google_api-servo_move

""" if picture input detects bird with google api, triggers servo movement.  """
import io
import os
import google
# Imports the Google Cloud client library
from google.cloud import vision
from google.cloud.vision import types
#Run following line in script or command line on pi before calling function to authorize API call
#export GOOGLE_APPLICATION_CREDENTIALS = 'PATH' 
import RPi.GPIO as GPIO
import time


# Instantiates a client
client = vision.ImageAnnotatorClient()

# The name of the image file to annotate
file_name = os.path.join(
    os.path.dirname(__file__),
    'bird.jpg')

# Loads the image into memory
with io.open(file_name, 'rb') as image_file:
    content = image_file.read()

image = types.Image(content=content)

# Performs label detection on the image file
response = client.label_detection(image=image)
labels = response.label_annotations



for label in labels:
    #if you want to see al the label descriptions run following line
    #print(label.description)
    
    if 'bird'==str(label.description):
        print('found bird')
            
    GPIO.setmode(GPIO.BOARD)

    GPIO.setup(10, GPIO.OUT)

    p = GPIO.PWM(10, 50)

    p.start(7.5)

    try:
            while True:
                    p.ChangeDutyCycle(7.5)  # turn towards 90 degree
                    time.sleep(1) # sleep 1 second
                    p.ChangeDutyCycle(2.5)  # turn towards 0 degree
                    time.sleep(1) # sleep 1 second
                    p.ChangeDutyCycle(12.5) # turn towards 180 degree
                    time.sleep(1) # sleep 1 second 
    except KeyboardInterrupt:
            p.stop()
        
    GPIO.cleanup()
    break