Linux 6.10 Release Changelog
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Linux 6.10 Release – Notable changes, Arm, RISC-V, and MIPS architectures

Linux Torvalds has announced the release of Linux 6.10 on LKML: So the final week was perhaps not quote as quiet as the preceding ones, which I don’t love – but it also wasn’t noisy enough to warrant an extra rc. And much of the noise this last week was bcachefs again (with netfs a close second), so it was all pretty compartmentalized. In fact, about a third of the patch for the last week was filesystem-related (there were also some btrfs latency fixes and other noise), which is unusual, but none of it looks particularly scary. Another third was drivers, and the rest is “random”. Anyway, this obviously means that the merge window for 6.11 opens up tomorrow. Let’s see how that goes, with much of Europe probably making ready for summer vacation. And the shortlog below is – as always – just the last week, not some kind […]

Linux 6.9 release
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Linux 6.9 release – Main changes, Arm, RISC-V, and MIPS architectures

Linus Torvalds has just announced the release of Linux 6.9 on LKML: So Thorsten is still reporting a few regression fixes that haven’t made it to me yet, but none of them look big or worrisome enough to delay the release for another week. We’ll have to backport them when they get resolved and hit upstream. So 6.9 is now out, and last week has looked quite stable (and the whole release has felt pretty normal). Below is the shortlog for the last week, with the changes mostly being dominated by some driver updates (gpu and networking being the big ones, but “big” is still pretty small, and there’s various other driver noise in there too). Outside of drivers, it’s some filesystem fixes (bcachefs still stands out, but ksmbd shows up too), some late selftest fixes, and some core networking fixes. And I now have a more powerful arm64 machine […]

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SONOFF POW Ring smart power meter
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$35 SONOFF POW ring smart power meter (POWCT) safely supports up to 100A

SONOFF POW Ring smart power meter is the first CT clamp-based WiFi power meter from ITEAD. It is designed for installation in an electric cabinet to measure whole-house power consumption with up to 100A current. The power meter relies on an ESP32 microcontroller for control and wireless connectivity with a range of up to 130 meters thanks to an external high-gain antenna. It is supported by the usual eWelink mobile app that also enables integration with Google Home, Amazon Alexa, and IFTTT services, and ITEAD also mentions integration with the Home Assistant open-source framework. SONOFF POW Ring (POWCT) specifications: MCU – ESP32 WiFi and Bluetooth microcontroller Connectivity – 2.4 GHz WiFi 4 (802.11b/g/n) with SMA antenna connector for an external antenna to be placed outside of the electrical cabinet Current transformer (CT) interface type – RJ9 Current transformer detection range – 0 to 100A Measurement category – CAT II 0-100A […]

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MT87 Digital Clamp Multimeter Hands On

When you want to measure power/current on electrical device, a kill-a-watt is the easiest method, but it’s not always possible for items like air conditioner, water pumps, etc… because they may simply be no plug to disconnect. Luckily, current clamps are made just for this purpose, where you simply place one of the two wires in a clamp / loop, and it magically measures the current.  You can’t put both wires inside the loop or measurement will not work at all. The good news is that such devices are very inexpensive, and I bought MT87 digital clamp multimeter, which is also a multimeter adding voltage and resistance measurement capability, for just $11.33 on DealExtreme. MT87 comes with measurement leads (voltage/resistance only), and a user’s manual. The linked user’s manual is not exactly the same document, but very similar, and also refers to MT87C model which adds temperature measurement. There are […]

Energy Meter for Home Assistant
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Home Assistant-compatible Makerfabs ESP32-S3-based energy meter features BL0942 energy metering IC

The Energy Meter for Home Assistant is an ESP32-S3-based single-phase energy monitoring and control module designed to work with Home Assistant via ESPHome. It measures real-time power and energy consumption and also has a remote on/off control. The device is built around the BL0942 calibration-free energy metering IC, which supports voltage, current, power, and energy measurements with less than 1% error. It operates directly from AC 100–240V, includes an onboard 15A relay for switching loads, and provides electrical isolation for safety. Connectivity is done through USB and Wi-Fi using ESPHome for easy firmware flashing, API encryption, and automatic discovery in Home Assistant. These features make it suitable for smart homes, DIY energy monitoring, smart sockets, home energy dashboards, and automation projects. Energy Meter for Home Assistant specifications: Core module – Espressif Systems ESP32-S3-WROOM-1 SoC – ESP32-S3 CPU – Dual-core Tensilica LX7 up to 240 MHz with vector extension for AI/ML workloads […]

Raspberry Pi 5 IPEM Power Energy Monitor
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Ditronix’s IPEM PiHat turns your Raspberry Pi into a mains power energy monitor (Crowdfunding)

The IPEM PiHat is a HAT (Hardware Attached on Top) board for the Raspberry Pi that turns the single-board computer into a mains power energy monitor with four CT clamps. It provides an accurate way to track energy usage in home, office, and solar energy systems and is compatible with single-phase, two-phase, and three-phase electrical systems. The Raspberry Pi-based power energy monitor uses CT (current transformer) cable clamps to sample and measure data which can be used to report and analyze electric energy usage. This data can be used to save and divert energy to reduce costs and inefficiencies. The system is easy to set up and does not require a professional electrician. It uses a CT current clamp clipped over the building’s main power cables and connected to the local mains circuit for voltage and frequency measurement. The add-on board comes in two variants: IPEM PiHat and IPEM PiHat […]

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Creality Falcon A1 Pro review
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Creality Falcon A1 Pro Review – An easy-to-use, fully enclosed 20W laser engraver with a built-in HD camera

Creality has sent a review sample of the Falcon A1 Pro fully enclosed laser engraver and cutting machine. It’s designed to be easy to use out of the box since it’s mostly pre-assembled. It is equipped with a 20W blue laser and can engrave and cut a wide variety of materials such as cardboard, wood, bamboo, rubber, leather, fabric, acrylic, plastic, and more. It notably supports cutting 10 mm thick basswood and 8 mm thick black acrylic. The machine can engrave materials at a speed of up to 600 mm/s, and offers smart features such as auto focus, real-time flame detection, and an HD camera for accurate workpiece positioning. It’s compatible with a range of laser engraving software, such as LightBurn and LaserGRBL for Windows and macOS, but we’ll use Falcon Design Space in this review. Creality Falcon A1 Pro Laser Engraver Specifications Main laser module Laser power – 20W […]

LUNYEE 4040 Pro CNC review
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LUNYEE 4040 PRO CNC router review with Candle software

LUNYEE has sent us a review sample of the 4040 PRO CNC router, featuring a larger work volume than the LUNYEE 3018 Pro Ultra model we reviewed a few months ago. It is designed for milling and engraving tasks that demand high precision and features a robust structure to support continuous operation. It works with wood, plastic, and acrylic. Its standout feature is the complete set of accessories, such as the Probe system for Z-axis setup and a workpiece clamping kit, allowing users to get started right away. This makes it an ideal CNC Router for beginners in engraving work. We’ve previously reviewed the smaller 3018 Pro Ultra with Easel, but we’ll instead use Candle software on the 4040 PRO machine. LUNYEE 4040 PRO CNC router specifications Controller – 4-axis GRBL 1.1f-compatible controller based on GigaDevice GD32F303CCT6 Arm Cortex-M4 MCU @ 120MHz with 256KB flash, 48KB SRAM. Control Software – […]

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