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Tag Archives: circuits

Electric Paint Pen With Conductive Ink Could Teach You Basics About Circuits


This is a pen with a special ink that when dry, will conduct electricity. Meaning you can literally draw some basic circuits on a piece of cardboard and they’ll work. Connect them to some resistors, or LEDs or whatever else elements go into a circuit and teach yourself or a young one the fundamentals. The surface resistivity is 55 ?/Sq @ 50 microns, if that has any meaning to you, and you should probably not use it with voltages above 12V. It’ll work on just about any surface except skin, and maybe metal and will set you back all of $12 or $19 for two.

[ Product Page ] VIA [ Technabob ]

Contact Lenses With Circuits, Borg Hive Mind Upgrade To Follow

By Jonathan Kimak

Babak Parviz, an assistant professor of electrical engineering at the University of Washington, has created contact lenses that contain electronic circuits. He’s also going to add microLEDs so that the lenses will be able to display things on them. This would make them one of the tiniest personal displays ever made.

While a prototype has been created it is months away from being powered up. The current ideas for powering it up are via radio waves and miniature antennas attached to the lenses or by using solar cells.

Parviz hopes that his invention will be able to be useful in a variety of ways including computing, gaming and medical applications.

He left off one critical use that these contact lenses would be great for, namely becoming an international super-spy.

[ The Guardian ] VIA [ New Launches ]