how to make a touch screen with a Raspberry Pi?

Today, let's talk about how to make a touch screen with a Raspberry Pi. It sounds high-end, but in fact, it's very easy to operate! As long as you follow my steps, it can be done in minutes.
 

Step 1: Prepare the materials
1. Raspberry Pi: It is recommended to use Raspberry Pi 4B, which has strong performance and affordable price.
2. Touch screen: Our 7-inch capacitive touch screen from Xinlilai supports multi touch and is compatible with Raspberry Pi, plug and play!
3. Other accessories: HDMI cable, power adapter, Micro SD card (at least 16GB).
 

Step 2: Install the system
1. Download system image: Download Raspberry Pi OS from the Raspberry Pi official website.
2. Burn system: Use BalenaEtcher to burn the system image to a Micro SD card.
3. Connect the screen: Connect the touch screen to the Raspberry Pi through the HDMI interface, plug in the power and turn it on.
 

Step 3: Configure Touch Function
1. Install driver: After the system starts, open the terminal and enter the following command to install the driver:
```bash
sudo apt-get update
sudo apt-get install xserver-xorg-input-evdev
```
2. Calibrate the touch screen: Use the calibration tool we provide and follow the prompts to complete the calibration.
3. Test touch function: Open the browser, try sliding and clicking, is it very smooth?