How to upgrade a mini PC to Windows 11 and install WSL

Windows 11 WSL Ubuntu App

In this short article, I show how to install Windows Subsystem for Linux (WSL) and how to force the upgrade of Windows 10 to Windows 11 in a mini PC rather than waiting for Windows to offer it. The reason I’ve coupled these two topics together is not because there is any dependency, but simply as I use WSL to help me perform administrative tasks like downloading and copying files when installing applications on Windows mini PCs. WSL installation Installing WSL has recently become so simple it is worth doing just to gain the flexibility it offers for so little effort. Now you only need to open ‘Windows Terminal (Admin)’ and enter wsl –install: then reboot for Ubuntu to start installing, during which you will be asked to create your user with a password, which finishes in Ubuntu: Further information about installing WSL can be found in Microsoft’s documentation. Now […]

Windows Subsystem for Android introduced on Windows 11

Amazon Appstore Windows 11 Android apps

Following up on the company’s Windows Subsystem for Linux, Microsoft has now introduced the Windows Subsystem for Android that allows Windows 11 users to install Android apps either through the Amazon Appstore or the Microsoft Store. At this time, it is officially reserved for Windows Insiders part of the Beta Channel in the United States on eligible devices running Intel, AMD, and Qualcomm platforms, and at this time 50 apps are available with mobile games such as Lords Mobile, June’s Journey, or Coin Master, the Kindle app for reading books, and kids content that includes Khan Academy Kids and Lego Duply World. More apps are obviously planned, and as I’ll see later there are ways for any Windows 11 users to install Android apps. The Windows Subsystem for Android (WSA) is not installed by default, but it will be automatically installed if you either install the Amazon Appstore, the Amazon […]

How to fix “The device isn’t Play Protect certified” error message in Android

Android 11 Google Play Not-Play Protect certified

I’m currently testing Zidoo M6 with Android 11. The mini PC is mostly designed for industrial and commercial use cases, so it may not need to be certified by Google in order to access Google apps and services like a consumer device. But for review purposes, it can still be an inconvenience, as I got the message “The device isn’t Play Protect certified – Google apps and services can’t run on this device” when trying to use Google Play and login with one of my Google accounts. This does not look good, and Chrome, a Google app, refuses to work as well. I still tried to log in, but it just failed, returning an error telling me: “Your account wasn’t added. Try again”. That would mean I’d have to download the apps on my PC and sideload them with a USB flash drive. That’s not practical, and there’s must be […]

Heatshrink – An ultra-lightweight compression library for embedded systems

Heatshrink

When I wrote about Bangle.js 2 JavaScript smartwatch yesterday, I noticed they used “Heatshrink compression” in ESPruino firmware.  I can’t remember ever reading about Heatshrink before, and indeed there are no results while searching on CNX Software. Heatshrink is an open-source data compression library designed for resources-constrained embedded systems that works with as little as 50 bytes of RAM. That’s impressive, so let’s investigate. The library is written in C language and was released about 8 years ago on Github with the following key features: Low memory usage – As low as 50 bytes with specific parameters, and usually under 300 bytes are needed. Incremental, bounded CPU use – Input data is processed in tiny bites Static or dynamic memory allocation Released under an ISC license which allows you to use the library freely, even in commercial products. The internal workings of the library are explained as follows: Heatshrink is […]

Getting started with Bluetrum AB32VG1 RISC-V Bluetooth audio board using RT-Thread

Bluetrum AB32VG1 RISC-V Bluetooth audio board

Bluetrum AB32VG1 is a development board based on AB5301A RISC-V microcontroller designed for Bluetooth audio applications as well as general-purpose projects that works with RT-Thread real-time operating system. RT-Thread sent me a board for review, and I’ll write about my experience in a getting started guide for Bluetutm AB32VG1 trying out the RT-Thread Studio IDE with the LED blink and audio samples, as there’s no Bluetooth sample at this time… Bluetrum AV32VG1 Unboxing The board ships with a USB-C cable for power and programming. It offers Arduino UNO headers for expansion, a MicroSD card slot, a USB host port, a 3.5mm audio jack, an IR receiver, and a few buttons. There’s nothing to do on the bottom of the board apart from a QR Core for the WeChat app. There are also several configuration jumpers, but I could not find any documentation about these and did not mess with the […]

Your VGA monitor may be easier to repair than you think

Repair VGA monitor LG Flatron W1934S

When a VGA monitor does not start at all, a common reason is that one or two capacitors are damaged. All you need to do to repair it is to replace them, and you’re good to go. It’s quite easier than you think, and I’ll show you how. I was tasked with repairing a VGA monitor, namely an LG Flatron W1934S, that would not turn on anymore. All I could see what the blue power LED blinking regularly, about every two seconds. Since so far, I had a 100% success rate in failing to repair TVs, I was not confident, and I thought maybe the monitor is some special state making it not turn on, as it happened to me with another monitor a few years ago. But a web search revealed the problem was probably a power supply board issue with one of the capacitors damaged and, in theory, […]

How to use PinePhone as a mobile hotspot

PinePhone SIM Card MicroSD Card

I’ve recently started using my Android phone as a mobile hotspot with mixed results so instead, I’ve switched to using PinePhone as a hotspot with Manjaro Arm Linux with Plasma Mobile instead, and performance seems much more stable now. Early this year, I received Pinephone with PostMarketOS beta, and after playing with it a bit I did not do much with it so far. But in recent times, I’ve been staying in various places without WiFi, so I purchased a lost cost SIM card with a one-year cellular data plan to be able to work from any location using my Android 10 smartphone (Huawei Y9 Prime 2019) as a mobile hotspot. It works most of the time, but sometimes I have massive packet loss, and the only way to recover is to turn off and on the hotspot, and in some cases even reboot the phone. Playing with settings on […]

Coral Dev board news – NXP critical firmware update, manufacturing demo, and WebCoral in Chrome

WebCoral Coral USB Accelerator Chrome

Google Coral is a family of development boards, modules, M.2/mPCIe cards, and USB sticks with support with local AI, aka on-device or offline AI, based on Google Edge TPU. The company has just published some updates with one important firmware update, a manufacturing demo for worker safety & visual inspection, and the ability to use the Coral USB accelerator in Chrome. Coral firmware update prevents board’s excessive wear and tear If you own the original Coral development board or system-on-module based on NXP i.MX 8M processor, you may want to update your Mendel Linux installation with:

The update includes a patch from NXP with a critical fix to part of the SoC power configuration. Without this patch, the SoC might overstress and the lifetime of your board could be reduced. Note this only affects NXP-based boards, so other Coral products such as Coral Dev Mini powered by Mediatek MT8167S […]