In order to help his friend prepare for a talk at DEFCON this weekend, [Craig] built an IR photodiode amplifier circuit. The circuit extended the detection range of the hack from a few inches to ...

For the existing photoelectric smoke detector, an infrared light source and a light-sensing photodiode are placed in opposite ...

Researchers at Aalto University have developed a new type of infrared photodiode that is 35% more responsive at 1.55 µm, the key wavelength for telecommunications, compared to other germanium ...

A group of South Korean researchers has developed an intelligent fire detection technology that drastically reduces the false alarm incidents, which go off in the absence of a real fire, and is on the ...