9 Watt 1200 Lm LED BULB




DIY LED bulb with led strips at home with minimal materials and low cost.


Step 1: Materials:

1. smd 3528 led strip white(2.55m)= Rs.150/-
2. led strip adapter 12v 1A DC=Rs.50-80/-
3. An empty deodorant can
4. A dead cfl
5. Epoxy glue=Rs.30/-
6. Scissor
7. Soldering kit
8. Razor blade
9. Enameled cooper wire of 20-30guage from an old transformer
10. Cellophane plastic

Step 2: Step 1:

1) Cut the led strips into small pieces of 10cm
2) Each piece will contain 6 smd leds
3) Number of such pieces required is 52
4) Cut the nozzle of the deodorant can and wash it and dry it.
5) Remove the adhesive cover from the back of the led and paste it to the empty deodrant can as shown in the picture with the resistor side towards the cut out portion of the can.

Step 3: Step 2:

1) Cut the enameled wire into small 2cm pieces
2) Remove the enamel from the copper with a razor blade
3) Solder the copper to the positive and negative points of the led strips such that all are parallel connected
4) Repeat these steps until all the strips are connected.
5) Prepare the epoxy glue and fix the joints firmly on to the can

Step 4: Step 3:

1) Solder the last positive and negative wires to the strip and to the output of the smps.
2) Roll a A4 size paper and insert into to can to provide protection against short circuit of smps
3) Solder the input wires from the smps to the mains point of the cfl cup
4) With the help of epoxy fix the can and the cfl cup
5) Wrap a sheet of cellophane plastic around the led and tape it at the bottom of the can

Step 5: Step 4:

Testing! Testing! Testing! Its brighter than a 15 Watt CFL bulb

Step 6: Some Calculations N Stuff!

Each smd 3528 white led consumes about 0.06watts (Google the datasheet)
Total no. of leds connected for this bulb is 156 and total power is 9.36watts.
The lumen rating for 1 led is 7-9lm therefore 153 leds will generate 1200lm approx.

Its SMPS power supply is so efficient that its output is same even if the mains voltage drops down to 90Volts!!! Believe me or not!!

Enjoy making this bulb at home!

The total cost will be around Rs.300 in India (about US $4 )

Some more bulbs that I made the same way lighting my home.....(Pics. above)



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    11 Discussions

    Timo Repo

    3 years ago

    I have also been experimenting with the LED-strips and old deaf lamps. I was using IP-rated LED-strip (with silicon) and that was a mistake - after 6 months, the silicon was getting dry, cracking and got brown, preventing all light use. Nowadays, I am using LED-strips without silicon.

    The Freak

    4 years ago on Introduction

    I like the use of an empty deodorant can. Next to the fact that it is a good shape it happens to also conduct heat very well since they are usually made out of aluminium. Good thinking!

    1 reply
    SamraatThe Freak

    Reply 4 years ago on Introduction

    yeah for that reason and for recycling waste also(dual purpose).....Save the earth! :D


    4 years ago

    I am curious to know if you have actually measured the lumens? By that I mean did you use a meter or use the estimated lumen value given with the LEDs? Curious because I have a 200 lumen light and you cannot directly look at it!

    3 replies

    Reply 4 years ago

    I don't have any meter but i just used the estimated lumen rating of the led....that is why i said approx......and i even compared my bulb with a 9watt(438lm), 15watt(945lm) as well as 20watt(1056lm) cfl bulb....its brighter than the three...


    Reply 4 years ago

    cool! I still think this is a great ible.


    Reply 4 years ago

    thnx for your valuable comments...i realy appreciate it.


    Reply 4 years ago

    thnx...i appreciate it


    4 years ago on Introduction

    Hey, nice work! That looks super bright. Do you have any specific thing you use this homemade bulb for?

    1 reply

    Reply 4 years ago on Introduction

    just to eliminate the use of cfl and to minimize the power consumption. I replaced all the 5 nos. of 25 watt cfl from my house with these....very efficient and cool