📄️ OS Introduction
In the previous chapter, we powered on the Walnut Pi and logged into the system. The main difference between the Desktop and Server editions: you can think of the Server edition as the Desktop edition with the desktop removed. Therefore, standard Linux commands and configuration instructions are generally universal across both systems.
📄️ Pre-installed Software
The Walnut Pi system comes with several pre-installed applications for user convenience. This section provides a brief introduction to these applications, which can be found in the Start Menu.
📄️ Terminal and Common Commands
Opening Terminal on Desktop Edition
📄️ WiFi Connection
- Video Tutorial
📄️ Time Settings
When the Linux system starts, it automatically synchronizes the network time, but it uses the UTC (London time) by default. For use in China, you need to change the timezone to Asia/Shanghai so that the date command returns the correct time.
📄️ System Language
- Video Tutorial
📄️ IP Address
WiFi IP Address
📄️ SSH Remote Terminal
Users familiar with command-line operations can perform LAN-based SSH remote terminal control on a networked Walnut Pi, allowing convenient remote command operations on the Walnut Pi from your PC.
📄️ VNC Remote Desktop
- Video Tutorial
📄️ Device Map
The Walnut Pi Device Map is a unique feature of the Walnut Pi system. It retrieves the board's location via IP address and displays it on a map, pinpointed to the city level. Device Map Link
📄️ EMMC Flash Storage
The Walnut Pi 2B is available with an optional EMMC flash storage version, with a default capacity of 32GB. It offers significantly faster transfer speeds compared to an SD card. It can be used to install the Walnut Pi system or as a storage drive.
📄️ NVMe SSD
The Walnut Pi 2B features a PCIe 2.1 interface that supports NVMe protocol SSDs—the fastest non-volatile storage medium on the Walnut Pi 2B.
📄️ Shutdown and Reboot
The Walnut Pi runs an operating system, so unlike a typical microcontroller development board that simply shuts off when power is cut, it is recommended to use the Log Out function in the menu bar for shutdown or reboot in the pop-up dialog. This helps protect the circuit board and avoids sudden power loss, which could damage the operating system or cause data loss.
📄️ Temperature Information
The Walnut Pi 2B's T527 chip has 6 temperature sensors:
📄️ Chip ID
The Walnut Pi 2B is powered by the Allwinner T527 chipset, and each chip has a unique chip ID. Users can retrieve the chip ID using the following command to distinguish between different development boards:
📄️ Audio and Recording
The Walnut Pi 2B supports both HDMI audio and 3.5mm headphone jack audio output.
📄️ IR Receiver
The Walnut Pi has 1 onboard infrared receiver.
📄️ USB Drive Mounting
Insert the USB drive into one of the Walnut Pi's USB ports.
📄️ USB Camera
The Walnut Pi system has built-in USB camera drivers. Most USB cameras on the market are supported. This tutorial uses the following model as an example:
📄️ MIPI Camera
This tutorial requires Walnut Pi 2B system version V1.6.0 or later.
🗃️ Display
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📄️ Auto-run Scripts on Boot
The Walnut Pi official Debian system supports automatically running all sh files located under the /boot/start directory at boot.
📄️ config.txt
config.txt is primarily used to configure certain features of the Walnut Pi.