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Hackaday Podcast Episode 364: Clocks, Cameras, and Free Will
This week, Hackaday’s Elliot Williams and Kristina Panos met up over assorted beverages to bring you the latest news, mystery sound results show, and of course, a big bunch of hacks from the previous seven days or so.
In the news, there’s quite a bit to talk about. Regarding Hackaday Europe, you can rest assured that the talks will be announced soon. The Green-Powered Challenge is still underway, and we need your entry to truly make it a contest. You have until April 24th to enter, so show us what you can do with power you scrounge up from the environment!
As...
Fixing an E-Waste ASUS P5A-B Socket 7 Mainboard
https://invidious.privacyredirect.com/watch?v=D5rMj8FdfHY
A fun part of retro computing is saving ‘e-waste’ that was headed for certain destruction. These boards can have any number of defects, modifications and more that have to be remedied prior to using them. In the case of the Asus P5A-B Socket 7 mainboard that [Bits und Bolts] rescued from the scrapheap at least one issue was obvious: someone had ripped off the plastic part of the ZIF socket, leaving only the metal pins poking out like an awkward kind of LGA socket.
In addition to the busted PGA ZIF socket there was additional damage, including a broken SMT capacitor...
This Week in Security: The Supply Chain Has Problems
The biggest story of the week is a new massive supply chain breach, which appears to be unrelated to the previous massive supply chain breaches, this time of the Axios HTTP project.
Axios was created as a more developer-friendly Javascript HTTP interface for node.js, giving a promise-based API instead of the basic callback API. (Promise-based programming allows for simpler coding workflows, where a program can wait for a promise to be fulfilled, instead of the developer having to manage the state of every request manually.) Javascript has since provided a modern Fetch API that provides similar functionality, but Axios remains one of...
Build your own Dial-up ISP with a Raspberry Pi
Last year my aunt let me add her original Tangerine iBook G3 clamshell to my collection of old Macs1.
It came with an AirPort card—a $99 add-on Apple made that ushered in the Wi-Fi era. The iBook G3 was the first consumer laptop with built-in Wi-Fi antennas, and by far the cheapest way to get a computer onto an 802.11 wireless network.
DC in the Data Center for a More Efficient Future
If you own a computer that’s not mobile, it’s almost certain that it will receive its power in some form from a mains wall outlet. Whether it’s 230 V at 50 Hz or 120 V at 60 Hz, where once there might have been a transformer and a rectifier there’s now a switch-mode power supply that delivers low voltage DC to your machine. It’s a system that’s efficient and works well on the desktop, but in the data center even its efficiency is starting to be insufficient. IEEE Spectrum has a look at newer data centers that are moving towards...
Chicken Coop Door Performs in Harsh Environment
One of the pitfalls of modern engineering is that it’s entirely possible to end up in a situation where a product or solution has been designed by someone who has never left a desk. Which wouldn’t be a problem if things didn’t have a tendency to work differently in real life than they do in theory.
One of those things is automatic chicken coop doors, which have to operate reliably in not only a wide range of climates but with a number of possible physical limitations as well. [Vinnie] has taken on the challenge of building one which actually accomplishes all...
Radxa Taco Updated for Raspberry Pi CM5 with 5× SATA and RAID Support
Radxa has updated its Taco carrier board with a new revision designed around the Raspberry Pi Compute Module 5, targeting storage-heavy and network-oriented applications. The platform integrates multiple SATA interfaces, dual Ethernet ports, and PCIe expansion in a compact form factor. The V1.61 revision transitions the design to support the Raspberry Pi CM5 exclusively, replacing […]
Addressing the Divisive Topic that is Boiling Water
https://invidious.privacyredirect.com/watch?v=6m0Mql20ujo
The topic of boiling water is apparently a rather divisive topic, with plenty of strong opinions to go around on what is safe and the most efficient way to go about it. Thus in a new video [Cahn] sought to address the many comments that came in after his previous testing of electric kettles on either 12 VDC or 240 VAC.
What’s interesting about this whole topic is that at its core the overall efficiency of boiling water is simply a matter of calculating the energy input minus energy losses, with the remaining energy going into the water.
As we can see...
Pan and Tilt The Weatherproof Way, With Bowden Cables
https://invidious.privacyredirect.com/watch?v=Wm8h4Yy5GxE
Over the years there have been many designs for pan-and-tilt camera mounts suitable for single board computer cameras. Often they mount small servos for the movement, but those in turn present problems when the device finds its way outdoors. [GOAT Industries] is here with a novel solution to this problem, instead of trying to cover up the servos on the mount itself, the whole thing is remotely controlled by linear actuators through Bowden cables.
Testing was performed using Mole-Grips instead of actuators, and revealed a few design quirks. There are hefty springs to provide tension, and since they work against 3D...
Nuvoton NuMicro M3331 Cortex-M33 MCU features built-in ARGB LED controller, optional USB 2.0 OTG interface
Nuvoton’s new NuMicro M3331 is a series of 32-bit Arm Cortex-M33 MCUs clocked at 180 MHz that integrate an ARGB LED controller, a DSP instruction set, a single-precision FPU, and TrustZone security for smart factories, renewable energy systems, and consumer devices. In the past, we have written about other Cortex-M33 MCUs like the STM32U3B5/C5, Texas Instruments MSPM33C321A, Nordic Semi’s nRF54LM20A, and various others, but the Nuvoton M3331 series specifically features a built-in Enhanced LED Light Strip Interface (ELLSI) and up to 10 standard LLSI channels. This allows the MCU to natively support gaming ARGB Gen1 and Gen2 LED control protocols,...