If you could spend a couple of bucks on a simple project that might prevent a $2000 repair bill on your vehicle, you'd probably build it, right? That's the idea behind this simple low-pressure alarm f...

A good first step in a project is knowing what you want to do. [Ben Fino] made it clear that his Raspberry Pi Sprinkler control system for his wife’s garden had one goal: keep the plants aliv…

Experimenting with optics can be great fun and educational. Trouble is, a lot of optical components are expensive. And other support paraphernalia such as optical benches, breadboards, and rails add t...

Software defined radios (SDRs) can–in theory–do almost anything you need a radio to do. Voice? Data? Frequency hopping? Trunking? No problem, you just write the correct software, and yo…

The AlphaGo computer has been in the news recently for beating the top Go player in the world in four out of five games. This evolution in computing is a giant leap from the 90s when computers were s...

Performing music in open spaces can be a real challenge. The acoustics of the space can play spoil-sport. Now imagine trying to play an instrument spread out over tens of kilometres. The folks at […

Antweight combat robots are really lightweight. [Carter Hurd] used leftover materials to create a dustpan robot with a chomper (comically made from a Krave cereal box) to hold captured competitors in ...

One of the best ways to teach electronics and programming is with hands-on learning. Get the concepts off the computer screen and out into the real world. Students of all ages have been learning with ...

One challenge to building optical computing devices and some quantum computers is finding a source of single photons. There are a lot of different techniques, but many of them aren't very practical, r...

Do you have loved ones who live far away? Or do you just want an interesting starter ESP8266 project to get your feet wet? If the answer to either of these questions is "yes", we've got just the proje...

Some people like to get high on a Wednesday afternoon. [Kevin Hubbard] of Black Mesa Labs likes to get really high. Even higher than intended: last month, he flew a helium balloon powered by a Rasp…

Everyone goes through a few phases during their exploration of electrons, and nowhere is this more apparent than the choice of soldering iron. The My First Soldering Iron™ is an iron that plugs dir…

The Tile is a small Bluetooth chip, speaker, and enough battery for a year in a keychain format. If you lose your keys in the morning, simply use the app on your phone to find the keychain. If you lo...

For some reason, we seem to really want our robots to walk on two legs like we do. And this despite how much the robots themselves want to be made out of motors, which match up so naturally with wheel...

Not content with fitting a tiny square-wave MIDI synthesizer into a MIDI plug, [Mixtela] went on to cram a similar noisemaker into a USB plug itself.

Besides being physically small, the code is sma...

It’s no secret that it’s difficult to run a hackerspace. Different personalities, different material requirements, and often constrained spaces can require continual negotiation. But if…

For some reason the US News media decided on the AR-15 as the poster child of guns that should not be allowed to be made for, or sold to, the consumer. The words still out on the regulation, but, i…

If there’s a better use for Raspberry Pi Zero than a shuffler for episodes of “The Simpsons”, we haven’t heard about it. Creator [Stephen Coyle] took inspiration from [Will …

[AvE] noticed someone was having trouble with their Nepeploid Shilden Inversker, and after a sinusoidal lambda deplanarization test, noticed the dinglebop wouldn't pass through the grumbo. [AvE] is pr...

People like music, but they are also visual creatures. Perhaps that's why music visualization is such a common project. Usually, you think of music visualization as using LEDs or a computer screen. Ho...