Introduction
Today we are going to learn how to interface LCD TFT display using SPI interface with Raspberry Pi and also how to change the orientation of the screen. The SPI display comes in different sizes and speeds. Here is the list of all different type of RPi display with SPI interface from waveshare.
| Part Number | Resolution. | Display Interface | Touch Panel Interface | For use with | Dimension (mm) | Toughened Glass Cover | Display Tech. |
|---|---|---|---|---|---|---|---|
| 2.8inch RPi LCD (A) | 320×240 | SPI | SPI | Pi | As the Pi 3B+ | × | TFT |
| 3.2inch RPi LCD (C) | 320×240 | High-Speed SPI | SPI | Pi | As the Pi 3B+ | × | TFT |
| 3.5inch RPi LCD (B) | 480×320 | SPI | SPI | Pi | As the Pi 3B+ | × | IPS |
| 3.5inch RPi LCD (C) | 480×320 | High-Speed SPI | SPI | Pi | As the Pi 3B+ | × | TFT |
| 4inch RPi LCD (C) | 480×320 | High-Speed SPI | SPI | Pi | 96 × 61 | × | IPS |
source: https://www.waveshare.com
Pre Driver Installation
- Make an SD card with Rasbian OS or any other OS of your wish.
- Insert the SD card to your Raspberry Pi.
- Connect an HDMI monitor, USB keyboard and mouse.
- Connect your Display with Raspberry Pi.
- Connect a 2.5 amps 5v adapter and boot up the Pi.
- Open the terminal window.
- Type git clone https://www.github.com/LCD-show.git to download the driver files.
- Type cd LCD-show to go inside the downloaded folder
- As I am using the 3.2-inch display without high-speed SPI and with Rasbian OS I am using this comment to install the driver sudo ./LCD32-show. below is a table of different installation comments for different LCDs and OS.
- Now your Pi will automatically get rebooted and your desktop will be displayed on the LCD screen instead of your HDMI monitor.
For 2.8inch RPi LCD (A)
- sudo ./LCD28-show
- or (for Raspbian-Stretch-Lite) sudo ./LCD28-show lite
For 3.2inch RPi LCD (B)
- sudo ./LCD32-show
- or (for Raspbian-Stretch-Lite) sudo ./LCD32-show lite
For 3.5inch RPi LCD (A)
- sudo ./LCD35-show
- or (for Raspbian-Stretch-Lite) sudo ./LCD35-show lite
For 3.5inch RPi LCD (B) old version
- sudo ./LCD35B-show
- or (for Raspbian-Stretch-Lite) sudo ./LCD35B-show lite
For 3.5inch RPi LCD (B) V2 version
- sudo ./LCD35B-show-V2
- or (for Raspbian-Stretch-Lite) sudo ./LCD35B-show-V2 lite
For 3.5inch RPi LCD (C)
- sudo ./LCD35C-show
- or (for Raspbian-Stretch-Lite) sudo ./LCD35C-show lite
For 4inch RPi LCD (A)
- sudo ./LCD4-show
- or (for Raspbian-Stretch-Lite) sudo ./LCD4-show lite
Video Instructions
Changing Orientation
There are a total of 4 screen orientation possible,
- 0 degree
- 90 degree
- 180 degree
- 270 degree
Follow these steps to set the orientation,
- Open a terminal window, either you can directly open from your raspberry pi or you can use ssh.
- type cd lcd-show to enter inside the downloaded driver folder, which we have done in the previous step.
- Now type the below-provided code for whichever the orientation you need,
For 2.8inch RPi LCD (A)
- sudo ./LCD28-show X
- X should be 0, 90, 180 or 270
For 3.2inch RPi LCD (B)
- sudo ./LCD32-show X
- X should be 0, 90, 180 or 270
For 3.5inch RPi LCD (A)
- sudo ./LCD35-show X
- X should be 0, 90, 180 or 270
For 3.5inch RPi LCD (B)
- sudo ./LCD35-show X
- X should be 0, 90, 180 or 270
For 35inch RPi LCD (B) V2
- sudo ./LCD32B-show-V2 X
- X should be 0, 90, 180 or 270
For 3.5inch RPi LCD (C)
- sudo ./LCD35-show X
- X should be 0, 90, 180 or 270
For 4inch RPi LCD (A)
- sudo ./LCD4-show X
- X should be 0, 90, 180 or 270
Hi, I have this LCD https://www.cytron.io/p-3.5-inch-tft-touch-screen-for-rpi-3b-3b-plus-4b?src=search.list and have followed your instruction, however the screen still remain blank white. i’ve tried github from goodtft, and also waveshare one (you have a wrong github clone link) yet the screen remains white.
i can see a /dev/spidev0.0, when i change the ftt overlay file.
Can advise how to do now?