Improvement

A loop is used to slow down the speed control of the steering gear by the official function, so that the steering gear can rotate at the speed you want╰(￣ω￣ｏ)

How to use

jUST RUN TEH ./examples/ Example.py

You need to pay attention to the following sentences:

def Forward_loop_ControlServo(channel, start, end, interval, freq_sleep, end_sleep):
    for _ in FloatRange(start, end, interval):
        set_servo_angle(channel, _)
        time.sleep(freq_sleep)
    time.sleep(end_sleep)


def Reversed_loop_ControlServo(channel, start, end, interval, freq_sleep, end_sleep):
    for _ in reversed(FloatRange(start, end, interval)):
        set_servo_angle(channel, _)
        time.sleep(freq_sleep)
    time.sleep(end_sleep)

Parameter interpretation

- channel: Channel number on board PCA9685  
- start: The angle of the steering gear at the moment
- end: The angle at the end of the steering gear rotation you want
- interval: Sampling frequency from start to end of angular travel
- freq_sleep: Sampling interval
- end_sleep: Operating interval of steering gear in different channels

LIKE THIS:
Forward_loop_ControlServo(0, 90, 5) ---> 0,5,10...90
Reversed_loop_ControlServo(90, 0, 5) --->90,85,80...0

For more details, see example.py

Here is the official installation method

Adafruit Python PCA9685

Python code to use the PCA9685 PWM servo/LED controller with a Raspberry Pi or BeagleBone black.

Installation

To install the library from source (recommended) run the following commands on a Raspberry Pi or other Debian-based OS system:

sudo apt-get install git build-essential python-dev
cd ~
git clone https://github.com/adafruit/Adafruit_Python_PCA9685.git
cd Adafruit_Python_PCA9685
sudo python setup.py install

Alternatively you can install from pip with:

sudo pip install adafruit-pca9685

Note that the pip install method won't install the example code.

FeiMa-REC/PCA9685_LoopControl

Improvement

How to use

Here is the official installation method

Adafruit Python PCA9685

Installation