https://docs.khadas.com/ 2026-04-15T02:22:33+00:00 https://docs.khadas.com/ https://docs.khadas.com/ttps://docs.khadas.com/lib/tpl/dokuwiki-new/images/favicon.ico text/html 2023-01-10T20:27:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/5g-module-usage?rev=1673400471&do=diff VIM4 RM500Q 5G NR Module Introduction This page will introduce the usage of RM500Q 5G NR module.You will learn how to use the 5G module on Khadas SBC. AT command node is /dev/ttyUSB2. Preparation * Disconnect the Khadas SBC power port cable. * Insert the 5G module board into the text/html 2024-12-19T01:01:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/android-device-tree-overlay?rev=1734588115&do=diff VIM4 Android Device Tree Overlay We can use DT overlays to enable/disable or change the configuration of peripherals without recompiling the kernel source code. Device Reference Table Android Version DT overlays folder text/html 2023-04-26T09:28:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/auto-login?rev=1682515712&do=diff VIM4 Auto Login Introduction This page mainly introduces automatic login under Ubuntu. Desktop OS Check Settings->Users->Automatic Login. Server OS (Headless) For tty1-tty6: sudo cp /lib/systemd/system/getty@.service /lib/systemd/system/getty@.service.backup sudo sed -i "s/ExecStart=.*/ExecStart=-\/sbin\/agetty --noclear --autologin khadas \%I \$TERM/g" /lib/systemd/system/getty@.service text/html 2022-12-12T20:18:40+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/bluetooth?rev=1670894320&do=diff VIM4 Bluetooth Linux Bluetooth configure examples for Ubuntu Desktop and Server variants Ubuntu Desktop Bluetooth settings are in the upper-right corner, click it and select Device. [gnome-bluetooth1] Click Search to scan for Bluetooth devices nearby. [gnome-bluetooth2] Select the device that you want to pair with. text/html 2024-12-18T22:31:52+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/bootup-app_keep-alive-app-settings?rev=1734579112&do=diff VIM4 Android Bootup App And Keep Alive App Settings Bootup App The bootup app function allows us to set a specific app to open automatically after turning on the device. You can find this option by following the steps below. Droid Settings→More settings→Device Preferences→Bootup app Setting. text/html 2024-12-18T22:22:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/camera-settings?rev=1734578530&do=diff VIM4 Android Camera Settings Our system uses the MIPI as the front camera and the USB as the rear camera for imaging by default. This is because our MIPI wiring is already properly arranged. However, due to different definitions when using USB cameras, various USB camera products may have different configurations for front and rear cameras, as well as image rotation. We have now added an option in the settings to adjust the rotation angle of the front and rear cameras and the USB camera. Specif… text/html 2024-12-18T23:29:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/change-boot-animation?rev=1734582544&do=diff VIM4 Android Change Boot Animation Android boot animation is composed of a series of PNG pictures that act as frames of a continuous animation. Each PNG frame is saved in a compressed format. The boot animation file name is bootanimation.zip, the format is text/html 2023-06-13T06:56:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/change-boot-logo?rev=1686653789&do=diff vim4 logo VIM4 Change Boot Logo Introduction Users can use a custom Boot-Logo to replace default Khadas Boot-logo, there we talk about U-Boot stage logo, which will be displayed first after reboot. Linux U-Boot Logo The U-Boot logo is located at /usr/share/fenix/logo/logo.bmp text/html 2025-04-23T23:54:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/chromium-widevine-support?rev=1745466846&do=diff VIM4 Enabling Netflix support in Chromium The Chromium version shipped in Fenix Ubuntu version 1.7.4+ supports playing DRM protected videos on websites like Netflix and Prime Video by installing Widevine CDM library. You can follow this documentation to install the same. text/html 2022-07-13T21:46:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/cooling-fan?rev=1657763160&do=diff VIM4 Cooling