DIY LED FLASHLIGHT (SUPER BRIGHT)

watch this FULL VIDEO TUTORIAL for a detailed view of the entire build process.

Step 1: WHY I DECIDED TO MAKE ONE

led flashlights available in the market are either useless or not so cheap.

most of them are non rechargeable but the few rechargeable flashlights also don't have the lithium batteries which give a longer runtime.

Step 2: THAT DAY...

a regular day of my life,

i was thinking what to make today.and suddenly the diffuser of my study lamp(led bulb) fell over me

when i looked up i was amazed by the brightness of those leds.

now i knew what are we gonna be making today

Step 3: WHAT YOU NEED

BATTERIES(LI-ION preferably)

wire

led bulb or led panel or smd leds

diode 1n4007

switch(spst)

2.1mm power plug(any type connector)

container

tools

Step 4: PREPARING THE LEDS

i got my leds from a old led bulb whose circuit was faulty

you can either buy your entire led panel or solder some smd leds

note:these small smd leds are more efficient than a bigger led like a 10w or 100w led

even heating is less in smaller leds

unlike bigger leds these can be directly powered by 3.7v li-ion batteries saving any type of boost up efficiency losses or even making smaller battery packs

Step 5: MAKING HOLES

Mark and create space for the charging connector and the switch using a soldering iron.

Step 6: ELECTRONICS

connect all the components according to the circuit diagram and put them in place

Step 7: CHARGING INDICATOR

1K ohm resistor and 3mm white led connected to the power plug act as the charging indicator.

Step 8: HEATSINK

Instead of using those bulky aluminium heatsinks metal coins did the same job for me and then glue up everything.

Step 9: CHARGING UP

it can be charged with any 5v power supply may it be a powerbank or a 5v usb phone charger.

Step 10: I MADE SEVERAL PROTOTYPES

EACH ONE HAVE MANY UNIQUE FEATURES BUILTIN.

Step 11: OUTDOOR TESTING

TEST RESULTS PROVED OUT TO BE BETTER THAN EXPECTED

my flashlights were wide beam and 180 degree wide angle

but you can add a convex lens to achieve a distant and focused beam.

Step 12: CHECK IT OUT...

instructables account

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