David L. Farquhar on technology old and new, computer security, and more
I got shocked by a neutral wire on an outlet that was shut off at the panel once. That doesn’t make any sense. It’s a rare condition, but it can happen. It shouldn’t happen, but here’s why a neutral wire can shock you.
The huge power outage in Texas in February 2021 got a lot of people thinking about solar. But a question quickly came up in all the conversations I had with people around the country. Do solar panels work during a power outage? That sounds like an absurd question. But under some circumstances, they don’t.
Solar doesn’t always work during a power outage, and that’s something that naysayers used to try to pin the blame on solar power. On-grid solar panels will shut down to protect electrical workers during an outage, but there are ways for you to compensate for that.
Styrene is a chemical derived from petroleum. We most commonly encounter it as a type of plastic. It’s an inexpensive and versatile type of plastic, so it’s been very popular for many decades.
Styrene’s cost effectiveness and relative strength make it a common material in construction and also in the manufacture of consumer goods. With the right prep work and materials, it is easy to glue and paint and repair as well.
Code requires GFCI outlets in areas where water might be present. It’s a safety issue. But how much do GFCI outlets cost? And why are GFCI outlets so expensive relative to regular outlets?
GFCI outlets cost around $16 because they’re more complex than a standard outlet. But you can save money by taking advantage of a GFCI’s ability to protect all outlets downstream of it.
The markup on cables is huge. The markup on premium cables is even bigger. That’s why the cable you need to connect your device to your TV frequently doesn’t come in the box. Making matters worse, it’s hard to know which cable to buy. Are expensive HDMI cables worth it? Are they worth the extra money?
It’s more complicated than it used to be, since an 8K HDMI cable is different and does cost more to make than a 4K HDMI cable. But all other things being equal, there’s no difference in audio and video quality between two cables with the same specs and a different price.
Is AT&T Fiber good? Is AT&T Fiber worth it? As an IT professional who works from home full time and relies on my Internet connection to make a living, I have strong opinions about that. I think it also puts me in a good position to answer those questions.
While AT&T Fiber isn’t perfect, it does have a lot going for it. Depending on what your other choices are, it may be the best option in your area. Here’s how to know.
Is Harbor Freight getting rid of coupons? That’s the rumor, but it’s not what’s happening. At any rate, the rules changed in 2021, so let’s talk about the new rules, and how to coupon Harbor Freight in 2023 and beyond.
The rumor is that Harbor Freight doesn’t do coupons anymore. While they do a lot fewer coupons now than they used to, Harbor Freight does still issue coupons. That means there’s still opportunity for savings.
The Amstrad PC1512 and PC1640 were inexpensive Korean-made PCs that took Europe by storm in the mid 1980s. Amstrad was the UK’s largest computer maker, and it hoped to replicate that success in the United States as well. Here’s an overview of those machines, and why that effort was less than an overwhelming success.
My roundup of Commodore motherboards turned up on a vintage computer discussion board. A minor aside that I mentioned in passing turned into a major topic of discussion. And then the conversation turned in an entirely different direction. What about going with an FPGA solution, rather than vintage hardware? With an FPGA approach you can be certain you’re getting what you want. But what are the drawbacks of FPGA vs retro hardware, if any?
A purist will object to modern FPGA approaches, usually for more than one reason. But there can be practical advantages to an FPGA solution, and it’s also possible to blend it with a more traditional approach.
I built a shiny new server recently. Then I spent three hours trying to migrate my site to it. So it goes. But even after the site mostly worked right, WordPress gave me a critical error on my website every time I tried to save a post. Here’s how I fixed the problem.
The message there has been a critical error on your website, please check your site admin email for instructions can be scary, especially when you check your e-mail and there’s nothing there. I found the WordPress dashboard can help.