How do cells know what they should become as the body develops? Biological development depends crucially on spatial patterns: ...

There you are at the surplus store, staring into the bin of faded orange, yellow, red, and black, boxes–a treasure trove of vintage vacuum tubes—dreaming about building a tube amp for your ...

With nearly two decades of retail management and project management experience, Brett Day can simplify complex traditional and Agile project management philosophies and methodologies and can explain ...

A bright yellow PCB, a touchscreen, and an ESP32 inside: the Cheap Yellow Display (CYD) Board is turning a budget curiosity into a maker’s favorite. Every now and then a piece of hardware comes along ...

Fill any room with high-quality sound using the compact, energy-efficient Card Sound audio player. With micro SD storage and I²C/RS-485 control, great music has never been this versatile. Looking for ...

Schematics are identical to what you find on the arduino playground except there is an additional LED. (GREEN on pin 12 and RED on pin 7). Use 220 ohm resistors for each. The LEDs will alternate ...

This is a tool that can create pixel-accurate energy diagrams as ChemDraw objects. After opening the generated ChemDraw file, you can add chemical structures, adjust tags, and do whatever else that ...