树莓派，Python和室内植物浇水

组件和有用的资源

• Raspberry Pi 3入门套件
• 12V水泵
• 电源12V
• 继电器5V
• 连接电缆
• 鳄鱼接头电缆
• 硅胶管

• 电力如何运作
• 如何使用继电器
• 树莓派继电器电源
• 将12V电源连接到继电器

将继电器连接到Raspberry Pi

将电源连接到继电器

将水泵连接到继电器

编码

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. 您必须输入该行FROM = TO = «YOUR_EMAIL@gmail.com»以及password = «YOUR_PASSWORD»您的Gmail电子邮件地址和密码。
2. 取消注释以下行：
   
   
   •  ＃send_last_watered_email（time_keeper.time_last_watered）
   • ＃schedule.every（）。friday.at（“ 12:00”）。做（send_check_water_level_email）
   • ＃schedule.run_pending（）
3. 您需要转到此处，登录到您的Gmail帐户，然后打开此页面上的开关。否则，当您尝试使用Gmail发送电子邮件时，您会收到一条错误消息。 

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

sudo crontab -e

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

摘要

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