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led driver for a 30w led i dont want to pay the 30 bucks for one, i need to know how to use it without the driver? Answered

do i need the led driver for a 30w led i dont want to pay the 30 bucks for one, i need to know how to use it without the driver?


heres the led


http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=160418184744

Discussions

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RavingMadStudiosantonbergjr

Answer 8 years ago

As Steve has already mentioned, the formula for calculating resistance is in Step 2 of the Instructable linked above. Good luck!

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antonbergjrRavingMadStudios

Answer 8 years ago

i am having trouble can someone just post a link on ebay of a cheap one from china or somthing thanks?

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steveastrouk

8 years ago

Use a resistor in Raving's link, around 1.22/1.8 or 0.66 Ohms

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antonbergjrsteveastrouk

Answer 8 years ago

i am having trouble can someone just post a link on ebay of a cheap one from china or somthing thanks?

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Fuzzy3D

8 years ago

Do what I did with my 10w, dig through your adapters and find one that'll give you close to those specs right off the bat. Most importantly is not to go too far over the recommended current. And make sure you use a beefy heat sink WITH A FAN!