0

I got an RGB LED, one mass and one for blue, red, green. So I got a list there are only two PWM compatible pins listed. Pin 32(GPIO 12) and pin 33(GPIO 13). But for my RBG LED I need three pins with PWM to dim the single color for mixing new colors. So is there another pin I can use for PWM or can't I dim the RGB LED, but in theory I can dim the RGB LED. PS: I code in python Thanks for your help :)

3
  • You can control the common(ground) with PWM if you are trying to dim all three at the same time. Then use any gpio to turn on/off each color as you need it. But this will not work if you need to change the brightness of just one color
    – Chad G
    Dec 11, 2018 at 19:46
  • I need to dim all three individual is there a third PWM pin I van use Dec 11, 2018 at 19:59
  • I would look for a multi channel pwm board that you can talk to with I2C. Something like this amazon.com/Channel-Driver-interface-PCA9685-arduino-Raspberry/…
    – Chad G
    Dec 11, 2018 at 20:01

1 Answer 1

3

My pigpio provides hardware timed PWM on any of GPIO 0-31.

C, Python, and from the command line (pigs).

No need to waste money on additional hardware.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.