help with dimming leds

I recently bought an rgb 12v led tape thats about 1 meter long and i want to attach it the bottom of my scooter. What would be the best way to put a dimmer on the leds? Do i need a PWM sort of a thing or can i just use a 100ohms pot?

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Sandisk1duo8 years ago
i'd use this
Kiteman8 years ago
kelseymh8 years ago
LEDs don't "dim" the way incandescent lights dim. They have a threshold voltage -- below that voltage they're off, and above it they're on. As you've indicated, you need a PWM or similar "chopped" power supply, so that the voltage can be raised and lowered fast enough to reduce the total light output, but prevent "flicker". You could build a PWM yourself, based on a 555 timer chip (and use a pot to vary the timing), or you could buy a prepackaged one.
a pot can do if its ok to have jump from 0 to some minimum brightness. just use a high resistance pot - the highr the better
guyfrom7up8 years ago
U could just use a potentiometer, but you have to make sure that the potentiometer can handle the wattage.
shieldliger101 (author)  guyfrom7up8 years ago
how can you check that?
how much current the leds take at full power ?