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 ...

Arduino 101 is getting an ... the pi when exposed to bright light. If a photodiode converts light into current, then the next step is pretty easy. A transistor uses the amount of current at ...

According to researchers, the optoelectronic integrated circuit (OEIC) consists of a PIN-photodiode based on an InAlAs/InGaAs heterojunction bipolar transistor structure lattice-matched to an InP ...