Introduction: How to Make a Dark Sensor

Picture of How to Make a Dark Sensor

Hello everyone . This is my frist instructable on this site ..This idea came in my mind when i was reading of automatic street light . Here i have show an easy way to make a dark senensor it sence dark and then a light will glow automaticly . It is also helpfull in making of LFR-line following robot. The part are very cheap and can find on a simple electronic store..also

Step 1:

Picture of

1.Battery (3v-4.5v) 2.LDR 3.Transistor (BC547B NPN) 4.LDR 5.LED

Step 2: Circuit

Picture of Circuit

Step 3: Video

here is a vedio by wich you can learn how to make it easily


Nice job!


anuragpandey (author)2014-06-20

Cool project dude really awesome creaton good thinking

eagleanurag (author)anuragpandey2014-06-20


About This Instructable



Bio: My Name is Anurag Pandey. I'm form INDIA .I'm an Engineer and love to make stuff related to Robotics and all Engineering branches ... More »
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