Build Your Own Live NHL Scoreboard with Raspberry Pi!

In this episode, I’ll show you how to build your own DIY NHL scoreboard that automatically displays live game data for your favorite hockey team!

The purpose of this video is not only to combine hockey and technology, but to teach you how to work with and control LED panels using a Raspberry Pi computer. Armed with this knowledge, you can create all kinds of displays. 🙂 This is a very easy, mostly plug-and-play project that takes less than an hour to complete.

Optical Communication Using LEDs Alone

We’re all used to the humble LED as a ubiquitous source of light, but how many of us are aware that these components can also be used as photodiodes? It’s something [Giovanni Blu Mitolo] takes us through as he demonstrates a simple data link using just a pair of LEDs and a couple of Arduinos. It’s a showing off his PJON networking layer, and while you’d need a bit more than a couple of LEDs on breadboards for a real-world application, we still think it’s a neat demonstration.

PJON itself is very much worth a look, being an implementation of a robust and error-tolerant network for Arduinos and other small microcontroller platforms. It has a variety of communication strategies for various different media, and as this LED demonstration shows, its strength is that it’s capable of working through media that other networks would balk at. Whether it’s controlling home automation through metal heating ducts or providing an alternative to LoRa at 433 MHz, it’s definitely worth a second look. We’ve mentioned it before, but remain surprised that we haven’t seen it more often since. Take a look, the video is below the break.

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Hopping-Pong Redirects Ping Pong Balls Using Ultrasound Phased Arrays

Scientists at the University of Tokyo’s Shinoda & Makino Lab have designed an ultrasound phased array capable of changing the trajectory of a ping pong ball (PPB) in flight. While that doesn’t sound too interesting, the device has potential in many applications, including removing defective samples in food production, used in augmented sports, and changing the direction of an object thrown by humans, among a host of others.

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Upgrading Server 2016 to 2019 – Fixing “This version is not current / Windows 10” Error

Recently I started running through several of my Windows Server 2016 builds to do in place upgrades to Windows Server 2019.

During the install process, I would run into an error stating Windows 10 This Version is not current.
After reading several articles and patching all systems to current, I still ran into there error while trying to upgrade. I even tested several release builds of Windows Server 2019 media from Microsoft to no avail.

The Fix!

At the end of the day, no matter the version of Windows Server (Data Center, Standard, Core etc), the resolution was to disconnect the network cable. You can possibly get away with removing the gateway from the network settings, but for the most part you want to assure the machine has no internet connectivity.
In my case, as these are VM’s, I just disconnected the network adapter and re-ran the setup from the start.

Mobile Raspberry Pi with ANY iPad. No USB-C needed.

Following on my from earlier video about pairing the Raspberry Pi 4 with the iPad Pro over USB-C, this video show how to pair any iPad (or iPhone, or Android tablet) with a Pi4 or a Pi3 over WiFi.
Not only that, but this solution solves the problem of how to charge the iPad while using the Pi, and provides a really nice interface for working with WiFi while on the go.