Theater Safety Glasses
Watch horror movies without the fear of having to cover your eyes when things get scary with these ingenious Theater Safety Glasses created by Aisen Caro Chacin in collaboration with Shawn Lauriat.
pulse sensor
Use an Oscilloscope to See Your Pulse
MAKE reader Scott recently built a modified version of the IR Pulse Sensor by Sean Ragan by combining it with elements from the original circuit, as designed by Let’s Make Robots user MarkusB.
