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Intruder or Burglar Alarm circuit using Infra Red (IR)
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How To Catch a Thief with a Security Trail Camera
WebMar 7, 2024 · Area reflective sensors emit infrared rays from an LED and use the reflection of those rays to measure the distance to the person or object, allowing for detection when the subject moves within the … WebNov 3, 2024 · An Infrared light-emitting diode (IR LED) is a special-purpose LED that emits infrared rays ranging from 700 nm to 1 mm wavelength. … WebApr 7, 2015 · 1. Hm, since you want to drive the LED at 80 mA and you want to saturate Q1, R1=1kOhm is too high. I arrive at R1 = (2.6 V - 0.9 V) / 0.008 A = 212.5 Ohm. Note that an ATmega328p output pin drops voltage with higher current, thus I'm using 2.6 V instead of 3.3 V (cf. datasheet). prince of risk