https://docs.khadas.com/ 2026-04-06T15:08:00+00:00 https://docs.khadas.com/ https://docs.khadas.com/ttps://docs.khadas.com/lib/tpl/dokuwiki-new/images/favicon.ico text/html 2023-10-23T02:59:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/armnn-tflite?rev=1698044355&do=diff VIM4 TFLite Delegate Khadas Edges and VIMs are powered by ARM Cortex-A CPUs and Mali GPUs. We can make use of the available computation power for running TFLite models using ArmNN Libraries by leveraging TFLite interpreter Delegate. The Delegate is provided by ARM as arm-software/armnn and the provided examples are made to make use of it. text/html 2022-09-07T02:13:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/chromium?rev=1662531196&do=diff VIM4 Chromium with WebGL Introduction This document mainly describes how to install Chromium and add WebGL support. If you install Chromium using snap, you can't use WebGL. This is just an experienced function, you may got some issues when you enable the WebGL, you can follow the steps below to enable WebGL at your own risk. text/html 2023-01-03T01:30:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/dmic?rev=1672727406&do=diff VIM4 DMIC Introduction This page introduces the usage of DMIC ，and guide you to record with DMIC. Preparation Please make sure you use the latest image, if not please follow Upgrade The System to upgrade your system. Record from DMIC $ arecord -D hw:0,4 -r 48000 -f S16_LE -c 2 -d 10 test.wav Recording WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo $ ls test.wav test.wav text/html 2022-07-13T05:37:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/docker?rev=1657705077&do=diff vim4 docker VIM4 Docker Please check Get Docker CE for Ubuntu. text/html 2025-04-23T06:32:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/e-paper?rev=1745404366&do=diff VIM4 e-Paper This guide provides instructions on setting up and using the Waveshare e-Paper 7.3-inch (epd_7in3e) display on Khadas VIM4, VIM3/3L, and VIM1S boards. It also includes information on the InkyPi repository for additional functionality. text/html 2024-06-17T03:02:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/ge2d?rev=1718607737&do=diff vim4 ge2d VIM4 GE2D Khadas VIMs provide a GE2D (Graphics Engine 2D) onboard for fast 2D graphics operations, such as cropping, resizing, rotating, etc. We can use the GE2D for image graphics processing. Follow the table for suitable runtime platform board text/html 2023-10-27T03:58:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/gnss-4g?rev=1698393506&do=diff VIM4 GNSS on 4G Module Introduction This page will introduce the usage of the GPS/GNSS capabilities on 4G module (EM06_E). This includes how to enable the GNSS functions and get the raw satellite data from the module, And how to display the Positional data graphically. text/html 2023-10-27T03:59:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/gnss-5g?rev=1698393544&do=diff VIM4 GNSS on 5G Module Introduction This page will introduce the usage of the GPS/GNSS capabilities on 5G module (RM500Q-GL). This includes how to enable the GNSS functions and get the raw satellite data from the module, And how to display the Positional data graphically. text/html 2022-07-13T05:37:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/gsensor?rev=1657705055&do=diff VIM4 G-Sensor Introduction By referring to this page, you will know which node of G-Sensor is, and how to read the value of G-Sensor through C program. System Configuration Check G-sensor node. $ ll /dev/accel crw-rw-rw- 1 root root 10, 50 Mar 18 12:17 /dev/accel text/html 2024-09-13T02:57:59+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/hardware-decoding?rev=1726210679&do=diff vim4 decoding VIM4 Hardware Decoding Introduction This page introduces how to use hardware decoding. Only supoport Amlgoic 5.4/5.15 Kernel. H264 Hardware Decoding Here is an example to decode H264 file to NV12 and then encode to H264. Decoding & encoding: gst-launch-1.0 filesrc location=/home/khadas/bbb_sunflower_1080p_60fps_normal.mp4 ! qtdemux name=d d.video_0 ! h264parse ! v4l2h264dec ! video/x-raw,format=NV12 ! amlvenc ! h264parse ! filesink location=/home/khadas/h264dec.h264 text/html 2024-04-21T21:36:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/hardware-encoding?rev=1713749797&do=diff vim4 encoding VIM4 Hardware Encoding Introduction This page introduces how to use hardware encoding on VIM4. Only supoport Amlgoic 5.4/5.15 Kernel. Encoding with Amlogic Library H264 Hardware Encoding aml_enc_test 1080p.nv12 dump.h264 1920 1080 30 30 6000000 100 1 0 2 4 text/html 2024-09-09T05:38:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/hdmi-input-5.4?rev=1725874693&do=diff VIM4 HDMI Input for 5.4 Kernel Introduction This documentation will introduce the usage of HDMI Input. This documentation is only for Linux system. Preparation HDMI input preview can only work under framebuffer console, so you need to