BRAND: Communica

16-Channel 12-BIT PWM Servo Control/ Driver - I2C Interface - PCA9685

16-CH 12-BIT PWM Servo Control/ Driver


Using only two pins, control 16 free-running PWM outputs! You can even chain up 62 breakout board to control up to 992 PWM outputs (which we would really like to see since it would be glorious)


  • IIC interface, PWM driver with a built in clock. That means that, unlike the TLC5940 family, you do not need to continuously send it signal tying up your MCU, its completely free running!
  • Power supply 5V, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs (this is good for when you want to control white or blue LEDs with 3.4+ forward voltages)
  • Chain able design, 6 address select pins, so you can wire up to 62 of these on a single i2c bus, a total of 992 outputs – that’s a lot of servos or LEDs
  • Adjustable frequency PWM up to about 1.6 KHz
  • 12-bit resolution for each output – for servos, that means about 4us resolution at 60Hz update rate
  • Configurable push-pull or open-drain output
  • Output enable pin to quickly disable all the outputs
  • On board 220ohm resistors can drive for LED output


  • PCA9685 chip was wrapped in the middle of the small plate
  • Power input terminals
  • Green power light
  • In four groups of 3 pin connector convenient you an insert 16 servo motor, servo motor plug slightly wider than 0.1 “, so you can put 4 to 0.1 “joint)
  • Input reverse polarity protection in a patch panel cascade design
  • V + online placed a large capacitance (in some cases you will need) peripheral input voltage depends on the 10 largest v1000uf capacitance
  • PWM output line put a 220 ohm resistor to protect them, and can be easily drive LEDs
  • Takes 1000UF 10V 105 ° Cap

Additional Information

Device Control/ Driver
Type 16-CH | 12-BIT | PWM | Servo