AUTOMATIC NIGHT LAMP

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Introduction: AUTOMATIC NIGHT LAMP

About: I am an engineering student who is very passionate about technology. I like to code a lot, build projects and I am very curious of different tech. things and its working. IoT have been one of my favorite top...

Hi ,

In this project i am going to make an automated night lamp model using basic electronic parts which runs on a 9v battery.It works on the lethargy of light falling on the LDR(light dependent resistor).When there is no light the LED will glow at it's maximum and the brightness of LED decreases with the decreasing surrounding luminosity of light.

Step 1: THING YOU'LL NEED

1.BC 507 TRANSISTOR

2.10K POTENTIOMETER

3.9V BATTERY

4.AN LED

5.RELAY

6.1 K RESISTOR

7.LIGHT DEPENDENT RESISTOR

8.SWITCH(OPTIONAL)

Step 2: DESIGNING THE MODEL

The Night lamp circuit model is given above. Here the potentiometer can be adjusted to control the sensitivity of the LDR.

This circuit can be used to make portable table lamp as shown above(USING ALTOIDS)

NB: I used a 3v button cell to light up the LED to fit inside the ALTOIDS

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9 Comments

I can't find BC507 so i used BC547 but it does not work. Any suggestion?

2 replies

In my opinion, both of the transistor will work fine.


Good luck with your project!!

I tried both breadboard and ARES but it is not working. Here is the schematic for my circuit. Do you see any problem? Thanks.

https://i.gyazo.com/ec1cb3dc91d3fff91851fe3364cdea94.png

I WANT TO MAKE AUTOMATIC NIGHT LAMP FOR HOME

SO PLEASE HELP ME TO DESIGN FOR 220V

1 reply

Hi kapil,

I am glad to know that you're gonna make an automated night lamp for home. You can go to this link to find out more about it, I found this useful

Link : http://www.engineersgarage.com/electronic-circuits/automatic-night-lamp

Good Job ;)

You can also put or add LEDs on one of the sides so it can be also as a hand-held torch .

1 reply

Thank you for your comment.

I am happy to know your suggestion :)

I would use a power mosfet instead of a relay, and if you use a relay add a flyback diode