RGB strip and ULN2003

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on forums here found following scheme:


i have rgb led strip, led type smd5050, 12vdc, 1.5a per 5 meter.
i want control 2.5 meters of strip arduino.

the scheme above shows how connect 12v power source , uln2003 transistor.
but how able mix multiple colors, red(0-255), green(0-255), blue (0-255).

i guess rgb pins of strip need kind of voltage, produce multiple colors instead of mixing red, green , blue.



Arduino Forum > Using Arduino > LEDs and Multiplexing > RGB strip and ULN2003


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