Cool Lighting for Fre (LED Modules)

About: I like to build some cool stuf

in this instructable i made little LED lights for some nice lightening effects

i used recycled batteries because it was free but you can use whatever battery you want :)

Step 1:

It all started when I went around the container for used batteries and I was wondering how many of them are actually useful

so ask my teacher if I could test them with some school meters in his lab and he agreed

Step 2: First Measuring

inside was lot of rubbish and used lightbulbs

i was impressed some batteries was even new :)

exactly half of them was able to output 100mA and hold their voltage between 1.5-1.1V

(current 100mA was given by variable resistor one LED need only around 20mA)

there was also few rechargeable batteries which was probably used only once (i tested them at home and capacity was pretty close to description on battery )

when i finished my measuring i packed all of useful batteries and return container with remaining bad ones in his place

it seems no one registered half of them is gone :)

Step 3: Second Measuring

after i arrived home i measured batteries once more and i sorted them by their voltage

Step 4: Schematics and Some Info

i used only best batteries with 1.5V for this project rest could be used in some other projects

you can even use worse batteries if you add joule thief but i didn't had that many components for build

all what i used was just two batteries, switch and LED

you can also use battery box with switch and just add LED and batteries

i bought 10pcs on ebay for $5 here

green, white and blue LED could be powered by 3V without ressistor other colors need one

50-100Ω should be enough for other collors (only if you using 3V source)

if you dont know much about electronic you can use this nice page for calculating resistor

i also add picture with LED voltage for each collor

Step 5: Assembly

It took a few pieces until I learned the effective method after that I was working faster and the assembly of 20 lights took les than three hours

Step 6: ​if You Like Satisfying Time Lapses I Have One Especially for You :)

Step 7: Packing and Storing

i added some tape to isolate LED pins (heatshrink tube would be better)

and packed it for future use

Step 8: Magnets

you can use little neodymium magnets to attach lights on metal surfaces

Step 9:

we went shooting mini film to old cold war bunker

here is some footage, as we had some fun on the end



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    6 Discussions


    4 months ago

    Nice job buddy, and hey, the bunker is cool, but even more cool with your lights:) Great place to relax...LOL Or um ghost hunting perhaps??LOL Anyway, nice job!

    1 reply

    Reply 4 months ago

    many thanks
    lightening that bunker was my favorite part of this project :)


    4 months ago

    I like that you used old battery's, the Lights create a nice effect!

    1 reply

    4 months ago

    Wow! This really yielded a nice effect for your photos! You're seriously brave for soldering directly to battery terminals! :P

    1 reply

    Reply 4 months ago

    actually it's not that risky if you have a powerful soldering iron, low melting point solder wire battery will be ok