News & Articles

Get started learning to build your own electronics by following our FREE online courses below!
Learn More »



Build Like A Pyro!
Find many of the parts used on this site at our favorite online electronics shop
Take Me To The Gadgetory!
Turning PC On with a Knock Using ATtiny45

Posted January 20, 2015 by Chris

"Today’s post is something I’ve prepared for a long time. Hardware-wise it’s a simple thing – ATtiny45 emulating a PS/2 device, sending a key press when three knocks are detected in the attached piezoelectric sensor."

Leave a Reply