LED color

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raresh_r

New Member

• Feb 11, 2008

• #1

Hi, is there possible to change a LED color ? i want to make the indicators from the dashboard of the car to change color in different speed(blue slow, red fast speed)

 

ronsimpson

Well-Known Member

Most Helpful Member

• Feb 11, 2008

• #2

You can get multi-color LEDs. There are RGB LEDs. They have 3 LEDs inside. You vary the amount of current in each LED to get the right mix of color you want.

 

Hero999

Banned

• Feb 12, 2008

• #3

RGB LEDs are pretty common but if you just want red and blue you can get red/blue bi-colour LEDs or just use an RGB and ignore the green.

https://www.lc-led.com/View/itemNumber/150

 

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raresh_r

New Member

• Feb 12, 2008

• #4

white and red exists ?

 

erosennin

New Member

• Feb 13, 2008

• #5

raresh_r said:

white and red exists ?

Click to expand...

No, red and white are mathematical constructs - just like a pixel... They do not exist.

 

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Dean Huster

Well-Known Member

• Feb 13, 2008

• #6

Back before blue LEDs were even developed, I had students who used to routinely change the color of red LEDs to orange by using them without current-limiting resistors for a prolonged period.

Dean

 

Hero999

Banned

• Feb 15, 2008

• #7

raresh_r said:

white and red exists ?

Click to expand...

Just use an RGB LED which can produce a whole rainbow of colour, including white.