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Arduino Uno R3 Based Laser Tripwire Alarm System

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By @Oliemmo

  • 0 Devlogs
  • 0 Total hours

My goal with this project was to create a light based tripwire alarm system to explore the use of phototransistors and flashing LEDS. The circuit detects changes in light when the light aimed at the phototransistor is broken by someone passing through or obstructing it. This causes an LED to flash and (more recently) a buzzer to sound.

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