Published September 4, 2020

SafeKeeper

SafeKeeper, an affordable smart safe, through which you can get alerts if someone comes in close contact with the safe.

BeginnerProtip4 hours295

Things used in this project

Hardware components

Bolt IoT Bolt WiFi Module

Arduino UNO

Ultrasonic Sensor - HC-SR04 (Generic)

Jumper wires (generic)

USB-A to B Cable

USB-A to Micro-USB Cable

Software apps and online services

Arduino IDE

Twilio SMS Messaging API

Story

Introduction

Have you ever wondered whether your things are safe at home while you are away? Be it your roommate, your parents or anyone else, you do not want them to meddle with your personal belongings irrespective of their worth.

With SafeKeeper, you can safely-keep your belongings intact while you stay away from home. If anyone comes in close proximity to the safe, it automatically sends a text message to your number, alerting you that someone is approaching your safe.

For the technical aspect of it, I have programmed the Arduino Uno to read the distance through the Ultrasonic Sensor (HC-SR04) and the same is provided to the Bolt Iot Wifi Module. It then checks if the distance is lesser than a specific value, and if it is then it sends a Text message using Twillio to the number provided.

The Circuit diagram along with the snaps are attached.

1 / 3 • Setup

Connections

1. Arduino Uno to Ultrasonic Sensor

5v -> Vcc, Gnd->Gnd, Pin 13-> Echo, Pin 12->Trig

2. Arduino Uno to Bolt Iot Wifi Module

Tx-> Rx, Rx->Tx, Gnd->Gnd

3. Connect Arduino Uno to Laptop (Only while uploading sketch, otherwise can be powered using a battery)

4. Bolt IoT wifi module to power supply.

Procedure

1. Make a Bolt IoT cloud account, obtain your DEVICE_ID and API_KEY. Follow steps in https://docs.boltiot.com/docs/setting-up-the-bolt-wifi-module , and https://cloud.boltiot.com/apiDoc for your reference.

2. Next, set up your Twillio Account, obtain SID and AUTH_TOKEN.

3. Make Connections as mentioned above.

4. Download Arduino IDE, type the code, and verify and upload the sketch onto Arduino Uno.

5. Make the two files smartsafe.py and conf.py using the given code on Vmware (or Ubuntu).

6. Run smartsafe.py file.

7. Now place your hand at about 10 cm from the sensor. You will get an alert on the screen as well as on your phone via text message.

Code

import conf, json, time #For configuration, parsing json and sleep

from boltiot import Bolt, Sms #For sending Sms&Bolt class from boltiot library 

safe_dist= 10  #distance between the intruder and safe
  

mybolt = Bolt(conf.API_KEY, conf.DEVICE_ID) #Create object to fetch data 

sms = Sms(conf.SID, conf.AUTH_TOKEN, conf.TO_NUMBER, conf.FROM_NUMBER) #Create object to send SMS 

response = mybolt.serialRead('13') #Recieving data from the pin 13 of Arduino

while True:
  response = mybolt.serialRead('13') #Fetching the value from pin 13 ofArduino
  data = json.loads(response)#storing the value received to the bolt from arduino
  distance = data['value'].rstrip() #Removing the decimal part
  print("Distance is: ", distance) 
  if (int(distance) <= safe_dist): 
    print("Too close!")
    response = sms.send_sms('Someone is close to your safe!!') #Sending the sms to your mobile number
  time.sleep(2.5) #Time between two consecutive readings in seconds

Credits

Sakshi Kamal

1 project • 1 follower

Contact

Thanks to Eric Simoes.

Comments

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SafeKeeper

Things used in this project

Hardware components

Software apps and online services

Story

Introduction

Connections

Procedure

Schematics

Circuit diagram

SafeKeeper

Code

smartsafe.py

Arduino Sketch

conf.py

Credits

Sakshi Kamal

Comments

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SafeKeeper

SafeKeeper

Things used in this project

Hardware components

Software apps and online services

Story

Introduction

Connections

Procedure

Schematics

Circuit diagram

SafeKeeper

Code

smartsafe.py

Arduino Sketch

conf.py

Credits

Sakshi Kamal

Comments

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