Fan Introduction This page mainly introduces Cooling Fan. The first half describes how to control the Cooling Fan on Ubuntu, and the second half describes how to control the Cooling Fan on Android. Ubuntu This setting is only applicable to 4.9, 5.4, and 5.15 linux kernel text/html 2022-09-28T08:45:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/device-tree-overlay?rev=1664369102&do=diff VIM4 Device Tree Overlay We can use DT overlays to enable/disable or change configuration for peripherals without recompiling the DT kernel source code. DT collections <https://github.com/khadas/khadas-linux-kernel-dt-overlays> Device Reference Table Kernel Version DT overlays folder text/html 2022-09-07T02:33:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/em06-lte-4g-module?rev=1662532398&do=diff VIM4 EM06 LTE 4G Module Introduction This page mainly introduces how to use the EM06 LTE module from three parts. The first part is about how to query the support list of the LTE module, the second is some related operations under Ubuntu, and the third is some related operations under Android. text/html 2024-11-30T03:24:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/enable-panfrost?rev=1732955057&do=diff VIM4 Enable Panfrost For Ubuntu 24.04 only. The default release images for VIM4/3/3L/1S with 5.15 kernel and Edge2 with 6.1 kernel are shipped with close source code of Mali GPU userspace drivers, this documentation will guide you to enable the open source GPU driver of text/html 2024-07-03T02:53:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/firewall?rev=1719989597&do=diff VIM4 Firewall Introduction This document guides you to setup a simple network firewall with UFW Uncomplicated Firewall on your Khadas SBC. Preparation 1. Open the kernel modules configuration file $ sudo vi /etc/modules-load.d/modules.conf And add the necessary network related kernel modules at the bottom of the file. text/html 2023-09-15T00:42:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/identify-version?rev=1694752959&do=diff amlogic a311d2 a311d2-n0d cpu revisions VIM4 Versions There are two versions: VIM4 and New VIM4 with NPU. Only V13A and later versions include NPU. VIM4 Versions Differences Reference table SBC Name NPU Board version Top Side CPU text/html 2023-07-05T03:35:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/imx415-mipi-camera?rev=1688542525&do=diff VIM4 IMX415 MIPI Camera Introduction This document mainly introduces the usage of IMX415 MIPI Camera. Hardware Connection The reverse connection will damage the camera, please check the connection of the picture carefully before connecting. Different VIM4 Versions text/html 2023-01-09T20:27:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/os08a10-mipi-camera?rev=1673314039&do=diff VIM4 OS08A10 MIPI Camera Introduction This document mainly introduces the usage of OS08A10 MIPI Camera. Hardware Connection The reverse connection will damage the camera, please check the connection of the picture carefully before connecting. [docs-vim4-camera-os8a10] Identify VIM4 Version text/html 2024-12-18T22:27:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/pin-multiple?rev=1734578831&do=diff VIM4 Android Pin Multiple When implementing a certain input and output that requires GPIO, we found relatively few GPIOs available on the 40-pin or 16-pin connector. To this end, we removed the pins' original functions and enabled GPIO control. In this way, any pins that are not required can be fully utilized to expand more GPIOs. text/html 2024-09-18T06:49:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/remote-access?rev=1726656572&do=diff VIM4 Remote access Access a remote terminal with SSH SSH (Secure SHell) provides secure access to a terminal session on your board. You can access the terminal of a board remotely from another computer on the same network using the Secure SHell (SSH) protocol. text/html 2023-11-07T06:06:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/rsdb?rev=1699355219&do=diff VIM4 RSDB Wi-Fi Introduction This document is mainly about RSDB Wi-Fi (Real Simultaneous Dual Band) which allows you to connect to 2.4G and 5G wifi bands on a network simultaneously. The first part of