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41 lines
1.8 KiB
41 lines
1.8 KiB
# Load libraries
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import RPi.GPIO as GPIO #Import RPi GPIO library
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import time
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from time import localtime, strftime
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import os
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# Set up the GPIO pins
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GPIO.setwarnings(False)
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GPIO.setmode(GPIO.BOARD)
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PIN_TRIG = 40
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PIN_ECHO = 38
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def collect_data():
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GPIO.setup(PIN_TRIG, GPIO.OUT) #Setup the gpio trigger pin as input
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GPIO.setup(PIN_ECHO, GPIO.IN) #Setup the gpio echo pin as output
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time.sleep(0.5) #Wait for 0.5 seconds for sensor to settle
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GPIO.output(PIN_TRIG, GPIO.LOW) #Set trigger to low
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GPIO.output(PIN_TRIG, GPIO.HIGH) #Set trigger to high
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time.sleep(0.00001) #Wait for 0.1 milliseconds before setting to low again
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GPIO.output(PIN_TRIG, GPIO.LOW) #Set trigger to low again
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while GPIO.input(PIN_ECHO)==0:
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pulse_start_time = time.time() #Set the start time of when the waves are emitted by the sensor
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while GPIO.input(PIN_ECHO)==1:
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pulse_end_time = time.time() #Record the time the waves traveled back to the sensor
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pulse_duration = pulse_end_time - pulse_start_time #Calculate how long it took for the round trip of the waves
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distance = round(pulse_duration * 17150, 2) #Convert the time it took to centimeters and round to 2 decimals
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date_time = strftime("%Y-%m-%d %H:%M:%S", localtime())
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if distance <= 80: #Check if the distance is greater than 80cm (This will depend on the garage)
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distance = str(distance)
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message = 'At ' + date_time + ', the garage was opened at a distance of ' + distance + ' centimeters!'
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command = '../telegram-bot-bash/bin/send_broadcast.sh --doit' + ' "' + message + '"' + '> /dev/null'
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os.system(command)
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if __name__ == '__main__':
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while True:
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try:
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collect_data()
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except:
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print("quitting")
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quit()
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time.sleep(5)
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