PCA9685 16-Channel 12-bit PWM/Servo Driver I2C interface

What if you want to make a robot with a lot of moving parts or if you want to control too many LEDs with PWM outputs? PCA9685 is your solution to overcome the limited PWM outputs of a microcontroller which is a 16-Channel 12-Bit PWM/Servo Driver. This module can control 16 free-running PWM outputs with 16-Channel 12-Bit PWM/Servo Driver using only 2 pins. You can even chain up 62 such breakout boards to control up to 992 PWM outputs.
The communication to this module is through I2C and the PWM driver has a built-in clock which means you do not need to send continuous signals from your microcontroller to hold the value.
Module is 5V compliant, which means you can control it from a 3.3V microcontroller and still safely drive up to 6V outputs. This is good when you want to control white or blue LEDs with 3.4+ forward voltages. There are 6 address select pins so you can wire up to 62 of these modules on a single I2C bus which totals to an astounding 992 outputs.

Features

• Adjustable frequency PWM up to about 1.6 KHz
• 12-bit resolution for each output – for servos, that means about 4us resolution at a 60Hz update rate
• Configurable push-pull or an open-drain output
• The output enable pin to quickly disable all the outputs
• Terminal block for power input
• Reverse polarity protection on the terminal block input
• Green power-good LED
• 3 pin connectors in groups of 4 so you can plug in 16 servos at once
• Chainable design
• A spot to place a big capacitor on the V+ line
• 220-ohm series resistors on all the output lines to protect them, and to make driving LEDs trivial
• This board/chip uses I2C 7-bit address between 0x60-0x80, selectable with jumpers

Specifications

• Power input via terminal block or 0.1" spaced pins
• Adjustable frequency PWM up to about 1.6 KHz
• 12-bit resolution for each output which is 4us resolution at 60Hz update rate
• Configurable push-pull or an open-drain output
• Reverse polarity protection on the terminal block input
• 220Ohm output line projection resistors
• Pins on both sides to chail multiple modules

Shipping List

• PCA9685 16-Channel 12-bit PWM/Servo Driver I2C interface x 1