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Explore How To Make A Dark Sensor On A Breadboard [HD] with 299,006 views, 3,891 likes, and 311 comments. Experience the impact of this video content that has captured audience attention.

A 'Dark Sensor' is a device which senses the presence of darkness. It senses the presence of darkness with the help of the LDR. Whenever light is focused on the LDR...the L.E.D will not glow. As soon as you cover the LDR or keep the dark sensor in a dark room without lights...the L.E.D will glow. It can also be called an "Automatic Street Light" Circuit since the L.E.D will come "on" after sunset i.e when it becomes dark and the L.E.D will turn "off" during sunrise because there's light! 💡 Electronic Components Required:- LDR (Light Dependant Resistor), L.E.D (Light Emitting Diode), 100k ohm resistor, 9v battery with battery clip, BC547 Transistor, Breadboard and some wires. First connect all the elements on the breadboard to check if it works and then you can solder it to make it permanent. You can even attach a switch to the "Dark Sensor" to turn it "ON" and "OFF" when required. Steps of construction:- 1.Connect the LDR to the 'base' and 'emitter' of the BC547 transistor. 2.Then connect one end of the 100k ohm resistor from the 'base' of the BC547 transistor and the other end of the 100k ohm resistor to anode (+) side of the L.E.D. 3.The cathode (-) side of the L.E.D will get connected to the 'collector' of the BC547 transistor. 4.The positive (+) side of the battery will get connected to the 100k ohm resistor and anode (+) of the L.E.D while the negative (-) side of the battery will get connected to the 'emitter' of the BC547 transistor and the other end of the LDR. IF YOU DONT UNDERSTAND THIS; MAKE SURE YOU WATCH MY PREVIOUS "DARK SENSOR" VIDEO'S LINK :--- https://youtu.be/5OdyYZEiuVo LINK 2 :--- https://youtu.be/RIi-dW6-4NY LINK 3 :--- https://youtu.be/c0bsQer6KTs How to make a "Light Sensor" on Breadboard :- https://youtu.be/ad3769-DjR0 How to make a "Dark Sensor" on Breadboard :- https://youtu.be/c0bsQer6KTs How to make a "Water Level Indicator" on Breadboard :- https://youtu.be/qWwaH7TaNLU How to make an "Infrared Circuit" on Breadboard :- https://youtu.be/WsHwFg93OTE How to Adjust the Brightness of a L.E.D :- https://youtu.be/go3dLfaaP7M How to Adjust the Volume of a Buzzer :- https://youtu.be/cNidnvfq_2w How to Adjust the Speed of a Fan(DC Motor) :- https://youtu.be/cNidnvfq_2w How to make a "Reed Switch Circuit" on Breadboard :- https://youtu.be/q5Ov1xbW_sQ How to make an "Electronic Dice" on Breadboard :- https://youtu.be/F0O31OUpBz8 How to make a "Touch Sensor" using 555 Timer IC on Breadboard :- https://youtu.be/-9DEAQRmVD8 How to make a "Remote Tester Circuit" on Breadboard :- https://youtu.be/aIgxItg9-jE Touch 'on'/Touch 'off' L.E.D on Breadboard :- https://youtu.be/NDVQu4XV890 How to make a Simple Dark Sensor? :- https://youtu.be/5OdyYZEiuVo How to make an "Electronic Wire Loop Game" on a Breadboard :- https://youtu.be/fHvgdd3hTa0 I have explained the circuit construction on the breadboard. Once you get the circuit right you can solder it to make it permanent. Your "Dark Sensor" is ready. Any queries then please do ask! Thanks for watching. Don't forget to like/subscribe/comment/share. 😊✌

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