Picture of Film Canister LED Flashlight
In this Instructable I will show you how to make a flashlight out of an old, 35mm, film canister and some ultra-bright LEDs!
You don't need to spend 10$ on a flashlight that isn't even that bright. For 4$ or less, depending what you have lying around the home, you can make a really bright LED flash light. Its got for camping or just for back yard fun.
This flashlight is easy to make,looks cool and most importantly, effective!
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Step 1: Components

Picture of Components
You aren't going to need many components for this project.

1. 4x Ultra-bright, white LEDs (picture 2)

2. Film canister

3. Push switch

4. 3V coin cell battery

5. some wire (I used telephone wire)

Step 2: Tools

Picture of Tools

1. Wire cutter

2. Wire insulation stripper

3. Soldering Iron

4. Solder

5. Electrical tape

6.Scissors whit pointy edges (or a needle)

7.Something to make a hole for the push switch (I used a drill that fit the diameter of my switch)

Step 3: Lets get started

Picture of Lets get started
OK, you got the parts, you got the tools, lets get started!

Make small holes on the cap of the film canister whit the scissors or the needle, two on every side, so the LED will go trough.

Step 4: Soldering

Picture of Soldering
Cut out 8 pieces of wire(like in picture 1) and strip the insulation on the ends.

The LEDs are connected in parallel, that means that all the negative (shorter) sides are connected together and all the positive (longer) sides are connected together.
Take the wire and solder it on the LEDs. One by one connect two same sides (longer whit longer shorter whit shorter) whit wires and solder them.(picture 2,3,4 and 5)

Don't cut all the end of the LEDs, leave two, one positive (long) and one negative (short) (picture 6)

Test it. Take the 3V coin cell battery and put it on the leads in correct manner. If all is good so far the LEDs should lite up.(picture 7 and 8)

On one lead of the LED solder a longer wire. Strip a bit more of the insulation on the oposite side and bend ti. (picture 9 and 10)
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larry.rivard made it!2 months ago
I made a variation of this. I used a 3X AAA Battery holder I had a spare of. since 3 AAAs outputs 4.5 volts I used some 56 ohm resistors on the negative side of the LEDS. So they were set up in parallel rather than In series. Thanks for the great idea, your film canister flashlight was inspiring.
mommywoman7 months ago
Now this is something I could actually make (I'm a woman). I know how to use a lot of power tools, I've made furniture, but I've never souldered, so I think I'll have my husband actually show me how to do it. I've seen other people do it and it looks pretty easy. I already have everything but the battery. Speaking of batteries, how long will a battery last. I'm thinking I could use this in luminaries.
nice portable led light
what do you mean that all negative (shorter) sides are connected, and positive (longer) sides are connected? you mean i trim the LED ends a certain way?
The legs of the LED'S are already cut short and long some brands you have to look close to see the difference !
Marri812 years ago
This is perfect for my cubs' engineering achievement! They will love this. Thanks so much!
npendleton13 years ago
I'm using this for a cub scout project. Could a salvage an old string of LED Christmas lights?
Krz4 years ago
wow, this is great! Very clever use of the film canister.
I'll change the bright LEDs for red light ones, and it will be a charm for using in the photography dark room. (or maybe just use bright white ones with a film over them)
acosicris4 years ago
good job! I like the simplicity!
comodore (author)  acosicris4 years ago
Thank you!
I would so make this! but my dad won't let me use his soldering iron. =(
comodore (author)  StarkIndustries5 years ago
Well, maybe you can make it with your father...
He can solder all the connections...  :)
NicOmbra5 years ago
 This might make me sound like I don't know where anything is (correctly), but where can you buy a push switch?
comodore (author)  NicOmbra5 years ago
IN your local electronic shop like RadioShack...or some other shop that sells electronic components...
komecake5 years ago
  O__O... I love this website. Seriously. I've been on here like 2 days and I've already made so much stuff that I would have spent SO MUCH money on. This is a great one, thanks.
comodore (author)  komecake5 years ago
Great that you love Instructables and my Instructables!  :D
Having my son make this as a cub scout project... Thanks!
comodore (author)  photogirlmim5 years ago
:D Just knowing that some one is also making these makes my day! Thanks! :)
MADAVEEN5 years ago
i made one out of a pill case...thanx for the idea...
comodore (author)  MADAVEEN5 years ago
Cool! Can you please upload some pics of it! I think everyone would like to see it! :)
can some one tell me what happened to the comments here
reeding6 years ago
good idea but man you cant spell
gamer reeding6 years ago
you either... maybe putting "can't" instead of "cant" would help reinforce your comment.
solo.card gamer6 years ago
(removed by author or community request)
reedz solo.card6 years ago
Why in the world would the "y" be capitlized? How about the "g" at the beggining of the sentence or putting a period at the end?
solo.card reedz6 years ago
(removed by author or community request)
... There should be an 'an' in between "or" and "apostrophe".
God, I hate using proper grammar outside skool :P
The y in you shouldn't be capital since it is a pronoun and not a proper noun or at the beginning of the sentence.
I am a banana!
Well, nobody else was contributing anything productive or relevant... so I thought I'd just chime in as well...
WHO THE HELL SERIOUSLY CARES. THIS ISNT GRAMMAR CLASS OR SOMETHING. And ur not a dam banana. You have a snails knees on your toothbrush so everytime you brush ur teeth u get a DENTAL HYGIENE INTTURUPTION with cottage cheese welded shut inside a tub of icecream that some random guy packaged and wrapped it up inside a lightbulb with legs.
No Nate... THIS is random...
Its all random and doesn't have anything to do with the post. No more random after this.
So, what's the square root of 958473625162 - 95847362516?
95847362516 has the power of 2 then - 95847362516. Sorry about the glitch.
This talk about grammar has 24 posts. How sad
reedz blugyblug6 years ago
*singing* Go and put a banana in your ear
jongscx reedz6 years ago
I AM the Banana King!!!
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