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Arduino pwm output to control 12v led strip? Answered

Hi,
Im trying to figure out how to vary the brightness of an 12v rope light.
i currently have the arduino to control the brightness of an 5v Led via the pwm output and would like to do the same but with an 12v rope light instead of the led.
In theory i should be able to do this via an transistor but is it possible to Dim the 12v rope light using an transistor this way?

Tags:Arduino

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user
hledstore (author)2011-06-16

normally a transistor will help. led strip is available at different level of brightness.

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user
steveastrouk (author)2009-11-02

Should be fine. You won't damage the arduino by trying.

Steve

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user

excellent,
transistor is on order and will give it an go. Fingers crossed :)

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user
Spydamonky (author)lostangel5562011-01-23

So, did it work? If so please let me know what transistor you used!! I'm looking to do the same but with a RGB strip

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user

What kind of rating have you ordered ? What current do the lamps take.

Steve

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usLEDsupply (author)2010-10-23

a transistor will only run a short section of strip
if you have a long section you will have to use a logic level mofset or pwm/ttl amp
http://fritzing.org/projects/arduino-controlled-rgb-led-light-strips/

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