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Senior Linux Engineer (full-timer and freelancer) Location Shenzhen China and/or remote collaboration ​ Responsibilities Linux-based OS development: design system architecture, planning, development, improvement, maintenance Documentation: Create and maintain documentation Provide guidance and leadership to less experienced engineers, share knowledge with junior team members, and collaborate with other teams to ensure the transfer of expertise Qualifications and Experience Mandatory skills English: strong written and verbal communication skills Education: Bachelor's degree or higher in computer science is preferable, electrical engineering, or a related field At least 5 years of Linux experience Good interpersonal and communication skills Basic Linux and Linux-Kernel programming skills Technical writing and documentation skills Knowledge of Linux environment & architecture Strong shell scripting skills Basic Git usage skill Knowledge in at least one upper-tier scripting language like Python, Perl, JS Linux system management, setup, configuration, hardening, backup, recovery, etc... Familiar with main Linux distros Familiar with x86 and ARM platform Experience with Single Board Computers - basic understanding of components such as the SoC, UART, GPIO, i2c, SPI, BROM, MMC ... Able to build Linux from scratch Desirable Skills Basic system & network security skills Virtualization & containers: QEMU KVM Xen Docker etc ... Network stacks: HTTP, TCP, UDP, SSH, RSYNC, FDTP, SFTP etc Network traffic analysis Basic client/server programming skills Basic WEB programming HTML, JS, CSS, etc Good experience with WEB servers: like Nginx, CGI, FastCGI, Websockets Familiar with the OpenWRT environment English native speaker Basic Mandarin skills (EN/CN bilingual) What We Offer Khadas is an international company that: Offers you a competitive salary Is fast-growing and constantly evolving. You’ll never get bored! Thinks different, acts different, is different and makes a difference Develops superior-quality and high-performance products Daily tea-time at 16:00 with lots of snacks, healthy fruit and fun activities Yearly company trips Monthly team dinners ​ Please send your resume to nick@khadas.com and let us know if you are applying for full-timer or freelancer.

Career Below you can find our open positions. Are you interested in one of the positions? Then click on the job title to know more and who knows you will become a new team member of us! Overseas Account Manage Overseas Account Manager Overseas SEO Strategist and Copywriter Senior Linux Engineer Overseas Social Media Manager and Content Creator

Edge Add-ons Edge RK3399 Captain Carrier board for Edge. Edge-IO Add GPIO pin-outs and a TF Card slot. Edge Heatsink Heatsink for Edge. 3705 Cooling Fan Cooling fan for Edge and Edge-V. USB-C 24W Adapter USB-C power delivery 24W adapter. USB-C Cable Connect Edge to a 24W power adapter. Edge - V RK3399 3705 Cooling Fan Cooling fan for Edge and Edge-V. New VIM Heatsink New heatsink for Edge-V, VIMs. Passive VIM Heatsink Passive heatsink for Edge-V, VIMs. Tone Board VIM's Toneboard for Hi-Fi audio. New M2X Extension SSD adapter for Edge-V. TS050 Touch Screen 5-inch, 1080P, 5-point multi-touch. 13MP IMX214 Camera MIPI-CSI compatible camera. Juice Board Attach a Li-Po battery to Edge-V. RTC Battery Real-time-clock battery module. USB-C 24W Adapter USB-C power delivery 24W adapter. USB-C Cable Connect Edge to a 24W power adapter. Captain Carrier Board for Edge Kap Case DIY your own Edge Mini PC! 13MP IMX214 Camera MIPI-CSI compatible camera. LiPo Battery Cell Lithium polymer battery for Captain. TS050 Touch Screen 5-inch, 1080P, 5-point multi-touch. RTC Battery Real-time-clock battery module. 12V Adapter 12V, 2A barrel adapter for Captain.

