The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Hardware’ Category

TTN Coverage

Posted by jpluimers on 2026/07/01

Reminder to self: check if [Wayback/Archive] TTN Coverage survived, I didn’t use it that often, but it was very useful to figure out where LoRaWAN nodes of The Things Network are located.

Thread:

  1. [Wayback/Archive] TTN Mapper – time to shut down? – Page 1 – TTN Network and Services – The Things Network
  2. [Wayback/Archive] TTN Mapper – time to shut down? – Page 2 – TTN Network and Services – The Things Network
  3. [Wayback/Archive] TTN Mapper – time to shut down? – Page 3 – TTN Network and Services – The Things Network

--jeroen

Posted in Hardware, IoT Internet of Things, LifeHacker, LoRa - Long Range wireless communications network, Network-and-equipment, Power User | Leave a Comment »

SwiftOnSecurity on Twitter: “If you are building a home lab everything you need is on eBay and costs around $200. A SSD SATA drive in a off-lease Optiplex delivers more IOPS than an $100k server with a RAID6 we ran DBs on 10 years ago….”

Posted by jpluimers on 2026/06/22

I used to buy off-lease HP gear some 15 years ago. Nowadays I usually buy Dell 1 liter PCs for desktop usage (see my series on 3060/5060/7060) and got reminded that they also have good workstation gear that you can rackmount:

Read the rest of this entry »

Posted in Dell Optiplex 3060/5060/7060 Micro, Hardware, HP XW6600, LifeHacker, Power User | Leave a Comment »

I can control all your computers – Jeff Geerling YouTube

Posted by jpluimers on 2026/06/19

[Wayback/Archive] I can control all your computers – YouTube was the first playful title now known as I tested EVERY single IP KVM – YouTube.

The video is a cool compilation of all the recent (last decade) IP KVM products Jeff has tested so far, which of course started with the Pi-KVM that opened the market from old and expensive IP KVM products.

Table of Contents:

Read the rest of this entry »

Posted in Hardware, KVM keyboard/video/mouse, PiKVM / Pi-KVM, Power User | Leave a Comment »

Achtenveertig – Gewoon een of andere WordPress website (over Domotica, ESP8266, Linux, Vinyl)

Posted by jpluimers on 2026/06/17

Voor mijn linkarchief:

[Wayback/Archive] Achtenveertig – Gewoon een of andere WordPress website

Via [Wayback/Archive] Ronald (@Ronald@mastodon.nl) – Mastodon.nl

–jeroen

Posted in *nix, *nix-tools, Development, Domotics/Smarthome, ESP8266, Hardware, Hardware Development, Linux, Network-and-equipment, Power User | Leave a Comment »

The manufacturer of 18650 lithium-ion battery cells matters a lot: The Lumafield Battery Quality Report

Posted by jpluimers on 2026/06/09

A very important report from September 2025 for users of 18650 lithium-ion battery cells: [Wayback/Archive] The Lumafield Battery Quality Report.

Summary:

… beneath the surface, a hidden world of quality control issues and dangerous counterfeits puts consumers and manufacturers at risk.

Our automated analysis focused on key indicators of cell safety and quality, including anode overhang (AOH) and edge alignment, two critical factors that directly impact battery performance and safety.

Flawed anq quality battery cells:

Read the rest of this entry »

Posted in 18650, Batteries, Development, Hardware, Hardware Development, Li-Ion, Power User | Leave a Comment »

MeshCore – Off grid mesh radio communications system

Posted by jpluimers on 2026/06/02

In a world where it becomes increasingly important to think and act on situations where for various communication via traditional means is not that easy any more, then LoRa (Long Range) wireless networks have been steadily gaining ground: they use open frequencies and for some of these networks, their repeater structure is largely ran by communities of volunteers.

Both communities and devices have evolved so far that its not just for early adopters any more: mere mortals can use it too.

In the LoRa area, MeshCore looks to have become the successor of Meshtastic:  [Wayback/Archive] MeshCore – Off grid mesh radio communications system.

