Category Archives: arduino

Measuring UV-C For About $5

Looking to sterilize something? Give it a good blast of the old UV-C. Ultraviolet radiation in the shortest wavelength band breaks down DNA and RNA, so it’s a great way to kill off any nasties that are lurking. But how much UV-C are you using? [Akiba] at Hackerfarm has come …read more

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Posted in arduino, Arduino Hacks, led hacks, UV-C, Zap | Leave a comment

Automating Hand Sanitizer — If You Can Find Any

We once saw a Romeo and Juliet production where the two families were modern-day mob families with 3-piece suits and pistols. If they made King Richard III set in this week, the famous line might be: “Hand sanitizer, hand sanitizer, my kingdom for hand sanitizer!” Even if you have a …read more

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Posted in arduino, Arduino Hacks, Covid-19, fishing line, hand sanitizer, servo | Leave a comment

Eavesdropping Assistant Disturbs The Sound Of Silence

Unless you happen to be from Finland, this is just an all too familiar situation: you’re stuck in an inescapable situation with this one person who is really more of an acquaintance than a friend, and neither of you knows who should say something in hopes of keeping a conversation …read more

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Posted in arduino, Arduino Hacks, Assistant, dc motor, laser cut, microphone, social interaction | Leave a comment

Handwashing Timer Makes Sure the Suds Stay On Long Enough

“Twinkle, Twinkle, Little Star”? How we wonder why you’d resort to singing a ditty to time your handwashing when you can use your social isolation time to build a touch-free electronic handwash timer that the kids — and you — might actually use.

Over the last few months, pretty much …read more

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Posted in animated, arduino, countdown, handwash, hygiene, led, matric, Medical hacks, neopixel, proximity, timer | Leave a comment

Seven-Segment Shelves Do Double Duty

[Lewis] of [DIY Machines] was always on the lookout for that perfect something to hang above the couch. After spending a lot of time fruitlessly searching, he designed and built this awesome shelving unit with recessed lighting that doubles as a huge 7-segment clock.

The clock part works as you …read more

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Posted in arduino, Arduino Hacks, arduino nano, clock hacks, RGB LED, ws2812b | Leave a comment

Open-Source ARM Development Simplified

The ARM series of processors are an industry standard of sorts for a vast array of applications. Virtually anything requiring good power or heat management, or any embedded system which needs more computing power than an 8-bit microcontroller is a place where an ARM is likely found. While they do …read more

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Posted in arduino, arm, cli, command line, developer, development, education, Microcontrollers, shell, stm32, unix | Leave a comment

This Barometer Looks Mighty Fine, Rain or Shine

Mythological legend has it that Tempestas, the Roman goddess of storms and sudden weather, saved the consul Scipio when his fleet of ships got caught in a storm off of Corsica. In return, she demanded that a temple be dedicated to her.

[SephenDeVos]’ beautiful barometer, dubbed Tempestas II,  demands nothing …read more

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Posted in arduino, Arduino Hacks, barometer, BMP280, PCA9685, weather display | Leave a comment

Z80 Computer Is Both Arduino And Shield

There have been plenty of Z80 computer builds here on Hackaday, but what sets them apart is what you do with them. [Andrew] writes in with his Z80 single-board computer made from scratch, using the Arduino standard headers for its I/O. In turn, since he needed an easy way to …read more

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Posted in arduino, Arduino Hacks, arduino mega, debugger, retro computer, retrocomputing, z80 | Leave a comment

Casual Tetris Comes In At $9

[Michael Pick] calls himself the casual engineer, though we don’t know whether he is referring to his work clothes or his laid back attitude. However, he does like to show quick and easy projects. His latest? A little portable Tetris game for $9 worth of parts. There is an Arduino …read more

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Posted in arduino, Arduino Hacks, game, Games, tetris | Leave a comment

Writing Arduino Libraries, An Expert View

The Arduino IDE has a bit of a split personality. On the one hand, it is a simple environment where you can just pick and choose a few libraries, write a few lines of code, and make lots of interesting things. On the other hand, it is also an ecosystem …read more

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Posted in arduino, Arduino Hacks, Arduino libraries, sparkfun | Leave a comment