Adafruit 815 servo pwm driver 16 channel 12 bit adafruit 815 p the adafruit pca9635 pwm servo driver breakout board will drive 16 channels with 12 bit pwm pulse width modulation at up to 1 6khz this versatile board can drive servos or leds or anything else that needs pwm with output voltages up to 6v uses a miserly 2 x i2c pins on the microcontroller and the i2c address selection means you can have up to 62 of these boards for a total of 992 channels adafruit supplies a a href http