Chip select for touch panel.  

 

Specification

• Screen type: resistive touch
• Diagonal: 3,5 "
• Resolution: 320 x 480 px
• SPI communication
• Works with:Raspberry Piin version 3B, 2B, B+, Zero, and Zero W (working directly with system from the manufacturer)
• Screen dimensions: 85 x 56.5 mm

 

The external dimensions of the screen.

Set includes

• Touchscreen 3.5", resistive 
• Mounting screws

 

Useful links

• The website of the manufacturer: Waveshare
• Wiki - guide from manufacturer, along with a system image
• CE certificate
• RoHS Certificate