"Rollerball Pen Can Draw Circuits"

"If you've ever wanted to learn how to create circuits, it just became a boat-load more accessible. A University of Illinois-based startup has created the Circuit Scribe: a pen so that you can doodle away — and create an electronic circuit into the bargain."

The Circuit Scribe is a little different to the conductive pens and paints already on the market. It uses a biro-style rollerball tip instead of a squeezable tube and nozzle to create fine, accurate, fast-drying lines — without wastage.

"Circuit Scribe was made for project based learning," Electroninks Incorporated wrote. "Kids can build circuits and switches in their notebooks and use those concepts to get creative! You can build a circuit with nothing but a coin battery, paper clip, and LED, or build out complex circuits with multiple components."

Cnet Australia (gifs and video at the link)