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Shahzaib Nayyar
Student
 · LahorePakistan
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can anyone tell me how to trigger a 12v led using ultrasonic sensor?

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Anas Dalintakam
Electronics engineer,DIY thinkerer,arduino/raspberry pi/particle enthusiast,IoT researcher
 · KozhikodeIndia
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Shahzaib NayyarYou will get some help from this my this blogpost.
http://anasdalintakam.blogspot.com/2016/06/playing-with-hc-sr04-ultrasonic-ranging.html
Replace led/buzzer connection as input to your relay.connect your led as output of relay.And it’s done

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