Overseas Social Media Manager and Content Creator (full-timer and freelancer) Responsibilities Plan, execute and manage content for overseas social media marketing channels (YouTube, Facebook, Instagram, Twitter, etc.) Optimize the performance of social media marketing campaigns, including key metric tracking, metric analysis and campaign optimization Develop successful social media strategies, ensure brand awareness and followers' engagement Develop monthly social media calendar Ensure the content cohesive with the brand strategy on all the social media channels Monitor and report social performance Provide post-campaign reports and all social media related activities analysis Coordinate cooperation with KOCs/KOLs This position reports to the Brand and Marketing Manager Qualifications and experiences Bachelor’s Degree or higher preferred 3+ years solid social media marketing work experience in relevant field High level of English, both written and verbal. Native English speaker preferred, Chinese would be a plus Experienced in developing social media content, campaigns and ensuring the execution with measurable indicators. Strong understanding of social media landscape, various platforms and trends in the global market Hands-on knowledge of Facebook Business Manager, other paid social platforms, Google Analytics and 3rd party social media marketing software Strong data analytics comprehension, forecasting skills, advanced excel and powerpoint user Nice to have Proficiency in additional languages (e.g. Chinese, French, Spanish, German, Italian, etc.) Agency experience Knowledge of the North American and/or Western European market Experience in photography Experience in videography Knowledge of photo and video editing software Who are you? Excellent interpersonal skills at all levels in a professional and mature manner Ability to work both independently and in a team Self-driven, highly methodical, data-driven, analytical, detail orientated and getting-things-done mentality Respectful, energetic and an ambitious entrepreneurial mindset Problem solver, creative thinker (you find opportunities in everything), always eager to learn and adaptable Hands-on, proactive, prioritize tasks, manage multiple projects at a time and meet deadlines Efficient organization and good time management What we offer Khadas is an international company that: Offers you a competitive salary. Is fast-growing and constantly evolving. You’ll never be bored! Thinks different, acts different, is different and makes a difference. Develops superior quality and high-performance products. Has tea-time at 16:00 with a lot of snacks of healthy fruit or activities. Has an international environment with colleagues from all around the world. Brand and Marketing manager is from The Netherlands. Has yearly company trip. Has team dinner once a month. ​ Please send your resume to career@khadas.com and let us know if you are applying for full-timer or freelancer.

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VIM1S Amlogic S905Y4 SBC with OOWOW and AV1 4K60 decoding Buy Now 4K@60fps AV1 Decoder Co-Processor UHS-I SD Card Embedded Service Faster CPU Performance 2.0GHz Quad Core Cortex-A35 CPU utilizing the 12 nanometer lithography process GPU Performance ARM Mali-G31 MP2 GPU up to 850MHz, 4K@60fps AV1, VP9, H.265 Decoder, Supports Multi-video Decoding up to 4x 1080P@60fps, HDR10, HDR10+, HLG HDR Video Processing * The DIY Case for VIM1S is sold separately. Description VIM1S is the successor to our popular VIM1. Since it debuted in 2016, the VIM1 single board computer has been the mainstay of OEM and Maker customers for over 6 years. Its affordable price, power-efficient design and credit-card size made VIM1 a popular choice for almost any project. The VIM1S continues the legacy of VIM1 with an upgraded Amlogic S905Y4 SoC, powered by x4 2.0GHz Cortex-A35 CPUs. The inbuilt GPU supports AV1, HDR10, HDR10+, HLG HDR video processing and is capable of simultaneous multi-video decoding. In accordance with customer demands, VIM1S includes a 40-pin GPIO, hardware RTC (real-time clock) and VIN port for a 5V external power supply. In accordance with current market demands, VIM1S now supports UHS-I SD cards, AV1 video decoding and a large 32MB SPI Flash. Performance Geekbench TF Card Speed OOWOW is a standalone embedded service for seamless online OS delivery, device maintenance, and much more! OOWOW is developed and maintained by Khadas Team. It makes system installation much easier. You can download and install your preferred OS directly from the Cloud. OOWOW will start automatically if the device storage is empty, with OOWOW you will always be in control of your VIM1S. ​ Learn More: https://docs.khadas.com/oowow Multi OS VIM1S supports a wide range of popular open source operating systems; most such as Ubuntu and Android. It provides a reliable and stable software environment for product development and production. Use Cases Mini Computer Use VIM1S like a mini computer at home, the office, or in your car. Nano Server Install a server OS, and run web services, a file server, and more. Computing Cluster Network VIM1S SBCs to make a computing or server cluster. HTPC Install a media OS for watching movies and TV Interfaces Specifications SoC: 2.0GHz A35 x4 850MHz ARM Mali-G31 MP2 MAX Resolution of Decoding up to 4K@60fps Interface: Ampak AP6256 Wi‑Fi 5 UHS-I Speed Class TF card, Max to 74 MB/s HDMI2.1, Max Resolution up to 4K2K@60fps 40-pin 2.54mm GPIO Header Storage: 1176MHz 2GB 32-bit LPDDR4 16GB eMMC Khadas Only: Khadas TST Khadas KBI OOWOW Fenix Full Specs Resources Forum Docs Download Github Add-ons Expand the c apabilities of y our VIM1S SBC. Quick View VIM1S Quick View DIY Case2 Quick View Passive VIM Heatsink Quick View New VIMs Heatsink 1 2 3 4

