Category Archives: misc hacks

Turning A Single Bolt Into A Combination Lock

In our search for big-box convenience, we tend to forget that locksmiths once not only copied keys but also created complex locks and other intricate mechanisms from scratch. [my mechanics] hasn’t forgotten, and building a lock is his way of celebrating of the locksmith’s skill. Building a combination lock from …read more

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Posted in brass, combination lock, lock, lockpicking hacks, locksmithing, misc hacks, steel | Leave a comment

Torturing an Instrumented Dive Watch, for Science

The Internet is a wild and wooly place where people can spout off about anything with impunity. If you sound like you know what you’re talking about and throw around a few bits of the appropriate jargon, chances are good that somebody out there will believe whatever you’re selling.

Case …read more

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Posted in BMP280, clock hacks, crown, depth, dving, ESP-01, misc hacks, pressure, seal, sensor, temperature, watch, water pressure, wifi | Leave a comment

Fourier Explained: [3Blue1Brown] Style!

If you ask most people to explain the Fourier series they will tell you how you can decompose any particular wave into a sum of sine waves. We’ve used that explanation before ourselves, and it is not incorrect. In fact, it is how Fourier first worked out his famous series. …read more

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Posted in fft, Fourier, math, misc hacks | Leave a comment

A Guide to Shop Equipment Nobody Thinks About: Clean, Organized, and Efficient

When planning out a workspace at home, the job, or at a makerspace, we all tend to focus on the fun parts. Where the equipment will go, how you’ll power it, what kind of lights you’ll get, etc, etc. It’s easy to devote all your attention to these high-level concepts, …read more

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Posted in equipment, home lab, misc hacks, organization, safety equipment, storage, tool hacks | Leave a comment

This MDF Sound Bar Sounds Great

Everyone should build a speaker cabinet at least once in their life, if only so they can realize how much thought goes into building a simple box. [John] of ibuildit.ca wanted a sound bar for his home theater setup, and that means building a sound bar. The result is beautiful, …read more

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Posted in mdf, misc hacks, musical hacks, sound bar, soundbar, speaker cabinet, speakers | Leave a comment

AI Recognizes And Locks Out Murder Cats

Anyone with a cat knows that the little purring ball of fluff in your lap is one tiny step away from turning into a bloodthirsty serial killer. Give kitty half a chance and something small and defenseless is going to meet a slow, painful end. And your little killer is …read more

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Posted in ai, artificial intelligence, AWS, cat door, DeepLens, feline, home hacks, machine learning, machine vision, misc hacks, murder, predation, prey | Leave a comment

Trick Shot Bot Flings Balls into Wine Glass Every Time

We’ve heard of beer pong, but we’re not sure we’ve heard of wine pong. And certainly never wine pong automated with a ping pong ball throwing robot like this one.

There’s not a huge amount of detail available in the video below, and no build log per se. But …read more

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Posted in arduino, ballistic, beer pong, misc hacks, momentum, motor, ping pong, release | Leave a comment

Dry Your Boots With The Internet of Things

If you live somewhere cold, where the rain, snow and slush don’t abate for weeks at a time, you’ve probably dealt with wet boots. On top of the obvious discomfort, this can lead to problems with mold and cause blisters during extended wear. For this reason, boot dryers exist. [mark] …read more

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Posted in boot, boots, ESP32, footwear, misc hacks | Leave a comment

Banana Bomb Is Likely To Get You In Trouble

If there’s one thing Hollywood loves, it’s a ticking clock to create drama. Nuclear weapons, terrorist bombs, and all manner of other devices have been seen featuring foreboding numbers counting down on a series of 7-segment displays. In this vein, [deshipu] developed a rather ridiculous take on the classic trope. …read more

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Posted in banana, misc hacks, timer | Leave a comment

Tomorrow Night: HDDG 40, Mechanical And Electronic Ephemera

For the last several years, we’ve hosted a series of meetups for the Bay Area. This week is no different and we’re pleased to announce the fortieth Hardware Developers Didactic Galactic. It’s this Thursday, June 20th, in downtown San Francisco.

The Hardware Developers Didactic Galactic is our monthly IRL meetup, …read more

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Posted in bay area, Bay Area Meetup, HDDG, meetup, misc hacks | Leave a comment