Raspberry Pi 4B/5 User Guide

Resource

General Tutorial Series

Instruction

Raspberry Pi 4 Model B, the completely upgraded, re-engineered model of the Pi family. It has more powerful processor, faster networking, supports dual 4K output, and provides different choice of RAM.

Features

BCM2711B0 (ARM Cortex-A72)
- 64-bit 1.5GHz quad-core
Choice of RAM
- PI4B-1GB: 1GB
- PI4B-2GB: 2GB
- PI4B-4GB: 4GB
Gigabit Ethernet
802.11ac 2.4GHz/5GHz dual-band NIC
Bluetooth 5.0, BLE
USB 3.0 x 2, USB 2.0 x 2
micro HDMI x 2 (supports 4Kp60)
PoE header (supports PoE HAT)
MicroSD slot
3.5 mm audio jack
40PIN GPIO header
CSI camera interface
DSI display interface
USB Type C power supply (5V/3A or above)

Product Size

How to use

1. Prepare: an SD card, and card reader.
2. Download the system (click me to download) Raspberry Pi 4 needs to download the latest released system (or the following version as shown in the figure) before it can be used.

3. Format the SD card: Use a card reader to insert the SD card into the computer, and use the SDFormatter.exe software to format the SD card. Click here to download SDFormatter.exe, and click to format the SD card.

4. Burn the image: use Win32DiskImager.exe to burn the image. Select the image to be burned, click "Write" to burn, (click here to download Win32DiskImager.exe). After the burning is completed, you will be prompted whether you want to format, here you need to click Cancel.

5. Start RPI4B: Insert the SD card after programming into the Raspberry Pi, and connect the adapter with the Type-C interface of 5V 3A to start the Raspberry Pi. Normally, you can see that the Power light is always on red, and the ACT green light is flashing.

6. Connect peripherals such as an on-screen mouse and keyboard to start your Raspberry Pi journey.

[] On this page, we provide some simple demos which are expected to help RPi beginners to solve some problems.

Before reading

Since the demos are based on Raspbian, before reading this tutorial please follow the official documentations to install the Raspbian operating system on your Raspberry Pi. See: INSTALLING OPERATING SYSTEM IMAGES

Some Linux commands are used in this tutorial but we only comment if necessary, so some Linux skills may be required while reading.

Question:How to assign the touch to the main screen of the Raspberry Pi 4 dual-screen display?

Answer:

1. Enter xrandr on the Raspberry Pi terminal to check the HDMI-ID where the main screen is located (mostly HDMI-1);

2. Enter xinput in the Raspberry Pi terminal to check the touch ID where the main screen is located (there are 2 touch IDs, if you don't know which one is the main screen, you can try both);

3. Run the command: xinput map-to-output <touch ID> <HDMI-ID>

(After matching the ID value, run the command to specify the touch to the main screen, such as: xinput map-to-output 7 HDMI-1 )

4. Since the command needs to be re-entered every time the boot is turned on, this command can be added to the boot auto-start:

sudo nano /etc/xdg/lxsession/LXDE-pi/autostart

Add: xinput map-to-output 7 HDMI-1 (remember to change to your own corresponding ID), then restart.

https://www.raspberrypi.org/forums/

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