Archive for the ‘Hardware Development’ Category
Posted by jpluimers on 2024/05/30
For my link archive as this was a cool idea, but for many their device didn’t last that long:
[Wayback/Archive] ElectricRCAircraftGuy/eRCaGuy_ComputaPranksta_Support: Public support for my “Computa Pranksta” mouse jiggler device I sell on Amazon and elsewhere.
This device is a mouse jiggler. It keeps your computer awake. It can also be used to have some fun with your friends (please don’t take it too far–it’s meant to be used in good, friendly gest–not for any type of malicious purposes).
Notes:
Links on those USB Mouse Jigglers below, but first some links on the Computa Pranksta:
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Posted in Development, Hardware, Hardware Development, Hardware Interfacing, IoT Internet of Things, Keyboards and Keyboard Shortcuts, KVM keyboard/video/mouse, Power User, Software Development, USB | Leave a Comment »
Posted by jpluimers on 2023/10/02
[Wayback/Archive] Raspberry Pi And The Story Of SD Card Corruption | Hackaday is long and worth reading.
For me the most important bits are how to prevent SD card wear:
- use good quality power supplies
- put write-heavy operations to SSD
- if it suits your use-case, use OverlayFS
The first is always a good idea. It is the primary reason all our electronics live behind a UPS:
In addition, I posted my personal experience (Samsung microSD cards last way longer than SanDisk cards) on Twitter:
[Wayback/Archive] @hackaday I’m have been running a few Raspberry Pi systems with 8-32Gb micro-SD cards as web-dashboard with refreshes every few minutes or so: much write access. When using Sandisk (no matter the type) they last about a year, Samsung (no matter the type) cards last multiple years.
Via: [Wayback/Archive] hackaday on Twitter: “Raspberry Pi And The Story Of SD Card Corruption https://t.co/R8KNVmQORD” / Twitter
EMP
We had a lightning strike in the evening on 20181111 some 50 meters from our home.
It killed immediately killed this (some pictures further below):
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Posted in *nix, Debian, Development, Hardware Development, Linux, Power User, Raspberry Pi, Raspbian | Leave a Comment »
Posted by jpluimers on 2023/07/19
For my link archive: [Wayback/Archive] APC SmartUPS Battery Float Voltage Calibration
It is my understanding that older BackUPS units could be adjusted with a potentiometer on the board. Calibration of newer models, and the SmartUPS line is factory set in the unit’s micro-controller. APC is of no assistance with units that are out of warranty. I’ve recently found information of how to recalibrate the battery float voltage through reprogramming the battery gain, and some information about modifying the UPS hardware, described below. I can’t take credit for discovering methods demonstrated, but hope it will be useful to another to have a coherent description.
Via:
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Posted in APC Smart-UPS, Development, Hardware Development, Power User, UPS | Leave a Comment »
Posted by jpluimers on 2023/07/06
Some links on the unexpected turn of events after [Archive] Jeff Geerling (@geerlingguy) / Twitter posted
First his site got more traffic because of the post, then within an hour traffic exploded because of a DDoS overflowing both his Raspberry Pi cluster and his mobile data capacity.
Jeff will likely do blog posts on these and update the underlying GitHub repository at [Wayback/Archive] geerlingguy/turing-pi-2-cluster: Turing Pi 2 Cluster , but until then (since his Tweets were not threaded), this is what happened on 20220209 as it taught me a few bits:
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Posted in Cloud, Cloudflare, Containers, Development, Docker, Hardware Development, Infrastructure, Internet, Kubernetes (k8n), LifeHacker, OpenSpeedTest, Power User, Raspberry Pi, SpeedTest | Leave a Comment »
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