问题遇到的现象和发生背景
用树莓派4b搭载pca9685模块控制舵机
运行实例程序时报错
Traceback (most recent call last):
File "/home/pi/Desktop/python files/654-Servo+Motor+Test.py", line 17, in <module>
pwm = Adafruit_PCA9685.PCA9685()
File "/usr/local/lib/python3.7/dist-packages/Adafruit_PCA9685/PCA9685.py", line 75, in __init__
self.set_all_pwm(0, 0)
File "/usr/local/lib/python3.7/dist-packages/Adafruit_PCA9685/PCA9685.py", line 111, in set_all_pwm
self._device.write8(ALL_LED_ON_L, on & 0xFF)
File "/usr/local/lib/python3.7/dist-packages/Adafruit_GPIO/I2C.py", line 114, in write8
self._bus.write_byte_data(self._address, register, value)
File "/usr/local/lib/python3.7/dist-packages/Adafruit_PureIO/smbus.py", line 327, in write_byte_data
self._device.write(data)
TimeoutError: [Errno 110] Connection timed out
这个是报错,随后舵机一点反应都没有
求解答,为什么会连接超时呢