use the server image, you can install via OOWOW. text/html 2024-11-25T08:50:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/hdmi-input-5.15?rev=1732542638&do=diff VIM4 HDMI Input for 5.15 Kernel This documentation is only for Linux system. Hardware Connection * Connect your VIM4 HDMI Out to an HDMI Display * Connect your HDMI OUT cable to VIM4 HDMI IN port You must connect your VIM4 to a workablbe HDMI text/html 2024-09-09T06:37:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/hdmi-input-android11?rev=1725878236&do=diff VIM4 HDMI Input for Android11 Hardware connection * Connect your VIM4 HDMI OUT to an HDMI Display. * Connect your HDMI OUT cable to VIM4 HDMI IN port. Get demo code You can download the HDMIN demo code from follow link. And use android studio tools to compile. text/html 2024-09-09T05:39:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/hdmi-input?rev=1725874755&do=diff VIM4 HDMI Input Introduction This documentation will introduce the usage of HDMI Input. * If you use the 5.4 kernel image (Linux system only), please check here: VIM4 HDMI Input for 5.4 Kernel * If you use the 5.15 kernel image (Linux system only), please check here: VIM4 HDMI Input for 5.15 Kernel * If you use the android11 image, please check here: text/html 2024-08-06T08:48:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/ir?rev=1722948499&do=diff VIM4 IR remote This documentation is only used for Android. VIM4 does not have an IR receiver. If you require this feature, you will have to attach an IR receiver to the 40-Pin Header, and additional software configurations are required. This document guides you to add IR input keys on Android. text/html 2023-12-26T03:08:41+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/opencl?rev=1703578121&do=diff vim4 opencl VIM4 OpenCL Khadas Edges and VIMs are powered by ARM Mali GPUs. We can make use of the available processing power offered to accelerate computational tasks like physics simulations, audio processing, neural networks, etc. Fenix images are already bundled with the necessary OpenCL libraries to get started, we also provide some demos to make use of the GPU. text/html 2023-12-26T03:06:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/opencv?rev=1703578016&do=diff vim4 opencv VIM4 OpenCV OpenCV is a popular open-source library for Computer Vision and Image processing Applications. Install OpenCV Install the libraries for C++ and Python $ sudo apt update $ sudo apt install libopencv-dev python3-opencv Get source code Clone the examples text/html 2022-09-07T02:19:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/ppsspp?rev=1662531579&do=diff VIM4 PPSSPP Only support Ubuntu 22.04 Gnome Desktop. Install PPSSPP Package sudo apt update sudo apt install libsdl2-2.0-0 mkdir /tmp/ppsspp cd /tmp/ppsspp wget https://dl.khadas.com/repos/debs/vim4/jammy/ppsspp/ppsspp_1.12.3-1138-g36bc7a3e6~jammy_arm64.deb sudo dpkg -i ppsspp_*.deb text/html 2022-07-13T05:39:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/qt5?rev=1657705147&do=diff VIM4 QT5 text/html 2022-09-07T02:18:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/sdl2?rev=1662531513&do=diff VIM4 SDL2 Only support Ubuntu 22.04 Gnome desktop. Introduction The Ubuntu 22.04 Gnome desktop is hardware accelerated with wayland GPU, so you can use SDL2 with GPU by default on desktop. Install SDL2 Packages sudo apt update sudo apt upgrade sudo apt install libsdl2-2.0-0 libsdl2-dev text/html 2022-09-28T08:59:49+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/start?rev=1664369989&do=diff vim4 VIM4 Application Note applications index text/html 2023-10-20T23:48:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/vulkan?rev=1697860116&do=diff VIM4 Vulkan on Wayland VIM3 VIM3L VIM4 VIM1S with Ubuntu 22.04/24.04 Gnome Desktop and Wayland with 5.15 kernel supports Vulkan, you can follow this documentation to test Vulkan. Only for VIM3/3L/4/1S with 5.15 kernel with Ubuntu 22.04/24.04 Gnome Desktop and Wayland. text/html 2022-07-14T21:15:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/watchdog?rev=1657847734&do=diff VIM4 Watchdog Internal Watchdog Introduction This page introduces the internal Watchdog. You will learn how to enable the watchdog and test it. Enable Internal Watchdog Watchdog is disabled by default, use the commands below to enable it. sudo ln -s /lib/systemd/system/watchdog.service /etc/systemd/system/multi-user.target.wants/watchdog.service sudo systemctl enable watchdog.service sudo systemctl start watchdog.service text/html 2025-05-15T06:30:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://docs.khadas.com/products/sbc/vim4/applications/wifi-sta-ap-mode?rev=1747305055&do=diff VIM4 Wi-Fi STA/AP Mode Configuration Overview This guide explains how to configure dual Wi-Fi mode using the provided script (v1.0), enabling simultaneous operation in: STA+AP Mode: wlan0 as STA (connects to existing Wi-Fi) + wlan1 as AP (creates hotspot)