安装PCA9685的python驱动程序
apt-get install git build-essential python-dev cd ~ git clone https://github.com/adafruit/Adafruit_Python_PCA9685.git cd Adafruit_Python_PCA9685 python setup.py install
pip install adafruit-pca9685
原文：https://www.cnblogs.com/herman1221/p/11846067.html