Bald Engineer

Why is choosing a simple AA battery such a daunting selection process? Manufacturers are keen on giving their products different names and brag about the chemical technology that …

T he iconic picture of a homemade case for the Apple I, the computer that changed the world, is a great image for Upverter’s post about… changing the world. While most of today’s …

Researchers at the Polytechnic School of Montreal have figured out a way to turn a battery into a flexible material. Each strand of the “battery” is 0.6V. While exciting, it has …

Tools like National’s (now TI) WebBENCH have allowed engineers to design power supplies without downloading any software for quite some time. Recently I got an account at …

Abstract Mixed Signal Integration has a cool little chip that has 7 built-in bandpass filters. Run an audio signal through it and you have an instant audio spectrum analyzer! This …

Putting music signal into the Analog Input of an Arduino can be pretty boring. That is, unless you use a totally awesome chip like the MSGEQ7. This simple Spectrum Analyzer driven …

When getting started with the Arduino, the shear number of board options can be intimidating. While the variety is a great option, it can be daunting to a new user. Many people are …

Can’t decide which Arduino Board is for you? Have a board you want others to know about? This Google Docs Spreadsheet compares some of the key attributes of various Arduino boards. …

When hooking up switches or buttons to an Arduino I/O pin, sometimes the results might appear completely random. Sometimes it will appear as though there is a delay from when the …

Open Source Hardware (OSH) means not only releasing devices, but all of the documentation associated with them. For some projects, this may include the actual CAD files used to …