I'm working on a project that needs three (or more) PWM pins to work. But unlike Arduino, the Raspberry PI B+ has just one PWM pin. I've searched for solutions and I found that I can use the WiringPi to emulate PWM using software. Is this the best solution? Anybody has a better one?
The Raspberry Pi B+ has two accessible dedicated hardware PWM channels.
Hardware timed PWM is available on all the accessible GPIO.
See my pigpio library.
Studying the WiringPI library I found that I can easily handle the PWN on any pin:
# GPIO port numbers import wiringpi2 as wiringpi wiringpi.wiringPiSetupGpio() wiringpi.pinMode(25, 0) # sets GPIO 25 to input wiringpi.pinMode(24, 1) # sets GPIO 24 to output wiringpi.pinMode(18, 2) # sets GPIO 18 to PWM mode