For one-off projects or prototyping, it’s not too hard to find a wall wart or power supply to send a few joules of energy from the wall outlet to your circuit. Most of these power supplies use a transformer to step down the voltage to a more usable level and
A differential probe, a device for measuring the voltage between two points in a circuit rather than the voltage between a point and ground, it...
Building circuits on a silicon chip is a bit like a game of Tetris — you have to lay down layer after layer of different...
We aren’t sure what’s coolest about [Richard Testardi’s] Flea-Scope. It costs about $13 plus the cost of making the PCB. It operates at 18 million...
[Thomas Sanladerer] wanted to make 3D prints using carbon fiber and was surprised that it was fairly inexpensive and worked well, although he mentions that...
[Blondihacks] wanted to do powder coating for a model train without a lot of special equipment. She started with an Eastwood kit that runs about...
What do you do when you come across a cheap electric bicycle on Facebook Marketplace from a seller who has a few hundred of the...
If you live somewhere prone to power outages, you might have thought about buying a generator. The problem is that small generators are cheap but...
Distorted guitars were a big part of the rock revolution last century; we try to forget about the roll. As a youth, [David Hilowitz] couldn’t...
When you see the term cold fusion, you probably think about energy generation, but the Cold Metal Fusion Alliance is an industry group all about...