Using A Smartphone As A Touchscreen For Arduino

If you want a good display and interface device for an embedded project, it’s hard to look past an old smartphone. After all, you’ve got an excellent quality screen and capacitive touch…

Arduino VGA, The Old Fashioned Way

Making a microcontroller speak to a VGA monitor has been a consistent project in our sphere for years, doing the job for which an IBM PC of yore required a plug-in ISA card. Couldn’t a microc…

Hear A Vintage Sound Chip Mimic The Real World

Sound chips from back in the day were capable of much more than a few beeps and boops, and [InazumaDenki] proves it in a video recreating recognizable real-world sounds with the AY-3-8910, a chip t…

Artificial Intelligence Runs On Arduino

Fundamentally, an artificial intelligence (AI) is nothing more than a system that takes a series of inputs, makes some prediction, and then outputs that information. Of course, the types of AI in t…

Make Your Own Remy The Rat This Halloween

[Christina Ernst] executed a fantastic idea just in time for Halloween: her very own Remy the rat (from the 2007 film Ratatouille). Just like in the film Remy perches on her head and appears to gui…

An Arduino Triggers A Flash With Sound

To capture an instant on film or sensor with a camera, you usually need a fast shutter. But alternately a flash can be triggered with the scene in the dark and the shutter wide open. It’s thi…

Floorboard Is A Keyboard For Your Feet

Whether you have full use of your hands or not, a foot-operated keyboard is a great addition to any setup. Of course, it has to be a lot more robust than your average finger-operated keyboard, so b…

Adjustable Electric Hand Warmers

It may be the last gasp of summer here in the Northern Hemisphere, but it’s always cold somewhere, whether it’s outdoors or inside. If you suffer from cold, stiff hands, you know how di…

Solar Fountain Aerates Garden Pond

Sometimes off-the-shelf solutions to a problem don’t meet your expectations. That’s what led [TomGoff] to build his own solar pond fountain. This build features a lot of creative reuse …

Getting An Old HVAC System Online

Standardization might sound boring, but it’s really a great underlying strength of modern society. Everyone agreeing on a way that a certain task should be done saves a lot of time, energy, a…

A Throne For LEGO Baron Harkonnen

If you’re both a LEGO and a Dune fan, unless you’ve been living in a cave on Mars with your eyes shut and fingers in your ears, you’re probably aware that LEGO released a set for …

So You Can Tuna Fish

You know what they say. But it’s 2024, after all. Shouldn’t you be able to tune a fish by now? As [ChromaLock] shows us in the video below, it’s absolutely possible, and has been …

Simple Version Of Pong Played On A Row Of LEDs

As far as video games go, Pong is already about as simple as it gets. But if even two dimensions is a bit more than you’re looking to tackle, [mircemk] shows how you can distill the core game…

Undo Arduino Encryption With An Oscilloscope

Cryptography ain’t easy. Seemingly small details like how many times a computationally intensive loop runs can give the game away. [Lord Feistel] gives us a demo of how this could work with n…

A DIY Proximity Sensor, Using Just Scrap Parts And Software

[mircemk] shows how to create a simple non-contact proximity sensor using little more than an Arduino Nano board, and a convenient software library intended to measure the value of capacitors. The …

Hosting Your Own PixMob Party Made Easy

Over the last few years, it’s been increasingly common for concertgoers to be handed a light-up bracelet from PixMob that synchronizes with the others in the crowd to turn the entire audience…

Enjoy Totality Every Day With This Personal Eclipse Generator

There have been a couple of high-profile solar eclipses lately, but like us, you probably missed the news of the one that passed over Munich in 2019. And every day since then, in fact, unless you w…

2024 Business Card Challenge: Go Tic-Tac-Toe-to-Toe With Them

There is perhaps no more important time to have a business card than when you’re in college, especially near the end when you’re applying for internships and such. And it’s vital …

An Arduino Nano Clone In A DIP-Sized Footprint

Nobody doubts the utility of the Arduino Nano and its many clones, and chances are good you’ve got at least one or two of the tiny dev boards within arm’s reach right now. But as small …

Arduino + TFT = Micro Star Chart

We always look at the round LCDs and wonder what to do with them other than, of course, a clock. Well, [shabaz] had a great idea: use it as a star map display. The project combines the Arduino, a r…