Shenzhen Wesion Technology Co., Ltd is the company that owns the brand "Khadas", our company was founded on 5 November 2014. The brand name "Khadas" was first registered on 29 August 2016. We focus on developing, manufacturing and marketing Amlogic and Rockchip single board computers (SBCs) for the open source community and streaming media player industry. Lately we've also added audio products like the Tone2 Pro Hi-Fi DAC and Khadas balanced RCA connectors to our line-up. In addition to retail, Shenzhen Wesion Technology Co., Ltd. also handles OEM/ODM product design, software and hardware development, as well as final product manufacturing and delivery to the point of use or sale. If the client wishes, we can carry out industrial design for both the internal PCBA support structure, as well as the external product enclosure. We warmly welcome OEM/ODM orders from all around the world. Not only do we offer clients complete products (various PCBA designs may be chosen), we also provide the service of developing custom PCBAs for different areas of industry (can be based on existing Khadas products or an entirely bespoke design). Many types of industrial devices can be developed, limited only by your imagination. Contact Shenzhen Wesion Technology Co., Ltd. with your OEM/ODM request , or partner with us as a distributor of retail products. Company Name (English): Shenzhen Wesion Technology Co. Ltd. Company Name (Chinese): 深圳市世野科技有限公司 Company ID: 914403003195782342 (China) Our Mission Think different, act different, be different, and make a difference. Khadas develops superior quality, high performance single board computers for makers, developers, and tinkerers, that come with open source, professional technical support, and a global community for issue discussion & idea sharing. Khadas aspires to help the Maker Community grow by achieving their ideas and dreams step by step. Download PDF our mission Our History our history 2020 Khadas Tone2 Pro Worthy successor to our famous Khadas Tone1 DAC. The Tone2 Pro incorporates balanced audio, a headphone amplifier and MQA support, in addition to crystal-clear audio. 2019 Khadas VIM3 The world's first single board computer equipped with Amlogic's powerful A311D SoC, that contains an integrated 5.0 TOPS neural processing unit (NPU), for deep learning applications. 2018 Khadas Edge & Edge-V Khadas Tone1 Two SBCs based on the RK3399 SoC was released on Indiegogo in October. ​ The Tone1 was officially released, making rapid headway into the HiFi audio market, paving the way for smart voice products. 2017 Khadas VIM2 Our second Khadas branded product. VIM2 was selected by Google as one of the first supported development platforms for the Google Fuchsia operating system. 2016 Khadas VIM1 Introduction of our first Khadas branded single board computer, the VIM1. It made a big splash due to its affordable price and diminutive size, measuring no larger than a credit card.

