RPi TFT LCD Features
The TFT LCD is a kind of liquid crystal LCD that is connected to each pixel using a transistor. And in addition to low current consumption it has backlight. It is available in a variety of dimensions and resolutions and features high-quality and high-resolution. This module uses SPI protocol for communication, which connects the display and touch screen to Raspberry Pi simultaneously.
You can download the datasheet of this module here.
For more details, refer to the link below.
https://www.waveshare.com/wiki/2.8inch_RPi_LCD_(A)
Required Material
Hardware component
Note
In order to interface TFT display with Raspberry Pi, prepare only one of the following LCDs.
Software Apps
Interfacing 2.8 Inch TFT LCD with Raspberry Pi
Step 1: Circuit
The display shield module is placed directly on Raspberry Pi.
Step 2: Library
First, install the Raspbian on your Raspberry Pi.
Important Tip
You need to install the Legacy (Bullseye) version of the OS for your Raspberry Pi.
Tip
If you need more help with installing a Raspbian on Raspberry Pi, read this tutorial: Step by Step Guide to Install Raspbian on Raspberry Pi
After installing Raspbian, open Raspberry Pi Terminal and enter the following command to install the LCD-Show library.
Note: You must be connected to Internet to download the library.
git clone https://github.com/waveshare/LCD-show.git
After installing library, use the following instructions to enter the LCD-show folder.
cd LCD-show/
Then run the following command once (depending on the display type)
| Command | Display |
|---|---|
| chmod +x LCD28-show | Raspberry Pi LCD SPI 2.8 Inch |
| chmod +x LCD32C-show | Raspberry Pi LCD SPI 3.2 Inch Type C |
| chmod +x LCD35C-show | Raspberry Pi LCD SPI 3.5 Inch Type C |
Note
if you use another module of Display, Type ‘ls’ in Terminal to show you the list of support Display.
Step 3: Code
After installing library, run one of the following commands according to the type of your display.
Note
You must be in LCD-show folder in order to run the following commands.
| Command | Display |
|---|---|
| ./LCD28-show | Raspberry Pi LCD SPI 2.8 Inch |
| ./LCD32C-show or ./LCD32-show | Raspberry Pi LCD SPI 3.2 Inch Type C |
| ./LCD35C-show or ./LCD35-show | Raspberry Pi LCD SPI 3.5 Inch Type C |
| ./LCD-hdmi | Raspberry Pi HDMI Output |
After running the commands above, the operating system will reset.
You can use one of the following commands depending on the type of display in order to rotate the screen.
| Command | Operation |
|---|---|
| ./LCD28-show 0 | 0 degree turn |
| ./LCD28-show 90 | 90 degree turn |
| ./LCD28-show 180 | 180 degree turn |
| ./LCD28-show 270 | 270 degree turn |
