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 »
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:
Posted in 18650, Batteries, Development, Hardware, Hardware Development, Li-Ion, Power User | Leave a Comment »
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.
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: 2, amstelland, analyser, bollenstreek, bot, burgernet, hamradio, kennemerland, leiden, meshcore, nl, noodkanaal, pingbot, test | Leave a Comment »
Posted by jpluimers on 2026/06/01
Musik und Nachrichten beim BMW-Fahren mit dem neuen Streaming Player CP740BMW für die Baureihen BMW E60, E61, E63, E64, E65 E66, E70, E71, E87, E88, E89, E90, E91, E92, E93
Music und messages while driving with the new Streaming Player CP740BMW For the series BMW 3,5,7,X,Z E60, E61, E63, E64, E65 E66, E70, E71, E87, E88, E89, E90, E91, E92, E93
Posted in Audio, Bluetooth, cars, E61 530xd touring, LifeHacker, Power User, Video | Leave a Comment »
Posted by jpluimers on 2026/05/29
A follow-up on my previous post on Logitech presenters: Logitech remotes for presenting
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
Posted in Hardware, KVM keyboard/video/mouse, LifeHacker, Power User | Leave a Comment »
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 »
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:
Posted in ElectricPower, Hardware, LifeHacker, Power User, PSU, USB, USB-C | Leave a Comment »
Posted by jpluimers on 2026/05/01
When undergoing cancer treatment, I missed the launch of [Wayback/Archive] Ventoy:
Ventoy is an open source tool to create bootable USB drive for ISO/WIM/IMG/VHD(x)/EFI files.
With ventoy, you don’t need to format the disk over and over, you just need to copy the ISO/WIM/IMG/VHD(x)/EFI files to the USB drive and boot them directly.
You can copy many files at a time and ventoy will give you a boot menu to select them.
Source code: [Wayback/Archive] GitHub – ventoy/Ventoy: A new bootable USB solution. (2020 new, that is, but for me it was actually new)
Wikipedia: Ventoy – Wikipedia
Note there is also [Wayback/Archive] iVentoy, which is a PXE boot tool, but only partially open source and if used commercially you need a license. See:
Posted in Boot, Hardware, KVM keyboard/video/mouse, LifeHacker, Power User | Leave a Comment »
Posted by jpluimers on 2026/04/27
Interesting blog post on patch panels for audio with XLR connectors and ethernet over twisted pair (best to use shielded cable): [Wayback/Archive] Analog Audio over Cat 5/6/7 – Building your own panels – YouTube.
--jeroen
Posted in 19-inch rack, Appliances, Audio, Ethernet, Hardware, Home Audio/Video, LifeHacker, Media, Network-and-equipment, Power User | Leave a Comment »
Posted by jpluimers on 2026/04/09
The display quality of [Wayback/Archive] Reflection Frame is nice, but the there was no public API at the time of writing, so I wonder if there is now.
Public API request initially denied at [WaybackSave/Archive] Reflection Frame: Digital Photo Prints by Creative Design Worx — Kickstarter:
Via [Wayback/Archive] Colour E-Ink Picture Frame – The Reflection Frame – YouTube.
--jeroen
Posted in Development, Hardware, Hardware Interfacing, IoT Internet of Things, Power User, Software Development | Leave a Comment »
The Wiert Corner - irregular stream of stuff 