81 lines
3.9 KiB
Python
81 lines
3.9 KiB
Python
from gpiozero import Button, LED # Import libraries
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from time import sleep
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from signal import pause
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from datetime import datetime, timedelta
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from pathlib import Path
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import pandas as pd
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import schedule
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best_before_exeeded = timedelta(seconds=18) # Define thresholds
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overdue = timedelta(seconds=30)
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consumption_overview = [] # Key variables
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current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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infrared_sensor = Button(2) # GPIO pins of external hardware
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orange_led = LED(4)
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red_led = LED(17)
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def on_a_sensor_signal(): # On a signal: update list, save csv and turn off led (if necessary)
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current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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if len(consumption_overview) == 0 or consumption_overview[-1]['Status'] == 'Yogurt eaten up':
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new_status = "Yogurt open"
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passed_time = "pending"
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consumption_overview.append({'Status':new_status, 'Time':current_time, 'Consumed In':passed_time})
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else:
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new_status = "Yogurt eaten up"
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if len(consumption_overview) > 0 and consumption_overview[-1]['Status'] == 'Yogurt open':
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opening_time_str = consumption_overview[-1]['Time']
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else:
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opening_time_str = current_time
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opening_time = datetime.strptime(opening_time_str, '%Y-%m-%d %H:%M:%S')
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now = datetime.strptime(current_time, '%Y-%m-%d %H:%M:%S')
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time_difference = now - opening_time
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consumption_overview.append({'Status':new_status, 'Time':current_time, 'Consumed In':str(time_difference)})
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print(consumption_overview[-1])
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if len(consumption_overview) > 0 and consumption_overview[-1]['Status'] == 'Yogurt eaten up':
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orange_led.off()
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print("orange led pin 4 turned off")
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red_led.off()
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print("red led pin 17 turned off")
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df = pd.DataFrame(consumption_overview)
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currentDateTime = datetime.now().strftime("%Y%m%d_%H%M%S")
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df.to_csv(f"Raspberry Yogurt_{currentDateTime}.csv", index=False)
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print("CSV file saved")
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def check(): # Runs periodically the led_check as long as a yogurth is open
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schedule.every(6).seconds.do(led_check)
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while not infrared_sensor.is_active and consumption_overview[-1]['Status'] == 'Yogurt open':
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schedule.run_pending()
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def led_check(): # Checks if an led needs to be turend on
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current_time = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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if len(consumption_overview) > 0 and consumption_overview[-1]['Status'] == 'Yogurt open':
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opening_time_str = consumption_overview[-1]['Time']
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else:
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opening_time_str = current_time
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opening_time = datetime.strptime(opening_time_str, '%Y-%m-%d %H:%M:%S')
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now = datetime.strptime(current_time, '%Y-%m-%d %H:%M:%S')
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time_difference = now - opening_time
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print("open since", time_difference)
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if overdue > time_difference >= best_before_exeeded:
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orange_led.on()
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print("ORANGE LED ON", "open since", time_difference)
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elif time_difference >= overdue:
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orange_led.off()
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print("orange led off")
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red_led.on()
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print("RED LED ON", "open since", time_difference)
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while True: # Keeps the program running to listen for sensor events
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infrared_sensor.when_pressed = on_a_sensor_signal
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infrared_sensor.when_released = check
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pause()
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