How to Make a Automatic Emergency Lamp

by EDISON SCIENCE CORNER

2.4K124

Intro: How to Make a Automatic Emergency Lamp

so in this instructable i am going to show how to make a simple eautomatic emergency lamp

*supersimple

*pocket sized

*rechargerable

*automatic

STEP 1: Watch Video Tutorial

STEP 2: Components

1.LDR

LDR is a variable resistor

The resistance of a ldr decreases with increasing incident light intensity

2.transistors

2n3906,bd139

3.10k resistor

4.3.7 li.ion battery

5.tp4056 li.ion charging module

6.led strip

STEP 3: Circuit Diagram

STEP 4: Breadboard Connections

STEP 5: Connection of Battery and Charging Module

STEP 6: Making the Case

i used mdf to build the case

please watch the video click

4 Comments

RajendraKumarS 4 years ago

Good tried it out but the light keeps glowing all the time!
Tried reducing the 10K resistance but nothing helps me!

EDISON SCIENCE CORNER 4 years ago

check connections ones more
please do extra care about transistor pins

RajendraKumarS 4 years ago

Sure I will do it but took extra care to carefully check the connections and connected it to a power supply!
I tried to reduce the resistance connected to the base and LDR but still it remains glowing once covering the LDR it glows brighter.

NISHANT CHANDNA 5 years ago

That Looks Amazing