# Adafruit PCA9685 PWM Servo Driver Library [![Build Status](https://travis-ci.org/adafruit/Adafruit_PWMServoDriver.svg?branch=master)](https://travis-ci.org/adafruit/Adafruit_PWMServoDriver) This is a library for our Adafruit 16-channel PWM & Servo driver, shield or FeatherWing Pick one up today in the adafruit shop! * https://www.adafruit.com/products/815 * https://www.adafruit.com/product/1411 * https://www.adafruit.com/product/2928 These drivers use I2C to communicate, 2 pins are required to interface. Adafruit invests time and resources providing this open source code, please support Adafruit and open-source hardware by purchasing products from Adafruit! Written by Limor Fried/Ladyada for Adafruit Industries. BSD license, check license.txt for more information. All text above must be included in any redistribution ## Compatibility MCU | Tested Works | Doesn't Work | Not Tested | Notes ------------------ | :----------: | :----------: | :---------: | ----- Atmega328 @ 16MHz | X | | | Atmega328 @ 12MHz | X | | | Atmega32u4 @ 16MHz | X | | | Atmega32u4 @ 8MHz | X | | | ESP8266 | X | | | Atmega2560 @ 16MHz | X | | | ATSAM3X8E | X | | | Use SDA1/SCL1 ATSAM21D | X | | | ATtiny85 @ 16MHz | X | | | ATtiny85 @ 8MHz | X | | | Intel Curie @ 32MHz | | | X | STM32F2 | | | X | * ATmega328 @ 16MHz : Arduino UNO, Adafruit Pro Trinket 5V, Adafruit Metro 328, Adafruit Metro Mini * ATmega328 @ 12MHz : Adafruit Pro Trinket 3V * ATmega32u4 @ 16MHz : Arduino Leonardo, Arduino Micro, Arduino Yun, Teensy 2.0 * ATmega32u4 @ 8MHz : Adafruit Flora, Bluefruit Micro * ESP8266 : Adafruit Huzzah * ATmega2560 @ 16MHz : Arduino Mega * ATSAM3X8E : Arduino Due * ATSAM21D : Arduino Zero, M0 Pro * ATtiny85 @ 16MHz : Adafruit Trinket 5V * ATtiny85 @ 8MHz : Adafruit Gemma, Arduino Gemma, Adafruit Trinket 3V