Edge Expandable Rockchip RK3399 SBC Buy Now Edge Connector Use its 314 gold fingers to dock with shields / carrier boards. Battery Header Edge can connect to external Lithium Polymer batteries. USB-C P.D USB-C Power Delivery allows the RK3399 SoC to reach full power. FPC Connectors Dual FPC connectors for connecting with accessories. USB-C D.P Connect to external displays via USB-C Display Port. Edge Connector 314 pin gold fingers for power & data Bi-Directional Data ​Edge can be easily stacked into a cluster. Electrical power can be drawn directly from the edge-connector. Bi-Directional Power Edge can be powered via the edge-connector, or it can deliver power to an external board the same way.​ Dock with the Captain The edge-connector lets you modularly expand the features & capabilities of your Edge SBC. Dock with the Khadas Captain or design your own carrier board. Edge software can be configured to automatically recognise your carrier board. FPC Connectors Connect 2 accessories via FPC-A & FPC-B Edge-IO Edge-IO connects via FCP-A to add GPIO + TF Card support for Edge. Thin is cool Edge is just 10.1mm thick with heatsink + fan Edge Heatsink + 3705 Cooling Fan The bare-board Edge is extremely thin, measuring at just 5.7mm. With the addition of a heatsink and super-silent 3705 cooling fan, its just 10.1mm thick. Interfaces Edge has a plethora of ports and I/O Specifications [1] MCU: For programmable power on/off, hardware encryption EEPROM, boot media(SPI Flash or EMMC) setup, KBI etc. [2] We only use Samsung / Skhynix memory for all Khadas products, other lower cost solutions are available for ODM & OEM. [3] RSDB: Real Simultaneous Dual Band, lets Edge and other devices transceive data over two bands at the same time. [4] Edge can support dual independent display over USB-C, HDMI, eDP or MIPI Add-ons Connect with accessories to do more Quick View Edge2 Quick View Edge Quick View Edge-V Quick View M2X WWAN Extension 1 2 3 4 5

2021 Khadas Community Competition Sample Request Form Thank you for participating in our Khadas Community Competition for 2021! To request for free single-board-computers and accessories to aid in your project development, please read the guidelines below: For team entries, please provide your Team Leader’s contact information and email address. When your project can be defined by more than one category, the main category should be written first. For example, "Software Design / Audio Design", Software is the main category, and Audio is the subcategory) Within your brief project introduction, describe your project plan, the functions of your device, the expected results, etc. If you are a student, please provide your student certificate or card as a picture. You will need to provide a 50% deposit for samples (30% for students). After the competition is concluded, the deposit will be refunded regardless of whether it has won a prize or not. Are you a student or student team? No Yes Upload Student Identification Upload supported file (Max 15MB) Request Request Received!

Frequently Asked Questions Why does Windows require the Khadas USB driver? The Khadas USB driver provides ASIO support and removes the latency and sample rate conversion issue experienced with the default Windows USB driver for DACs. What does MQA stand for? MQA(Master Quality Authenticated) is an award-winning audio codec technology. The master MQA file is fully authenticated for high sample rate audio and is small enough to stream and download. What is balanced-RCA? A new balanced audio connector standard, designed by Khadas for small form-factor desktop DACs. It is backwards compatible with standard RCA plugs and cables, more details visit https://khadas.com/balanced-rca How do I use my existing XLR-3 equipment with Balanced-RCA? Purchase the Khadas Balanced-RCA to XLR-3 adapter, it is a male Balanced-RCA plug connected to a male XLR-3 plug. What is the maximum headphone impedance supported by Tone2 Pro's headphone amplifier? 3.5mm Single ended: 150ohm 4.4mm Balanced: 300ohm How do I use “S/PDIF” input? Attach a standard RCA cable to the orange-coloured RCA jack, and set the input mode to “S/PDIF”. Alternatively, set the input mode to “AUTO”and stop music playback from other sources. How do I connect my smartphone to Tone2 Pro via Bluetooth? Attach a Khadas bluetooth module to the USB-C (I2S) port, and set input mode to “I2S” or “Auto”. Why doesn’t my USB-C to Lightning charging cable work with the Tone2 Pro? Connect an Apple C78-USBH Lightning to USB-C cable to Tone2 Pro’s USB-C (USB) port for data communication, then connect a 5V power source to the USB-C (I2S) port. Can the USB-C input be used with the USB-C output of Android phone? Yes, Tone2 Pro can be powered by most Android smartphones via USB-C. Does the Tone2 Pro support native DSD decoding? Yes, DSD512 native decoding can be enabled by installing the Khadas USB driver. What is the voltage level of the Balanced RCA connection? 4.0Vrms for balanced RCA mode, and 2.0Vrms for standard RCA mode (single-ended). What are the priorities when input mode is set to “Auto”? Priority from high to low: Bluetooth, USB ( disconnect the Bluetooth module) , and finally “S/PDIF” (the USB-C cable must still be attached to supply power). How can I play MQA music? one2 Pro supports full hardware decoding of MQA data. Stream or play music from a software or app that contains music that uses MQA encoding. Visit mqa.co.uk/how-it-works to learn about MQA-supported software and apps. When inserting headphones during RCA output playback, will RCA playback be interrupted or will it play through both RCA and headphones concurrently? The RCA playback will not be interrupted, Tone2 Pro will play through both RCA and headphone jacks concurrently. Can I use the Tone2 Pro to receive a signal from the TV via coaxial and send it to the amplifier via RCA? Yes. Set the input mode as “S/PDIF” or “Auto”, Tone2 Pro will output to both the RCA and headphone jacks. ​ < Tone2 Pro

