November 10, 2007

IR Detector Circuit
Electronic Hacks

17

Carlos demonstrates how to build a simple IR detector. Looks like it could be done for a dollar or two. “An IR signal is “seen” by a reverse biased IR diode which produced an electrical signal according to the light intensity. This signal is then amplified trough a transistor and used to power an ordinary LED. This means that the LED will light up when the IR diodes receives some

Steam Punk Tesla CD Turbine Skill Saw
Insane Equipment

3

  Here is a creative way to carve your pumpkin next year! Have a look at this Instructable for more details. “Pumpkin carving with the Tesla CD Turbine, Steampunk Edition. New design of the little turbine made from CD’s gets put to the test. Will the barely held on, magnetically-coupled, spinning Skilsaw blade, cut through the tough and messy flesh of the poor, tearful Pumpkin??” Thanks Rick