stove.md

Protecting you from leaving the stove burner on

A human can get distracted and forget to turn off a burner. To begin, Enviro is reporting a temperature change greater than 1 degree Celsius in less than 8 minutes. This criteria indicates that a burner may have been left on. In the future, Enviro can improve this criteria based on feedback.

When Enviro determines that a burner has been left on, it sends a text. It uses IFTTT Webhooks along with Pushbullet. You must install the Pushbullet app on your phone to get the text.

Warning

Enviro was not designed to sit beside the burner. It is not waterproof and could be damaged when you cook. I hung my sensor in a plastic bag without ziplocking it so the device will not overheat. This is a temporary solution while I run experiments.

heatAlert.py

This script checks the temperature and determines whether the burner has been left on. In the future, it will learn the best criteria

import time
from datetime import datetime
import csv
import textKitchen_TOO_HOT

dt = datetime.now()
priorTemp = 0.0
with open('enviro.csv') as csvfile:
        sense = csv.reader(csvfile)
        for row in sense:
                rowDT = datetime.strptime(row[11],'%y-%m-%d %H:%M')
                temperature = float(row[8])
                if temperature - priorTemp > 1:

                        diff = dt - rowDT
                        diffMinutes = (diff.days *24*60)+(diff.seconds/60)
                        if diffMinutes < 8:
                                print(diffMinutes)

                                msg = "HEAT ALERT\nTemperature is: "+ \
                                str(round((temperature*9/5)+32))+" F "+ \
                                str(round(temperature))+" C"
                                print(msg)
                                print(rowDT)
                                print(dt)
                                textKitchen_TOO_HOT.textIt(msg)

                priorTemp = temperature

textKitchen_TOO_HOT

This script sends a text. Using IFTTT with Raspberry Pi is a helpful tutorial for setting up Webhooks and Pushbullet

import requests

def textIt(msg):
        '''
        PURPOSE:  Text using IFTTT.com
                  you need your own API KEY
        '''
        try:
                r = requests.post(url="https://maker.ifttt.com/trigger/Kitchen_TOO_HOT/with/key/YOUR KEY HERE", data={"value1": msg})
                print("Text status ", r.status_code, r.reason)
        except:
                print("Text status ", r.status_code, r.reason)

if __name__=="__main__":
        textIt(msg)