I'm trying to control several RGB leds individually. So far I've been able to control multiple RGB leds using only 3 PWM outputs using NPN transistors as shown here here (pic below).
I would like to control each led individually in order to display different colors in each led. If I used the Arduino Mega, which has 12 PWM pins I could only control 4 different groups of leds using the approach mentioned above. It would be nice to be able to control them using the Arduino Uno or other boards with less PWM pins.
What would be a good solution for this? I've been taking a look to shift registers using ShiftPWM and solutions like the TLC5940 but I haven't got enough experience to tell which way would work better.
I'm trying to control several RGB leds individually. So far I've been able to control multiple RGB leds using only 3 PWM outputs using NPN transistors as shown here (pic below).
I would like to control each led individually in order to display different colors in each led. If I used the Arduino Mega, which has 12 PWM pins I could only control 4 different groups of leds using the approach mentioned above. It would be nice to be able to control them using the Arduino Uno or other boards with less PWM pins.
What would be a good solution for this? I've been taking a look to shift registers using ShiftPWM and solutions like the TLC5940 but I haven't got enough experience to tell which way would work better.
I'm trying to control several RGB leds individually. So far I've been able to control multiple RGB leds using only 3 PWM outputs using NPN transistors as shown here (pic below).
I would like to control each led individually in order to display different colors in each led. If I used the Arduino Mega, which has 12 PWM pins I could only control 4 different groups of leds using the approach mentioned above. It would be nice to be able to control them using the Arduino Uno or other boards with less PWM pins.
What would be a good solution for this? I've been taking a look to shift registers using ShiftPWM and solutions like the TLC5940 but I haven't got enough experience to tell which way would work better.
Individual control of multiple RGB leds
I'm trying to control several RGB leds individually. So far I've been able to control multiple RGB leds using only 3 PWM outputs using NPN transistors as shown here (pic below).
I would like to control each led individually in order to display different colors in each led. If I used the Arduino Mega, which has 12 PWM pins I could only control 4 different groups of leds using the approach mentioned above. It would be nice to be able to control them using the Arduino Uno or other boards with less PWM pins.
What would be a good solution for this? I've been taking a look to shift registers using ShiftPWM and solutions like the TLC5940 but I haven't got enough experience to tell which way would work better.