Test Capacitor with Multimeter

Whenever we make a homemade circuit, we use what are called through-hole components. Any components with long metal leads is a through-hole component. They are great for soldering to, but it's tough to fit enough through-hole resistors and capacitors into a smartphone. To get ...more

Solar panels are an amazing invention. Catching energy from the Sun before it even enters Earth's food chain, photovoltaics are like an all-natural nuclear power plant. Unfortunately, the constituted parts of a solar panel are rare, valuable, and subject to the coercive forces ...more

In this article, I'll show you how to create a simple yet effective way of scaring off intruders. Of course, there are methods around this approach, but it's great for office pranks and general fun. The project requires a little background knowledge in electronics and circuitr ...more

The Stun-Gun In this article, I'll show you how to make a small, weaponized highlighter. Before I get into how to built this device, let me warn you. This device is harmful! When used, it can cause burns and/or serious muscle spasms. The voltage is potentially deadly! DO NOT ...more

The agents of empire do not always arrive with warning. When you are besieged, surrounded, and infiltrated, imagination is often your best weapon against the oppressors. If all you have at hand is some duct tape and a disposable camera, fear not, you have the makings of a powe ...more

Guitar pedals add character to your playing. However, musicians still say that certain pedals by themselves don’t live up to its promise of a perfect sound. Therefore, instead of replacing your guitar pedals with new and expensive ones, you can modify your pedals using differe ...more

Fireworks are the best part about the Fourth of July and other celebrations, but they can easily cause accidental injuries. It's both safer and more fun to set them off remotely, so we'll hack some standard fireworks with nichrome wire, a relay, and an Arduino to ignite remote ...more

In this article, I'll show you how to build a simplistic circuit to generate negative ions. Negative ions have been known to contribute to fresher air, happier mood, and general health benefits. However, they also look amazing in the dark (check out the photos below, purple pl ...more

I have an absolutely wonderful time making projects and writing articles for all of you mad scientists! Today, I will bring you behind the scenes for a look at the workbench, tools, and software that make the Mad Science World possible. Above is my beautiful workbench! My who ...more

In this article, I'll be covering Triggers and Coils, part two of the series (see part one here). Generally, a simple EMP generator consists of four components; a capacitor, a transformer, a trigger and a coil of copper wire. The transformer component can be varied, but the co ...more

This is the third part of my electromagnetic pulse series (see Part One and Part Two). By now, I've covered the hardware and general concept of electromagnetic pulse generators, but how exactly do they disable electronics? How can an invisible field of energy have such a catas ...more

There are two types of bad USBs out there. One lets you trick the computer into thinking it's a keyboard or other USB device, and the other goes straight over malicious into computer killing territory. Last year, Russian security researcher Dark Purple designed a USB stick th ...more

Hi there, first I'm canadian and my SUV so. I'm a hobbyist doing his best, not a mechanic, I don't take charge of other people's installation issues. Anyway, I decided to buy a SUV some months ago, and it comes without the wiring harness for the trailer and the hitch. I made i ...more

For this project, I decided to rip apart a microwave I found in my neighbor's garbage can to see what was inside. With permission, of course! True story! Video: . The saying goes, "one man's trash is another man's treasure", and with all the parts I found in this abandoned app ...more

What's the first thing you would do once you realized you were lost in, say, a desert? If you're like me, you would immediately pull out your cell phone and start dialing every number. But what if you have no service? What if your battery is dead? If you make this survival so ...more

Since I recently had this problem and fixed it, I might as well share the solution. This is actually REALLY simple to fix but will impact your cards' performance. This tutorial is only tested on Radeon HD 5xxx series. Other cards may vary. It would be appreciated if you would ...more

While everyone was marveling at the latest drama over at Magic Leap involving employees last week, a major rumor listed in one of the reports, related to the company's flagship device, was mostly overlooked. "One current issue with the headset is battery life and charging; th ...more

I obviously do a lot of Steampunk projects, but there are a ton of things out there that I haven't tried yet. So, in an effort to broaden my horizons, I recently taught myself how to use Arduinos, which I plan to incorporate into some of my future Steampunk builds. Since ther ...more