The core difference between these two LoRa networks is explained in the Wikipedia article on MeshCore:

MeshCore is often compared with other LoRa-based mesh networking systems such as Meshtastic. While Meshtastic primarily relies on broadcast-style message flooding, MeshCore emphasizes structured routing roles and store-and-forward mechanisms, resulting in different scalability and energy-consumption characteristics.

Communication over the MeshCore network reminds me a lot of three things, in this chronological order:

I think about everything of MeshCore is open source; mostly hosted in the hierarchy at [Wayback/Archive] MeshCore · GitHub.

MeshCore is fairly young which means it will have growth pains, and some hardware pains (like a node being limited to about 500 messages/hour because of physical bandwidth limitations – smaller cells work better than the FidoNet hub/spoke model – see the Dutch section below) but it also cool to see it evolving.

This blog post is going to be long, as a lot of MeshCore information is spread around the interwebz, so there is a lot to link to.

Read the rest of this entry »

Posted in Development, Hardware, IoT Internet of Things, LoRa - Long Range wireless communications network, Network-and-equipment, Power User, Python, Scripting, Software Development, Solar Power | Tagged: , , , , , , , , , , , , , | Leave a Comment »

Elektronik-Idee – CP740BMW – USB wireless MP3 Player (with Bluetooth and Audio/Video in support)

Posted by jpluimers on 2026/06/01

Cool: MOST bus based [Wayback/Archive] Elektronik-Idee – CP740BMW – USB wireless MP3 Player for various BMW models which also does Bluetooth, and Audio/Video in (English link: [Wayback/Archive] Elektronik-Idee – CP740BMW – USB wireless MP3 Player). Via:

Manuals Read the rest of this entry »

Posted in Audio, Bluetooth, cars, E61 530xd touring, LifeHacker, Power User, Video | Leave a Comment »

Your presenter might not be dead, and a stupid USB cable with large plug needed to “Charge the Logitech Spotlight presentation remote”

Posted by jpluimers on 2026/05/29

A follow-up on my previous post on Logitech presenters: Logitech remotes for presenting

Did my Logitech Spotlight die, or did the charging cable die?

I had not presented for a couple of years because of my cancer. So I tried to recharged my hardly used Logitech Spotlight presenter. No light would turn on. I thought it was the USB cable being broken.

[Wayback/Archive] Logitech Spotlight presentation remote LED status indicator

Read the rest of this entry »

Posted in Hardware, KVM keyboard/video/mouse, LifeHacker, Power User | Leave a Comment »

Be careful running Proxmox with Samsung SSDs

Posted by jpluimers on 2026/05/22

In 2016, Proxmox within 6 months caused so many media errors on a Samsung MZ-7KE2T0BW 850PRO SSD 2TB that I had to RMA it. A year before that, a friend has similar issues with Samsung SSDs as well.

Other Samsung products seem to suffer with Proxmox when NCQ is enabled [Wayback/Archive] 201693 – Samsung 860 EVO NCQ Issue with AMD SATA Controller.

Reminded because of [Wayback/Archive] corbosman on Twitter: “@jpluimers That might be because of excessive logging. But sure, it’s relatively old but still relevant if you own this specific combination of hardware. For me the workaround was not turned on automatically.”.

–jeroen

Posted in Hardware, Power User, Proxmox, SSD, Trim, Virtualization | Leave a Comment »

SABRENT USB Charging Station 252 W 8-Port PD 3.0 with LCD Display – GaN Charger Charger – Fast Charging Station for USB-C & USB-A Devices, Laptops, Smartphones – PPS, Overcharge Protection: Amazon.de: Computer & Accessories

Posted by jpluimers on 2026/05/08

This is a cool device as explained in the below video: [Wayback/Archive] SABRENT USB Charging Station 252 W 8-Port PD 3.0 with LCD Display – GaN Charger Charger – Fast Charging Station for USB-C & USB-A Devices, Laptops, Smartphones – PPS, Overcharge Protection: Amazon.de: Computer & Accessories

Despite good, I put this comment below the video:

Read the rest of this entry »

Posted in ElectricPower, Hardware, LifeHacker, Power User, PSU, USB, USB-C | Leave a Comment »