Category Archives: how-to

E-Book Reader Gets Page Turn Buttons, Is None The Wiser

Most e-book readers don’t have physical page turn buttons. Why? They just don’t. Virtual page turns are accomplished with a tap at a screen edge. Determined to reduce the awkwardness of one-handed use, [Sagar Vaze] modified a Kobo e-reader with two physical page turn buttons as a weekend project.

[Sagar] …read more

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Posted in e-book, e-ink, handhelds hacks, how-to, ir, kobo, multitouch hacks, reader, spoof, touch sensing | Leave a comment

A Baby Named DJ

Some of us are guilty of picking up questionable hardware from garage sales, fleamarkets, and well-meaning relatives. There is a balance between turning down a good investment and hoarding, and if we figure out how to tell the difference you will be the first to know. [Clem Mayer] may start …read more

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Posted in 555, 555 audio, 555 timer, analog audio, analog circuitry, circuit bending, drum machine, how-to, music, musical hacks, synthesizer | Leave a comment

He Comes To Bury Sensors, Not To Praise Them

[Adosia] has some interesting videos about their IoT platform controlling self-watering plant pots. However, the video that really caught our eye was the experience in sealing up sensors that are going to be out in the field. Even if you aren’t using the exact sensors, the techniques are useful.

We …read more

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Posted in heat shrink, how-to, potting, sealant, waterproofing, weatherproofing | Leave a comment

Repurposed Plastic Protects PCBs

An errant wire snipping across the wrong electrical pins spells the release of your magic smoke. Even if you are lucky, stray parts are the root of boundless malfunctions from disruptive to deadly. [TheRainHarvester] shares his trick for covering an Arduino Nano with some scrap plastic most of us have …read more

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Posted in case, cover, hardware, how-to, insulation, plastic, protection, recycle, resistant, reuse | Leave a comment

Hack my House: UL Certification and Turning the lights on with an ESP8266

It’s hard to imagine a smart house without smart lighting. Maybe it’s laziness, but the ability to turn a light on or off without walking over to the switch is a must-have, particularly once the lap is occupied by a sleeping infant. It’s tempting to just stuff a relay in …read more

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Posted in ESP8266, Hackaday Columns, home hacks, how-to, smart home, tasmota | Leave a comment

Blacksmithing For The Uninitiated: Let’s Talk About Anvils

When you grow up with something as the constant backdrop to your life, it’s easy to forget as an adult that not everyone else shares your instinctive knowledge of the subject. My dad is a blacksmith, he’s now retired, but as I was growing up his very active forge was …read more

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Posted in anvil, blacksmith, blacksmithing, Blacksmithing for the Uninitiated, forge, forge work, Hackaday Columns, how-to, metalwork, Skills | Leave a comment

Blacksmithing For The Uninitiated: What is a Forge?

Blacksmiths were the high technologists of fabrication up until the industrial revolution gained momentum. At its core, this is the art and science of making any needed tool or mechanism out of metal. Are you using the correct metal? Is the tool strong where it needs to be? And how …read more

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Posted in blacksmith, blacksmithing, forge, forge work, Hackaday Columns, how-to, metalwork, Original Art, Skills | Leave a comment

Computer Algebra for Electronic Design

Don’t get me wrong. Like most people, there’s nothing I enjoy more than solving a long, involved math problem by hand. But, sometimes, a few pages of algebraic scratches on paper is just a means to an end. I find this especially true during electronic design sessions, be it circuit …read more

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Posted in circuit design, computer algebra, computer hacks, how-to, Maxima, symbolic computation, wxMaxima | Leave a comment

Building A Simple Python API for Internet of Things Gadgets

It’s no secret that I rather enjoy connecting things to the Internet for fun and profit. One of the tricks I’ve learned along the way is to spin up simple APIs that can be used when prototyping a project. It’s easy to do, and simple to understand so I’m happy …read more

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Posted in api, datalogger, Hackaday Columns, how-to, https, IoT, NodeMCU, Original Art, python 3.0, Skills, Tech Hacks | Leave a comment

Spectrometer Is Inexpensive And Capable

We know the effect of passing white light through a prism and seeing the color spectrum that comes out of the other side. It will not be noticeable to the naked eye, but that rainbow does not fully span the range of [Roy G. Biv]. There are narrowly absent colors which blur together, and those missing portions are a fingerprint of the matter the white light is passing through or bouncing off. Those with a keen eye will recognize that we are talking about spectrophotometry which is identifying those fingerprints and determining what is being observed and how much is …read more

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Posted in chemistry hacks, equipment, how-to, lab, laboratory, laboratory equipment, spectrometer, spectrophotometry, UV/Vis | Leave a comment