the document covers how to use RSDB Wi-Fi under Ubuntu Desktop and the second part covers how to use it in Ubuntu Server. text/html 2025-10-13T06:03:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/start?rev=1760349788&do=diff vim4 VIM4 Configuration Note Basic * VIM4 Device Tree Overlay * VIM4 Kernel Bootargs User Config * VIM4 Auto Login * VIM4 Remote access * VIM4 Change Boot Logo * VIM4 Android Change Boot Animation * VIM4 Android Camera Settings * VIM4 Android Pin Multiple * VIM4 Android Bootup App And Keep Alive App Settings * VIM4 Android Device Tree Overlay * VIM4 RSDB Wi-Fi * VIM4 Wi-Fi Share * VIM4 Bluetooth * VIM4 USB Gadget * VIM4 Firewall * VIM4 WOL (Wake-On-Lan) * V… text/html 2022-11-08T20:29:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/ts050-touchscreen?rev=1667957362&do=diff VIM4 TS050 Touchscreen Introduction This document mainly introduces the connection and usage of TS050. Hardware Connection [VIM4 ts050 panel front connection] [vim4-ts050] text/html 2022-08-18T01:36:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/upgrade-linux-kernel?rev=1660801004&do=diff vim4 upgrade linux kernel VIM4 Upgrade Linux Kernel Introduction This page leads you to upgrade Linux Kernel manually. Upgrade Copy the kernel, dtb and header - these debian packages to your board and install them directly. The Linux debian packages as below: * linux-dtb-amlogic-5.4_xxxx_arm64.deb text/html 2022-11-29T21:00:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/upgrade-linux-uboot?rev=1669773655&do=diff VIM4 Upgrade Linux U-Boot Introduction This page leads you to upgrade U-Boot manually. Upgrade Copy the U-Boot debian package to your board and install it directly. The U-Boot debian package is linux-u-boot-vim4-vendor_xxxx-2019.01_arm64.deb, xxxx text/html 2022-09-19T04:15:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/upgrade-system?rev=1663575323&do=diff VIM4 Upgrade System Introduction This page leads you to upgrade Ubuntu system to the latest version. This guide only applies to officially released Ubuntu images, check here for official images. Upgrade $ sudo apt update $ sudo apt full-upgrade $ sync $ sudo reboot text/html 2025-08-17T23:24:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/usb-gadget?rev=1755487455&do=diff VIM4 USB Gadget Introduction This document mainly introduces the usage of USB gadget. From version 1.7.5, USB gadget is enabled by default, no need any setup, you can just skip the overlay and service setup. System Configuration Upgrade System text/html 2022-09-28T08:45:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/user-config?rev=1664369119&do=diff VIM4 Kernel Bootargs User Config Introduction This page mainly introduces how-to user can customize linux kernel bootargs under Ubuntu. How-to Customize Linux Kernel Bootargs You can edit file /boot/uEnv.txt to add the user bootargs. The default file contents are similar as below: text/html 2025-10-13T06:03:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/wi-fi-country-code-configuration-guide?rev=1760349827&do=diff VIM4 Wi-Fi Country Code Configuration Guide Wi-Fi Country Code Configuration Guide 1. Introduction By default, the Wi-Fi module's Country Code is set to 00 (global). Wi-Fi channels and power levels are regulated differently in each country. To ensure proper functionality and legal compliance when using the device in different country, you may need to set the Country Code to match your current location. text/html 2024-07-04T04:16:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/wifi-share?rev=1720080990&do=diff VIM4 Wi-Fi Share Introduction This document guides you to share the Wi-Fi connection via the LAN port. Ubuntu Desktop 1. Open nm-connection-editor $ nm-connection-editor 2. Click on the + button to add a new connection 3. Select Ethernet and click on the text/html 2022-12-12T20:21:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/configurations/wol?rev=1670894472&do=diff VIM4 WOL (Wake-On-Lan) Introduction This document mainly introduces WOL. You will learn how to enable WOL and wake up through WOL. The first part of the document describes the usage under Ubuntu, and the second part describes the usage under Android.