Raspberry Pi, Python et arrosage des plantes d'intérieur

Composants et ressources utiles

• Kit de démarrage Raspberry Pi 3
• Pompe à eau, 12V
• Alimentation, 12V
• Relais, 5V
• Câbles de connexion
• Câbles avec connecteurs crocodile
• Tubes en silicone

• Comment fonctionne l'électricité
• Comment utiliser un relais
• Alimentation du relais Raspberry Pi
• Connexion d'une alimentation 12V à un relais

Connectez un relais au Raspberry Pi

Connexion de l'alimentation au relais

Connexion d'une pompe à eau à un relais

Le code

from gpiozero import OutputDevice

class Relay(OutputDevice):
    def __init__(self, pin, active_high):
        super(Relay, self).__init__(pin, active_high)

import datetime

class TimeKeeper:
    def __init__(self, current_time):
        self.current_time = current_time
        self.time_last_watered = None
    
    def set_current_time(self, updated_time):
        self.current_time = updated_time

    def set_time_last_watered(self, updated_time):
        self.time_last_watered = updated_time

    @staticmethod
    def get_current_time():
        now = datetime.datetime.now()
        return now.strftime("%I:%M:%S %p")

from classes import Hardware
from classes import TimeKeeper as TK
import schedule
import smtplib
import time
import ssl

# WATERING_TIME must be in "00:00:00 PM" format
WATERING_TIME = '11:59:50 AM'
SECONDS_TO_WATER = 10
RELAY = Hardware.Relay(12, False)
EMAIL_MESSAGES = {
    'last_watered': {
        'subject': 'Raspberry Pi: Plant Watering Time',
        'message': 'Your plant was last watered at'
    },
    'check_water_level': {
        'subject': 'Raspberry Pi: Check Water Level',
        'message': 'Check your water level!',
    }
}

def send_email(time_last_watered, subject, message):
    port = 465
    smtp_server = "smtp.gmail.com"
    FROM = TO = "YOUR_EMAIL@gmail.com"
    password = "YOUR_PASSWORD"

    complete_message = ''
    if time_last_watered == False:
        complete_message = "Subject: {}\n\n{}".format(subject, message)
    else:
        complete_message = "Subject: {}\n\n{} {}".format(subject, message, time_last_watered)
    
    context = ssl.create_default_context()
    with smtplib.SMTP_SSL(smtp_server, port, context=context) as server:
        server.login(FROM, password)
        server.sendmail(FROM, TO, complete_message)

def send_last_watered_email(time_last_watered):
    message = EMAIL_MESSAGES['last_watered']['message']
    subject = EMAIL_MESSAGES['last_watered']['subject']
    send_email(time_last_watered, subject, message)

def send_check_water_level_email():
    message = EMAIL_MESSAGES['check_water_level']['message']
    subject = EMAIL_MESSAGES['check_water_level']['subject']
    send_email(False, subject, message)

def water_plant(relay, seconds):
    relay.on()
    print("Plant is being watered!")
    time.sleep(seconds)
    print("Watering is finished!")
    relay.off()

def main():
    time_keeper = TK.TimeKeeper(TK.TimeKeeper.get_current_time())
    if(time_keeper.current_time == WATERING_TIME):
        water_plant(RELAY, SECONDS_TO_WATER)
        time_keeper.set_time_last_watered(TK.TimeKeeper.get_current_time())
        print("\nPlant was last watered at {}".format(time_keeper.time_last_watered))
        # send_last_watered_email(time_keeper.time_last_watered)

# schedule.every().friday.at("12:00").do(send_check_water_level_email)

while True:
    # schedule.run_pending()
    time.sleep(1)
    main()

1. Vous devez entrer dans la ligne FROM = TO = «YOUR_EMAIL@gmail.com»et password = «YOUR_PASSWORD»votre adresse e-mail et mot de passe Gmail.
2. Décommentez les lignes suivantes:
   
   
   •  # send_last_watered_email (time_keeper.time_last_watered)
   • # schedule.every (). friday.at ("12:00"). do (send_check_water_level_email)
   • # schedule.run_pending ()
3. Vous devez aller ici , connectez-vous à votre compte Gmail et activez le commutateur sur cette page. Sinon, lorsque vous essayez d'envoyer un e-mail à l'aide de Gmail, vous recevrez un message d'erreur. 

run
├── classes
│ ├── Hardware.py
│ └── TimeKeeper.py
└── water_plant.py

sudo crontab -e

@reboot python3 /home/pi/Desktop/run/water_plant.py

Sommaire

git clone https://github.com/AlanConstantino/rpi-plant-project.git