VIM1 Amlogic S905X ARM64 Development Board Buy Now Amlogic S905X SoC 1.5GHz 64-bit Quad-Core ARM Cortex-A53 SoC Mali-450 GPU HDMI 2.0a with 4K H.265/VP9 10bit & HDR10 Video Processing Flexible Connectivity USB Type-C for power, and USB 2.0 OTG support Maker Friendly Built-in RTC, VIN-port, 40-pin GPIO, x3 user buttons, hardware encryption ​Multi-OS Android 7.1 pre-installed, Android 8.0, LibreELEC, Ubuntu 18.04 and Buildroot Built-in Memory 2GB DDR3 RAM, and up to 16GB EMMC-V5.0 storage Built-in Wi-Fi AP6212 b/g/n or AP6255 802.11b/n/g/ac, with Bluetooth 4.2 ​Tiny Form Factor Thin and light with the dimensions of a credit card Description VIM1 is the original Amlogic S905X ARM development board designed by Khadas for hobbyists, makers and electronic fans; many also affectionately refer to it as an “Open Source TV Box”. It is tiny, slightly smaller than a Raspberry Pi with dimensions similar to that of a credit card. VIM1 is only available in two versions: VIM1 Basic with 8GB EMMC storage and AP6212 (b/g/n) Wi-Fi, and VIM1 Pro with 16GB EMMC storage and AP6255 (b/g/n/ac) Wi-Fi. Both versions have 2GB of DDR3 RAM and Bluetooth 4.2. Just like your familiar desktop computer, the VIM1 single board computer supports the booting of multiple operating systems. You can choose from a variety of OS images (ROMs) from our Khadas Docs or Community Forum. Popular OSes include: Android 7.1 / 9.0, Ubuntu 18.04, LibreELEC, Armbian, Buildroot, and so on. There are even dual-boot images, for developers to boot both Android and Ubuntu from the same EMMC. Developers will find the built-in 40-pin GPIO, real-time-clock (RTC) and VIN port for an extra power supply, to be very handy. In addition, the three user-buttons on the side provide easy access to power, reset and function keys. Full open source code is available on Github, and hardware schematics can be found in our documentation. To top it all of, there’s even a built-in power control unit for supporting power-cycling via a remote control. ​ In comparison with the Octa-Core Amlogic S912 SoC in the VIM2, the Quad-Core S905X SoC in the VIM1 generates significantly less heat. This makes the VIM1 especially useful in environments that only allow passive air convection for heat dissipation, rather than forced airflow. In many instances, a single heatsink is sufficient, and some users may even find a heatsink unnecessary for their applications. Multi OS Built by the community, for the community. How to Install ​Software Execute essential software for developers Learn More Use Cases Mini Computer Install a desktop OS like Ubuntu and run Open Office, and more. TV Box Install a media OS like LibreELEC for watching movies and TV. Nano Server Install a server OS, and run web services, a file server, and more. Development Android 7.1 / 8.0, Docker, Buildroot and Fenix for developers. Computing Cluster Network VIM1 SBCs to make a computing or server cluster. Interfaces Specifications [1] MCU: Power management, EEPROM for customization. [2] Khadas TST feature enables developers to enter upgrade mode easily, just press the function key 3 times in 2 seconds. [3] Fenix Script: One-click script for building Linux Distributions. Add-ons Expand the capabilities of your VIM1 SBC. Quick View DIY Case2 Quick View VIM1 Quick View New VIMs Heatsink Quick View Passive VIM Heatsink 1 2 3 4