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Author Archives: Al Williams

Combined Crypto, Anglo-American Style

Posted on March 7, 2025 by Al Williams

If you think about military crypto machines, you probably think about the infamous Enigma machine. However, as [Christos T.] reminds us, there were many others and, in particular, the production …read more Continue reading Combined Crypto, Anglo-American Style→

Posted in Cryptography, history

Plastic Gear Repair

Posted on March 6, 2025 by Al Williams

We’ve seen several methods of repairing plastic gears. After all, a gear is usually the same all the way around, so it is very tempting to duplicate a good part …read more Continue reading Plastic Gear Repair→

Posted in cast in place, Gear, repair hacks

Ptychography for High Resolution Microscopy

Posted on March 6, 2025 by Al Williams

Nowadays, if you have a microscope, you probably have a camera of some sort attached. [Applied Science] shows how you can add an array of tiny LEDs and some compute …read more Continue reading Ptychography for High Resolution Microscopy→

Posted in digital cameras hacks, led hacks, microscopy, ptychography

Speaking Computers from the 1970s

Posted on March 5, 2025 by Al Williams

Talking computers are nothing these days. But in the old days, a computer that could speak was quite the novelty. Many computers from the 1970s and 1980s used an AY-3-8910 …read more Continue reading Speaking Computers from the 1970s→

Posted in AY-3-8910, general instruments, retrocomputing, speech synthesis

Inexpensive Powder Coating

Posted on March 4, 2025 by Al Williams

[Pete] had a friend who would powder coat metal parts for him, but when he needed 16 metal parts coated, he decided he needed to develop a way to do …read more Continue reading Inexpensive Powder Coating→

Posted in fluid bed, powder coating, tool hacks

Tech in Plain Sight: Shopping Cart Locks

Posted on February 28, 2025 by Al Williams

Shopping carts are surprisingly expensive. Prices range up to about $300 for a cart, which may seem like a lot, but they have to be pretty rugged and are made …read more Continue reading Tech in Plain Sight: Shopping Cart Locks→

Posted in Featured, history, Interest, shopping cart

Linux Fu: USB Everywhere

Posted on February 27, 2025 by Al Williams

It is a common problem: I have a USB device on a computer out in the shop, and I want to use it from the comfort of my office. What …read more Continue reading Linux Fu: USB Everywhere→

Posted in Hackaday Columns, linux, linux hacks, usb, usbip

Tech In Plain Sight: Magsafe, and How To Roll Your Own

Posted on February 25, 2025 by Al Williams

Apple likes magnets. They started out with magnetic laptop chargers and then graduated to a system that magnetically holds the phone, charges it, and can facilitate communication between the phone …read more Continue reading Tech In Plain Sight: Magsafe, and How To Roll Your Own→

Posted in apple, engineering, Featured, iphone hacks, magnetic attachment, magsafe

To Test a (Smart) LED

Posted on February 25, 2025 by Al Williams

Adding LEDs to a project used to be enough to make it cool. But these days, you need arrays of addressable multi-color LEDs, and that typically means WS2812B or something …read more Continue reading To Test a (Smart) LED→

Posted in led hacks, tool hacks

Line Power with No Transformer

Posted on February 24, 2025 by Al Williams

Normally, when you want a low DC voltage from the AC line, you think about using a transformer of some kind. [RCD66] noticed that an AC monitor meter must have …read more Continue reading Line Power with No Transformer→

Posted in AC power, diode, parts, transformer, zener diode

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