Do-it-yourself simple flashlight from the crown and LED SMD 5730

Hello dear friends! Today, I would like to tell you how to make a simple flashlight based on a crown battery.

And so, from the details we need:
● SMD 5730 LEDs
● Inoperative crown battery
● Cron working battery)

Instruments:
● Soldering iron
● Glue gun.

First you need to pull the "tip" of the old battery, it will serve as the basis of our flashlight.

We remove all unnecessary.

Now we take up the LEDs (they are very small and fragile, be careful when working with them). We need to connect them in series so that at a voltage of 9 volts they do not burn out. When soldering, we observe the polarity.

We solder the LEDs close to each other, after tinning the contacts.

Now we solder the finished design to the base for the flashlight, it is important not to confuse the polarity.

ATTENTION! Do not overdo the soldering iron, otherwise burn the LEDs.

That's it! The basic design is ready. Now we pass along the edges with hot glue, for greater reliability.

Note: LEDs do not overheat, even during prolonged use, since each of them has 3 volts, while the maximum voltage at which a radiator is required is 3.2 ~ 3.4 V.

Specifications:
● Power 1.5 W
● Angle 180˚

Thanks for attention!

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