Hay guys, so my project im currently working on has 6 RGB LEDs, I am going to running them from a PIC. BUT, im using the PWM outputs to drive the RGB channels (Neg) and then i though i would just run the individual LED's from the PIC IO pin. but after thinking about programming and stuff, i decided i would be running all the LED's RGB channels for that LED at the one time. SO the current draw will probably exceed 20ma, which would kill the PIC's IO pin. Normally i would just wack a uln2004 in there to drive the LED's but cant because the LED Channel are Positive. and uln's are NPN.
SO basically the only thing i can think of doing is running the 6 LED's via PNP transistors. but if anyone has a better idea could you let me know..
Thanks.
SO basically the only thing i can think of doing is running the 6 LED's via PNP transistors. but if anyone has a better idea could you let me know..
Thanks.