Adafruit PCA9685 PWM Servo Driver Library 
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